Subdomain Finder Examples · Example 1 of 2 in Lookups

Every Subdomain of a Domain

GEThttps://api.deepinfo.com/v1/discovery/subdomain-finder

Every known subdomain of deepinfo.com: 11 records, the domain itself included.

Param: domain
Value: deepinfo.com

Asks for the subdomains of deepinfo.com.

The API found 11 records: deepinfo.com itself (type: 1) and its subdomains (type: 2), such as calendar.deepinfo.com and api.deepinfo.com. All 11 fit on one page of 100.

In the response, look at result_count, results[].punycode and results[].type.

Request

curl

curl 'https://api.deepinfo.com/v1/discovery/subdomain-finder?domain=deepinfo.com' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json'

Python

import requests

url = "https://api.deepinfo.com/v1/discovery/subdomain-finder"

params = {
    "domain": "deepinfo.com"
}

headers = {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
}

response = requests.get(url, params=params, headers=headers)
response.raise_for_status()
print(response.json())

JavaScript

const url = "https://api.deepinfo.com/v1/discovery/subdomain-finder?domain=deepinfo.com";

const response = await fetch(url, {
  method: "GET",
  headers: {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
  },
});

const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("GET", "https://api.deepinfo.com/v1/discovery/subdomain-finder?domain=deepinfo.com", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "YOUR_API_KEY")
	req.Header.Set("Accept", "application/json")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	body, err := io.ReadAll(res.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(body))
}

Java

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.deepinfo.com/v1/discovery/subdomain-finder?domain=deepinfo.com"))
            .header("apikey", "YOUR_API_KEY")
            .header("Accept", "application/json")
            .GET()
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}

using System;
using System.Net.Http;

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Get, "https://api.deepinfo.com/v1/discovery/subdomain-finder?domain=deepinfo.com");
request.Headers.Add("apikey", "YOUR_API_KEY");
request.Headers.Add("Accept", "application/json");

using var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());

PHP

<?php

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL => 'https://api.deepinfo.com/v1/discovery/subdomain-finder?domain=deepinfo.com',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'apikey: YOUR_API_KEY',
        'Accept: application/json',
    ],
]);

$response = curl_exec($curl);

if ($response === false) {
    throw new RuntimeException(curl_error($curl));
}

echo $response . PHP_EOL;

Ruby

require 'net/http'
require 'uri'

uri = URI('https://api.deepinfo.com/v1/discovery/subdomain-finder?domain=deepinfo.com')

request = Net::HTTP::Get.new(uri)
request['apikey'] = 'YOUR_API_KEY'
request['Accept'] = 'application/json'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == 'https') do |http|
  http.request(request)
end

