Domain Search Examples · Example 19 of 24 in Filters › WHOIS

Registrant E-mail Host

POSThttps://api.deepinfo.com/v1/discovery/domain-search

Field: domain.whois_normalized.registrant.email_fqdn_apex
Operator: eq

Matches records whose domain.whois_normalized.registrant.email_fqdn_apex equals withheldforprivacy.com.

The registrable domain of the host in the registrant e-mail address.

In the response, look at results[].domain.whois_normalized.registrant.email_fqdn_apex.

Request

curl

curl -X POST 'https://api.deepinfo.com/v1/discovery/domain-search?page_size=25' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
  "filters": {
    "must": [
      {
        "name": "domain.whois_normalized.registrant.email_fqdn_apex",
        "type": "eq",
        "value": "withheldforprivacy.com"
      }
    ]
  }
}'

Python

import requests

url = "https://api.deepinfo.com/v1/discovery/domain-search"

params = {
    "page_size": "25"
}

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

payload = {
    "filters": {
        "must": [
            {
                "name": "domain.whois_normalized.registrant.email_fqdn_apex",
                "type": "eq",
                "value": "withheldforprivacy.com"
            }
        ]
    }
}

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

JavaScript

const url = "https://api.deepinfo.com/v1/discovery/domain-search?page_size=25";

const response = await fetch(url, {
  method: "POST",
  headers: {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    filters: {
      must: [
        {
          name: "domain.whois_normalized.registrant.email_fqdn_apex",
          type: "eq",
          value: "withheldforprivacy.com"
        }
      ]
    }
  }),
});

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

package main

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

func main() {
	payload := strings.NewReader(`{
  "filters": {
    "must": [
      {
        "name": "domain.whois_normalized.registrant.email_fqdn_apex",
        "type": "eq",
        "value": "withheldforprivacy.com"
      }
    ]
  }
}`)

	req, err := http.NewRequest("POST", "https://api.deepinfo.com/v1/discovery/domain-search?page_size=25", payload)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "YOUR_API_KEY")
	req.Header.Set("Accept", "application/json")
	req.Header.Set("Content-Type", "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 {
        String body = """
            {
              "filters": {
                "must": [
                  {
                    "name": "domain.whois_normalized.registrant.email_fqdn_apex",
                    "type": "eq",
                    "value": "withheldforprivacy.com"
                  }
                ]
              }
            }""";

        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.deepinfo.com/v1/discovery/domain-search?page_size=25"))
            .header("apikey", "YOUR_API_KEY")
            .header("Accept", "application/json")
            .header("Content-Type", "application/json")
            .POST(HttpRequest.BodyPublishers.ofString(body))
            .build();

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

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

using System;
using System.Net.Http;
using System.Text;

using var client = new HttpClient();

var body = """
    {
      "filters": {
        "must": [
          {
            "name": "domain.whois_normalized.registrant.email_fqdn_apex",
            "type": "eq",
            "value": "withheldforprivacy.com"
          }
        ]
      }
    }
    """;

var request = new HttpRequestMessage(HttpMethod.Post, "https://api.deepinfo.com/v1/discovery/domain-search?page_size=25");
request.Headers.Add("apikey", "YOUR_API_KEY");
request.Headers.Add("Accept", "application/json");
request.Content = new StringContent(body, Encoding.UTF8, "application/json");

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

PHP

<?php

$body = <<<'JSON'
{
  "filters": {
    "must": [
      {
        "name": "domain.whois_normalized.registrant.email_fqdn_apex",
        "type": "eq",
        "value": "withheldforprivacy.com"
      }
    ]
  }
}
JSON;

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL => 'https://api.deepinfo.com/v1/discovery/domain-search?page_size=25',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => [
        'apikey: YOUR_API_KEY',
        'Accept: application/json',
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS => $body,
]);

$response = curl_exec($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/domain-search?page_size=25')

request = Net::HTTP::Post.new(uri)
request['apikey'] = 'YOUR_API_KEY'
request['Accept'] = 'application/json'
request['Content-Type'] = 'application/json'
request.body = <<~'JSON'.chomp
  {
    "filters": {
      "must": [
        {
          "name": "domain.whois_normalized.registrant.email_fqdn_apex",
          "type": "eq",
          "value": "withheldforprivacy.com"
        }
      ]
    }
  }
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 25 shown; results[].name.keywords: first 10 items