puts response.body

Response

200 OK · application/json

Shortened for this page: results: 3 of 11 shown

Response Body

{
  "page": 1,
  "page_size": 100,
  "result_count": 11,
  "results": [
    {
      "punycode": "calendar.deepinfo.com",
      "unicode": "calendar.deepinfo.com",
      "is_idn": false,
      "subdomain": {
        "punycode": "calendar",
        "unicode": "calendar",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 8
      },
      "subdomain_last": {
        "punycode": "calendar",
        "unicode": "calendar",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 8
      },
      "subdomain_root": {
        "punycode": "calendar",
        "unicode": "calendar",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 8
      },
      "name": {
        "punycode": "calendar.deepinfo",
        "unicode": "calendar.deepinfo",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 16,
        "lang": "en",
        "keywords": [
          "calendar",
          "deep",
          "info"
        ],
        "keyword_count": 3,
        "latinized": [],
        "contains_confusable": false
      },
      "domain": {
        "punycode": "deepinfo.com",
        "unicode": "deepinfo.com",
        "is_idn": false,
        "name": {
          "punycode": "deepinfo",
          "unicode": "deepinfo",
          "is_idn": false,
          "contains_letter": true,
          "contains_number": false,
          "contains_hyphen": false,
          "length": 8,
          "lang": "en",
          "keywords": [
            "deep",
            "info"
          ],
          "keyword_count": 2
        },
        "extension": {
          "punycode": "com",
          "unicode": "com",
          "is_idn": false
        },
        "extension_root": {
          "punycode": "com",
          "unicode": "com",
          "is_idn": false
        },
        "extension_sub": null,
        "extension_type": 1,
        "reserved": null,
        "premium": null,
        "registered": true,
        "whois": {
          "create_date": "2001-06-05T02:57:08Z",
          "update_date": "2025-08-19T07:33:45Z",
          "expiry_date": "2028-10-20T11:59:59Z",
          "registrar": "godaddy online services cayman islands ltd.",
          "registrant": {
            "name": null,
            "organization": null,
            "street": null,
            "city": null,
            "state": null,
            "postal_code": null,
            "country": null,
            "phone": null,
            "email": null
          },
          "name_servers": [
            "may.ns.cloudflare.com",
            "simon.ns.cloudflare.com"
          ],
          "domain_status": [
            "clientdeleteprohibited",
            "clientrenewprohibited",
            "clienttransferprohibited",
            "clientupdateprohibited"
          ],
          "whois_server": "whois.uniregistrar.com",
          "check_date": "2026-08-12T13:01:51Z"
        },
        "whois_normalized": {
          "registrant": null
        },
        "whois_last_check_date": "2026-08-12T13:01:51Z",
        "whois_create_date_historical": null,
        "whois_last_change_date": "2026-08-12T09:44:55Z",
        "whois_registrant_email_historical": null,
        "whois_privacy_enabled": null,
        "dns": {
          "a": {
            "update_date": "2026-08-09T03:36:51Z",
            "ip_addresses": [
              "104.26.10.21",
              "104.26.11.21",
              "172.67.70.198"
            ]
          }
        },
        "dns_last_change_date": "2026-07-21T18:18:11Z",
        "ip_history": null,
        "ssl": {
          "validity": {
            "start_date": "2026-06-03T16:27:33Z",
            "end_date": "2026-09-01T17:27:27Z"
          },
          "serial_number": "61855234530828088905432121166750302202",
          "check_date": "2026-08-12T13:12:32Z"
        },
        "ssl_last_change_date": "2026-08-07T12:22:59Z"
      },
      "type": 2,
      "subdomain_level_count": 1,
      "dns": {
        "a": {
          "update_date": "2026-06-12T20:04:45Z",
          "ip_addresses": [
            "104.26.10.21",
            "104.26.11.21",
            "172.67.70.198"
          ]
        },
        "aaaa": {
          "update_date": "2026-06-12T20:04:45Z",
          "ip_addresses": [
            "2606:4700:20::681a:a15",
            "2606:4700:20::681a:b15",
            "2606:4700:20::ac43:46c6"
          ]
        },
        "ns": {
          "update_date": "2026-06-12T20:04:45Z",
          "name_servers": []
        },
        "mx": {
          "update_date": "2026-06-12T20:04:45Z",
          "mail_servers": []
        },
        "soa": {
          "update_date": "2026-06-12T20:04:45Z",
          "mnames": [],
          "rnames": [],
          "rname_emails": []
        },
        "txt": {
          "update_date": "2026-06-12T20:04:45Z",
          "values": []
        },
        "cname": {
          "update_date": "2026-06-12T20:04:45Z",
          "values": []
        },
        "others": [
          {
            "update_date": "2024-07-02T08:04:32Z",
            "values": [
              "\"RFC8482\" \"\""
            ],
            "type": "HINFO"
          },
          {
            "update_date": "2024-07-02T08:04:32Z",
            "values": [],
            "type": "DNSKEY"
          },
          {
            "update_date": "2024-07-02T08:04:32Z",
            "values": [],
            "type": "DS"
          },
          {
            "update_date": "2024-07-02T08:04:32Z",
            "values": [],
            "type": "SPF"
          }
        ]
      },
      "dns_last_change_date": "2023-08-18T18:11:59Z",
      "ip_history": [
        "104.26.10.21",
        "104.26.11.21",
        "172.67.70.198"
      ],
      "ssl": {
        "tags": [
          "dla"
        ],
        "fqdns": [
          "deepinfo.com"
        ],
        "version": 3,
        "serial_number": "294025305291592463081728235283740205912",
        "fingerprint": {
          "sha256": "89270a8f0514627a26928712e92cbefbb5d3f66e18df0bc5a12ed8e772c883d9",
          "sha1": "a9fcc445c4ef545eaf05decca222218d44c8fbab",
          "md5": "d8cd8dd958879cecfeae74a98b5f1fc6"
        },
        "validity": {
          "start_date": "2026-06-24T13:16:53Z",
          "end_date": "2026-09-22T14:16:46Z",
          "length": 7779593
        },
        "signature": {
          "is_self_signed": false,
          "is_valid": true,
          "value": "MEYCIQD06Pz/4SU0MdI3RzKvdIUC97ZbjInQoJGFm2ig/qe2ggIhAJSMV0hV6c7Kdh6nW9vjPwJ3uj73Ksxd3rISFj/HwzJK",
          "algorithm": {
            "oid": "1.2.840.10045.4.3.2",
            "name": "sha256"
          }
        },
        "issuer_dn": "CN=WE1,O=Google Trust Services,C=US",
        "issuer": {
          "common_name": "WE1",
          "country": "US",
          "state": null,
          "locality": null,
          "organization": "Google Trust Services",
          "organizational_unit": null
        },
        "subject_dn": "CN=deepinfo.com",
        "subject": {
          "common_name": "deepinfo.com",
          "country": null,
          "state": null,
          "locality": null,
          "organization": null,
          "organizational_unit": null
        },
        "extensions": {
          "authority_key_id": "kHeSNWfE/6jMqeZ72YB5e8yT+Tg=",
          "basic_constraints": {
            "is_ca": false
          },
          "certificate_policies": [
            "2.23.140.1.2.1"
          ],
          "extended_key_usage": {
            "client_auth": null,
            "server_auth": true
          },
          "key_usage": {
            "digital_signature": true,
            "content_commitment": false,
            "key_agreement": false,
            "data_encipherment": false,
            "key_encipherment": false,
            "key_cert_sign": false,
            "crl_sign": false
          },
          "signed_certificate_timestamps": [
            "2026-06-24T14:16:53Z"
          ],
          "subject_alt_name": {
            "dns_names": [
              "deepinfo.com",
              "*.deepinfo.com"
            ]
          },
          "subject_key_id": "GfpnN8kRfVS0wFz4YbkEUkS/wEw="
        },
        "check_date": "2026-08-12T12:08:51Z"
      },
      "ssl_last_change_date": "2026-08-09T04:21:13Z",
      "webdata": {
        "connection_status": "success",
        "html": {
          "source_code_hash": "3aba827ce5e3a78ac0eeb14d9df86799554d802d228255551b18af8f6fd631ba"
        },
        "http": {
          "status_code_first": 301,
          "status_code_last": 200,
          "redirection_history": [
            {
              "url": "http://calendar.deepinfo.com/",
              "status_code": 301
            },
            {
              "url": "https://calendar.deepinfo.com/",
              "status_code": 302
            },
            {
              "url": "https://www.google.com/calendar/hosted/deepinfo.com",
              "status_code": 302
            },
            {
              "url": "https://calendar.google.com/calendar/hosted/deepinfo.com",
              "status_code": 302
            },
            {
              "url": "https://calendar.google.com/calendar/a/deepinfo.com",
              "status_code": 302
            },
            {
              "url": "https://www.google.com/a/deepinfo.com/ServiceLogin?service=cl&continue=https://calendar.google.com/calendar/&followup=https://calendar.google.com/calendar/&osid=1&passive=1209600",
              "status_code": 200
            }
          ],
          "external_redirection": true,
          "final_url": "https://www.google.com/a/deepinfo.com/ServiceLogin?service=cl&continue=https://calendar.google.com/calendar/&followup=https://calendar.google.com/calendar/&osid=1&passive=1209600",
          "final_fqdn": "www.google.com",
          "final_domain": "google.com",
          "headers": {
            "others": [
              {
                "name": "pragma",
                "value": "no-cache"
              },
              {
                "name": "expires",
                "value": "Mon, 01-Jan-1990 00:00:00 GMT"
              },
              {
                "name": "date",
                "value": "Mon, 27 Apr 2026 23:41:20 GMT"
              },
              {
                "name": "transfer_encoding",
                "value": "chunked"
              }
            ],
            "access_control_allow_headers": null,
            "access_control_allow_methods": null,
            "access_control_allow_origin": null,
            "cache_control": "no-cache, no-store",
            "clear_site_data": null,
            "content_encoding": "gzip",
            "content_security_policy": "script-src 'unsafe-inline' https: http:;object-src 'none';base-uri 'self';report-uri /cspreport",
            "content_type": "text/html; charset=UTF-8",
            "cross_origin_embedder_policy": null,
            "cross_origin_opener_policy": null,
            "cross_origin_resource_policy": null,
            "expect_ct": null,
            "feature_policy": null,
            "last_modified": null,
            "permission_policy": null,
            "referrer_policy": null,
            "server": "GSE",
            "set_cookie": null,
            "strict_transport_security": null,
            "x_content_type_options": "nosniff",
            "x_download_options": null,
            "x_frame_options": "DENY",
            "x_permitted_cross_domain_policies": null,
            "x_powered_by": null,
            "x_xss_protection": "1; mode=block"
          },
          "cookies": []
        }
      }
    },
    {
      "punycode": "deepinfo.com",
      "unicode": "deepinfo.com",
      "is_idn": false,
      "subdomain": null,
      "subdomain_last": null,
      "subdomain_root": null,
      "name": {
        "punycode": "deepinfo",
        "unicode": "deepinfo",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 8,
        "lang": "en",
        "keywords": [
          "deep",
          "info"
        ],
        "keyword_count": 2,
        "latinized": [],
        "contains_confusable": false
      },
      "domain": {
        "punycode": "deepinfo.com",
        "unicode": "deepinfo.com",
        "is_idn": false,
        "name": {
          "punycode": "deepinfo",
          "unicode": "deepinfo",
          "is_idn": false,
          "contains_letter": true,
          "contains_number": false,
          "contains_hyphen": false,
          "length": 8,
          "lang": "en",
          "keywords": [
            "deep",
            "info"
          ],
          "keyword_count": 2
        },
        "extension": {
          "punycode": "com",
          "unicode": "com",
          "is_idn": false
        },
        "extension_root": {
          "punycode": "com",
          "unicode": "com",
          "is_idn": false
        },
        "extension_sub": null,
        "extension_type": 1,
        "reserved": null,
        "premium": null,
        "registered": true,
        "whois": {
          "create_date": "2001-06-05T02:57:08Z",
          "update_date": "2025-08-19T07:33:45Z",
          "expiry_date": "2028-10-20T11:59:59Z",
          "registrar": "godaddy online services cayman islands ltd.",
          "registrant": {
            "name": null,
            "organization": null,
            "street": null,
            "city": null,
            "state": null,
            "postal_code": null,
            "country": null,
            "phone": null,
            "email": null
          },
          "name_servers": [
            "may.ns.cloudflare.com",
            "simon.ns.cloudflare.com"
          ],
          "domain_status": [
            "clientdeleteprohibited",
            "clientrenewprohibited",
            "clienttransferprohibited",
            "clientupdateprohibited"
          ],
          "whois_server": "whois.uniregistrar.com",
          "check_date": "2026-09-24T07:43:52Z"
        },
        "whois_normalized": {
          "registrant": null
        },
        "whois_last_check_date": "2026-09-24T07:43:52Z",
        "whois_create_date_historical": [
          "2001-06-05T02:57:08Z"
        ],
        "whois_last_change_date": "2026-09-23T19:13:29Z",
        "whois_registrant_email_historical": [
          "user@privacy-link.com",
          "https://uniregistry.com/whois/contact/deepinfo.com?landerid=whois",
          "select contact domain holder link at https://www.godaddy.com/whois/results.aspx?domain=deepinfo.com",
          "user@domainsbyproxy.com",
          "https://www.godaddy.com/whois/results.aspx?domain=deepinfo.com&action=contactdomainowner"
        ],
        "whois_privacy_enabled": null,
        "dns": {
          "a": {
            "update_date": "2026-09-23T14:57:10Z",
            "ip_addresses": [
              "104.26.10.21",
              "104.26.11.21",
              "172.67.70.198"
            ]
          }
        },
        "dns_last_change_date": "2026-09-18T05:41:49Z",
        "ip_history": [
          "104.21.29.10",
          "172.67.171.60",
          "104.26.10.21",
          "104.26.11.21",
          "172.67.70.198"
        ],
        "ssl": {
          "validity": {
            "start_date": "2026-08-22T16:13:55Z",
            "end_date": "2026-11-20T17:13:40Z"
          },
          "serial_number": "175099252490783179325599447426535789523",
          "check_date": "2026-09-24T07:48:15Z"
        },
        "ssl_last_change_date": "2026-09-18T15:26:10Z"
      },
      "type": 1,
      "subdomain_level_count": 0,
      "dns": {
        "a": {
          "update_date": "2026-09-23T14:57:10Z",
          "ip_addresses": [
            "104.26.10.21",
            "104.26.11.21",
            "172.67.70.198"
          ]
        },
        "aaaa": {
          "update_date": "2026-09-18T05:41:26Z",
          "ip_addresses": [
            "2606:4700:20::681a:a15",
            "2606:4700:20::681a:b15",
            "2606:4700:20::ac43:46c6"
          ]
        },
        "ns": {
          "update_date": "2026-09-23T07:50:35Z",
          "name_servers": [
            "may.ns.cloudflare.com",
            "simon.ns.cloudflare.com"
          ]
        },
        "mx": {
          "update_date": "2026-09-23T14:57:10Z",
          "mail_servers": [
            "aspmx.l.google.com",
            "alt1.aspmx.l.google.com",
            "alt2.aspmx.l.google.com",
            "alt3.aspmx.l.google.com",
            "alt4.aspmx.l.google.com"
          ]
        },
        "soa": {
          "update_date": "2026-09-18T05:41:26Z",
          "mnames": [
            "may.ns.cloudflare.com"
          ],
          "rnames": [
            "dns.cloudflare.com"
          ],
          "rname_emails": [
            "user@cloudflare.com"
          ]
        },
        "txt": {
          "update_date": "2026-09-23T07:50:35Z",
          "values": [
            "\"07136fe7fd10489e6e5aaecb042dd586.deepinfo.com\"",
            "\"MS=5060612A08C2271BA7172D83CAC0DFB7646605E1\"",
            "\"atlassian-domain-verification=qAThkYEbPZxmRAXdz196YzVLEJxRagOzEAnVLbhUTtRGxyffJcFya4M4rW/Hwl0D\"",
            "\"google-site-verification=EEDz3JvEB7rlbReuBEnQe27ctNNhov-_NwjtbQns3cg\"",
            "\"google-site-verification=yruvnCFw5vKluiIoVnufYBNZ-C0HEXArbQN-x14wjmQ\"",
            "\"v=spf1 include:_spf.google.com ~all\""
          ]
        },
        "cname": {
          "update_date": "2026-09-23T07:50:35Z",
          "values": []
        },
        "others": [
          {
            "update_date": "2022-06-07T10:23:01Z",
            "values": [],
            "type": "PTR"
          },
          {
            "update_date": "2024-09-03T08:00:50Z",
            "values": [],
            "type": "SPF"
          },
          {
            "update_date": "2024-09-03T08:00:50Z",
            "values": [
              "\"RFC8482\" \"\""
            ],
            "type": "HINFO"
          },
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            "update_date": "2024-09-03T08:00:50Z",
            "values": [],
            "type": "DNSKEY"
          },
          {
            "update_date": "2024-09-03T08:00:50Z",
            "values": [],
            "type": "DS"
          }
        ]
      },
      "dns_last_change_date": "2026-09-18T05:41:47Z",
      "ip_history": [
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        "172.67.171.60",
        "104.26.10.21",
        "104.26.11.21",
        "172.67.70.198"
      ],
      "ssl": {
        "tags": [
          "dla"
        ],
        "fqdns": [
          "deepinfo.com"
        ],
        "version": 3,
        "serial_number": "175099252490783179325599447426535789523",
        "fingerprint": {
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          "sha1": "5102c880b9f106836e519b298180d61b676159c8",
          "md5": "d168f284acc2bd12ef0942ca7b8437ce"
        },
        "validity": {
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          "end_date": "2026-11-20T17:13:40Z",
          "length": 7779585
        },
        "signature": {
          "is_self_signed": false,
          "is_valid": true,
          "value": "MEQCIBNf/tDQrmobCrlLn6qx00hK9xB2VIsUv0js2QhljzehAiAK9Wa5vq0T/Nvr+MrtthEr/AY+sHMi+vIKZEgArZAAUg==",
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            "name": "sha256"
          }
        },
        "issuer_dn": "CN=WE1,O=Google Trust Services,C=US",
        "issuer": {
          "common_name": "WE1",
          "country": "US",
          "state": null,
          "locality": null,
          "organization": "Google Trust Services",
          "organizational_unit": null
        },
        "subject_dn": "CN=deepinfo.com",
        "subject": {
          "common_name": "deepinfo.com",
          "country": null,
          "state": null,
          "locality": null,
          "organization": null,
          "organizational_unit": null
        },
        "extensions": {
          "authority_key_id": "kHeSNWfE/6jMqeZ72YB5e8yT+Tg=",
          "basic_constraints": {
            "is_ca": false
          },
          "certificate_policies": [
            "2.23.140.1.2.1"
          ],
          "extended_key_usage": {
            "client_auth": null,
            "server_auth": true
          },
          "key_usage": {
            "digital_signature": true,
            "content_commitment": false,
            "key_agreement": false,
            "data_encipherment": false,
            "key_encipherment": false,
            "key_cert_sign": false,
            "crl_sign": false
          },
          "signed_certificate_timestamps": [
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          ],
          "subject_alt_name": {
            "dns_names": [
              "deepinfo.com",
              "*.deepinfo.com"
            ]
          },
          "subject_key_id": "p0cCg0usJcT4dOaSGZXGwJBtEBw="
        },
        "check_date": "2026-09-24T07:48:15Z"
      },
      "ssl_last_change_date": "2026-09-18T15:26:10Z",
      "webdata": {
        "connection_status": "success",
        "html": {
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          "status_code_last": 200,
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              "url": "http://deepinfo.com/",
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            },
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            }
          ],
          "external_redirection": false,
          "final_url": "https://www.deepinfo.com/",
          "final_fqdn": "www.deepinfo.com",
          "final_domain": "deepinfo.com",
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              {
                "name": "date",
                "value": "Mon, 21 Sep 2026 09:30:45 GMT"
              },
              {
                "name": "transfer_encoding",
                "value": "chunked"
              },
              {
                "name": "connection",
                "value": "keep-alive"
              },
              {
                "name": "report_to",
                "value": "{\"group\":\"cf-nel\",\"max_age\":604800,\"endpoints\":[{\"url\":\"https://a.nel.cloudflare.com/report/v4?s=3d%2BSJTDmAkeVs5SqxNNJ1A9XXQAYC%2FPaJzI4%2BlERCUEHTUr40DA6FqA8vE6%2FQb6AGVXt0Z%2FuMzemvtuJqq1JJrbnPMTpTFKtgDoRR%2Fz9ZF6m3MHoiZaliA4fFXkZ4Z2ft1%2B3\"}]}"
              },
              {
                "name": "nel",
                "value": "{\"report_to\":\"cf-nel\",\"success_fraction\":0.0,\"max_age\":604800}"
              },
              {
                "name": "link",
                "value": "<https://fonts.googleapis.com>; rel=\"preconnect\""
              },
              {
                "name": "permissions_policy",
                "value": "camera=(), microphone=(), geolocation=(), payment=(), interest-cohort=()"
              },
              {
                "name": "vary",
                "value": "accept-encoding"
              },
              {
                "name": "cf_cache_status",
                "value": "DYNAMIC"
              },
              {
                "name": "cf_ray",
                "value": "a3e80d942d2ff32d-ORD"
              }
            ],
            "access_control_allow_headers": null,
            "access_control_allow_methods": null,
            "access_control_allow_origin": "*",
            "cache_control": "public, max-age=0, must-revalidate",
            "clear_site_data": null,
            "content_encoding": "gzip",
            "content_security_policy": "default-src 'self'; script-src 'self' https://cdn.jsdelivr.net https://static.cloudflareinsights.com https://widget.intercom.io https://*.intercomcdn.com 'unsafe-inline'; style-src 'self' https://fonts.googleapis.com https://*.intercomcdn.com 'unsafe-inline'; font-src 'self' https://fonts.gstatic.com https://*.intercomcdn.com; img-src 'self' data: https:; connect-src 'self' https://static.cloudflareinsights.com https://*.intercom.io wss://*.intercom.io https://*.intercomcdn.com; frame-ancestors 'none'",
            "content_type": "text/html; charset=utf-8",
            "cross_origin_embedder_policy": null,
            "cross_origin_opener_policy": null,
            "cross_origin_resource_policy": null,
            "expect_ct": null,
            "feature_policy": null,
            "last_modified": null,
            "permission_policy": null,
            "referrer_policy": "strict-origin-when-cross-origin",
            "server": "cloudflare",
            "set_cookie": null,
            "strict_transport_security": "max-age=31536000; includeSubDomains; preload",
            "x_content_type_options": "nosniff",
            "x_download_options": null,
            "x_frame_options": "DENY",
            "x_permitted_cross_domain_policies": null,
            "x_powered_by": null,
            "x_xss_protection": null
          },
          "cookies": []
        }
      }
    },
    {
      "punycode": "api.deepinfo.com",
      "unicode": "api.deepinfo.com",
      "is_idn": false,
      "subdomain": {
        "punycode": "api",
        "unicode": "api",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "subdomain_last": {
        "punycode": "api",
        "unicode": "api",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "subdomain_root": {
        "punycode": "api",
        "unicode": "api",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "name": {
        "punycode": "api.deepinfo",
        "unicode": "api.deepinfo",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 11,
        "lang": "en",
        "keywords": [
          "api",
          "deep",
          "info"
        ],
        "keyword_count": 3,
        "latinized": [],
        "contains_confusable": false
      },
      "domain": {
        "punycode": "deepinfo.com",
        "unicode": "deepinfo.com",
        "is_idn": false,
        "name": {
          "punycode": "deepinfo",
          "unicode": "deepinfo",
          "is_idn": false,
          "contains_letter": true,
          "contains_number": false,
          "contains_hyphen": false,
          "length": 8,
          "lang": "en",
          "keywords": [
            "deep",
            "info"
          ],
          "keyword_count": 2
        },
        "extension": {
          "punycode": "com",
          "unicode": "com",
          "is_idn": false
        },
        "extension_root": {
          "punycode": "com",
          "unicode": "com",
          "is_idn": false
        },
        "extension_sub": null,
        "extension_type": 1,
        "reserved": null,
        "premium": null,
        "registered": true,
        "whois": {
          "create_date": "2001-06-05T02:57:08Z",
          "update_date": "2025-08-19T07:33:45Z",
          "expiry_date": "2028-10-20T11:59:59Z",
          "registrar": "godaddy online services cayman islands ltd.",
          "registrant": {
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            "organization": null,
            "street": null,
            "city": null,
            "state": null,
            "postal_code": null,
            "country": null,
            "phone": null,
            "email": null
          },
          "name_servers": [
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            "simon.ns.cloudflare.com"
          ],
          "domain_status": [
            "clientdeleteprohibited",
            "clientrenewprohibited",
            "clienttransferprohibited",
            "clientupdateprohibited"
          ],
          "whois_server": "whois.uniregistrar.com",
          "check_date": "2026-08-12T21:25:04Z"
        },
        "whois_normalized": {
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        },
        "whois_last_check_date": "2026-08-12T21:25:04Z",
        "whois_create_date_historical": null,
        "whois_last_change_date": "2026-08-12T21:27:22Z",
        "whois_registrant_email_historical": null,
        "whois_privacy_enabled": null,
        "dns": {
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            "update_date": "2026-08-09T03:36:51Z",
            "ip_addresses": [
              "104.26.10.21",
              "104.26.11.21",
              "172.67.70.198"
            ]
          }
        },
        "dns_last_change_date": "2026-07-21T18:18:11Z",
        "ip_history": null,
        "ssl": {
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            "start_date": "2026-06-03T16:27:33Z",
            "end_date": "2026-09-01T17:27:27Z"
          },
          "serial_number": "61855234530828088905432121166750302202",
          "check_date": "2026-08-12T21:49:35Z"
        },
        "ssl_last_change_date": "2026-08-07T12:22:59Z"
      },
      "type": 2,
      "subdomain_level_count": 1,
      "dns": {
        "a": {
          "update_date": "2026-08-06T10:36:39Z",
          "ip_addresses": [
            "104.26.10.21",
            "104.26.11.21",
            "172.67.70.198"
          ]
        },
        "aaaa": {
          "update_date": "2026-08-06T10:36:39Z",
          "ip_addresses": [
            "2606:4700:20::681a:a15",
            "2606:4700:20::681a:b15",
            "2606:4700:20::ac43:46c6"
          ]
        },
        "ns": {
          "update_date": "2026-08-06T10:36:39Z",
          "name_servers": []
        },
        "mx": {
          "update_date": "2026-08-06T10:36:39Z",
          "mail_servers": []
        },
        "soa": {
          "update_date": "2026-08-06T10:36:39Z",
          "mnames": [],
          "rnames": [],
          "rname_emails": []
        },
        "txt": {
          "update_date": "2026-08-06T10:36:39Z",
          "values": []
        },
        "cname": {
          "update_date": "2026-08-06T10:36:39Z",
          "values": []
        },
        "others": [
          {
            "update_date": "2024-07-02T08:04:56Z",
            "values": [
              "\"RFC8482\" \"\""
            ],
            "type": "HINFO"
          },
          {
            "update_date": "2024-07-02T08:04:56Z",
            "values": [],
            "type": "DNSKEY"
          },
          {
            "update_date": "2024-07-02T08:04:56Z",
            "values": [],
            "type": "DS"
          },
          {
            "update_date": "2024-07-02T08:04:56Z",
            "values": [],
            "type": "SPF"
          }
        ]
      },
      "dns_last_change_date": "2024-02-16T08:07:07Z",
      "ip_history": [
        "104.26.10.21",
        "104.26.11.21",
        "172.67.70.198"
      ],
      "ssl": {
        "tags": [
          "dla"
        ],
        "fqdns": [
          "deepinfo.com"
        ],
        "version": 3,
        "serial_number": "294025305291592463081728235283740205912",
        "fingerprint": {
          "sha256": "89270a8f0514627a26928712e92cbefbb5d3f66e18df0bc5a12ed8e772c883d9",
          "sha1": "a9fcc445c4ef545eaf05decca222218d44c8fbab",
          "md5": "d8cd8dd958879cecfeae74a98b5f1fc6"
        },
        "validity": {
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          "end_date": "2026-09-22T14:16:46Z",
          "length": 7779593
        },
        "signature": {
          "is_self_signed": false,
          "is_valid": true,
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            "name": "sha256"
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        "issuer_dn": "CN=WE1,O=Google Trust Services,C=US",
        "issuer": {
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          "country": "US",
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          "locality": null,
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          "organizational_unit": null
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        "extensions": {
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          "basic_constraints": {
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          },
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          ],
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            "server_auth": true
          },
          "key_usage": {
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            "content_commitment": false,
            "key_agreement": false,
            "data_encipherment": false,
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            "key_cert_sign": false,
            "crl_sign": false
          },
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          ],
          "subject_alt_name": {
            "dns_names": [
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              "*.deepinfo.com"
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          },
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        "check_date": "2026-08-12T12:08:51Z"
      },
      "ssl_last_change_date": "2026-08-12T06:41:32Z",
      "webdata": {
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        "html": {
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              "url": "https://api.deepinfo.com/",
              "status_code": 520
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          ],
          "external_redirection": false,
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          "final_fqdn": "api.deepinfo.com",
          "final_domain": "deepinfo.com",
          "headers": {
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              {
                "name": "date",
                "value": "Sat, 14 Feb 2026 09:12:12 GMT"
              },
              {
                "name": "content_length",
                "value": "7347"
              },
              {
                "name": "connection",
                "value": "keep-alive"
              },
              {
                "name": "expires",
                "value": "Thu, 01 Jan 1970 00:00:01 GMT"
              },
              {
                "name": "cf_ray",
                "value": "9cdb7145cd4a0010-ORD"
              }
            ],
            "access_control_allow_headers": null,
            "access_control_allow_methods": null,
            "access_control_allow_origin": null,
            "cache_control": "private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0",
            "clear_site_data": null,
            "content_encoding": null,
            "content_security_policy": null,
            "content_type": "text/html; charset=UTF-8",
            "cross_origin_embedder_policy": null,
            "cross_origin_opener_policy": null,
            "cross_origin_resource_policy": null,
            "expect_ct": null,
            "feature_policy": null,
            "last_modified": null,
            "permission_policy": null,
            "referrer_policy": "same-origin",
            "server": "cloudflare",
            "set_cookie": null,
            "strict_transport_security": null,
            "x_content_type_options": null,
            "x_download_options": null,
            "x_frame_options": "SAMEORIGIN",
            "x_permitted_cross_domain_policies": null,
            "x_powered_by": null,
            "x_xss_protection": null
          },
          "cookies": []
        }
      }
    }
  ]
}

Content-Type: application/json
ratelimit-limit: 1
ratelimit-remaining: 0
ratelimit-reset: 1
x-ratelimit-limit-second: 1
x-ratelimit-remaining-second: 0
deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a

Request

What this example sends. Every parameter is documented on Subdomain Finder; the exact request is in the code panel.

Parameter	Value
`domain`query	`deepinfo.com`

Reference updated September 24, 2026

Request

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