Response Body

{
  "page": 1,
  "page_size": 25,
  "result_count": 48100000,
  "results": [
    {
      "punycode": "www.sahalfund.com",
      "unicode": "www.sahalfund.com",
      "is_idn": false,
      "subdomain": {
        "punycode": "www",
        "unicode": "www",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "subdomain_last": {
        "punycode": "www",
        "unicode": "www",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "subdomain_root": {
        "punycode": "www",
        "unicode": "www",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "name": {
        "punycode": "www.sahalfund",
        "unicode": "www.sahalfund",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 12,
        "lang": "cs",
        "keywords": [
          "www",
          "sahal",
          "fund"
        ],
        "keyword_count": 3,
        "latinized": [],
        "contains_confusable": false
      },
      "domain": {
        "punycode": "sahalfund.com",
        "unicode": "sahalfund.com",
        "is_idn": false,
        "name": {
          "punycode": "sahalfund",
          "unicode": "sahalfund",
          "is_idn": false,
          "contains_letter": true,
          "contains_number": false,
          "contains_hyphen": false,
          "length": 9,
          "lang": "en",
          "keywords": [
            "sahal",
            "fund"
          ],
          "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": "2026-09-07T14:43:39Z",
          "update_date": "2026-09-07T14:43:43Z",
          "expiry_date": "2027-09-07T14:43:39Z",
          "registrar": "namecheap, inc.",
          "registrant": {
            "name": "redacted for privacy",
            "organization": "privacy service provided by withheld for privacy ehf",
            "street": "kalkofnsvegur 2",
            "city": "reykjavik",
            "state": "capital region",
            "postal_code": "101",
            "country": "is",
            "phone": "+354.4212434",
            "email": "user@withheldforprivacy.com"
          },
          "name_servers": [
            "dns1.registrar-servers.com",
            "dns2.registrar-servers.com"
          ],
          "domain_status": [
            "clienttransferprohibited"
          ],
          "whois_server": "whois.namecheap.com",
          "check_date": "2026-09-08T09:06:34Z"
        },
        "whois_normalized": {
          "registrant": {
            "organization": "privacyserviceprovidedbywithheldforprivacyehf",
            "phone": "3544212434",
            "email": "user@withheldforprivacy.com",
            "email_fqdn_apex": "withheldforprivacy.com",
            "email_domain_apex": "withheldforprivacy.com"
          }
        },
        "whois_last_check_date": "2026-09-08T09:06:34Z",
        "whois_create_date_historical": null,
        "whois_last_change_date": "2026-09-08T09:22:06Z",
        "whois_registrant_email_historical": null,
        "whois_privacy_enabled": true,
        "dns": {
          "a": {
            "update_date": "2026-09-08T09:21:11Z",
            "ip_addresses": [
              "192.64.119.67"
            ]
          }
        },
        "dns_last_change_date": "2026-09-08T09:21:12Z",
        "ip_history": null,
        "ssl": null,
        "ssl_last_change_date": null
      },
      "type": 2,
      "subdomain_level_count": 1,
      "dns": {
        "a": {
          "update_date": "2026-09-08T09:23:46Z",
          "ip_addresses": [
            "2.59.170.19",
            "104.219.250.36"
          ]
        },
        "aaaa": {
          "update_date": "2026-09-08T09:23:46Z",
          "ip_addresses": []
        },
        "ns": {
          "update_date": "2026-09-08T09:23:46Z",
          "name_servers": []
        },
        "mx": {
          "update_date": "2026-09-08T09:23:46Z",
          "mail_servers": []
        },
        "soa": {
          "update_date": "2026-09-08T09:23:46Z",
          "mnames": [],
          "rnames": [],
          "rname_emails": []
        },
        "txt": {
          "update_date": "2026-09-08T09:23:46Z",
          "values": []
        },
        "cname": {
          "update_date": "2026-09-08T09:23:46Z",
          "values": [
            "parkingpage.namecheap.com."
          ]
        },
        "others": []
      },
      "dns_last_change_date": "2026-09-08T09:23:46Z",
      "ip_history": [
        "104.219.250.36",
        "2.59.170.19"
      ],
      "ssl": null,
      "ssl_last_change_date": null,
      "webdata": {
        "connection_status": "success",
        "html": {
          "source_code_hash": "9dc2900bcff3911cb126966f933197811756c5bb42be63155aeaf0b786ae7123"
        },
        "http": {
          "status_code_first": 200,
          "status_code_last": 200,
          "redirection_history": [
            {
              "url": "http://www.sahalfund.com/",
              "status_code": 200
            }
          ],
          "external_redirection": null,
          "final_url": "http://www.sahalfund.com/",
          "final_fqdn": "www.sahalfund.com",
          "final_domain": "sahalfund.com",
          "headers": {
            "others": [
              {
                "name": "date",
                "value": "Tue, 08 Sep 2026 09:24:05 GMT"
              },
              {
                "name": "transfer_encoding",
                "value": "chunked"
              },
              {
                "name": "connection",
                "value": "close"
              },
              {
                "name": "vary",
                "value": "Accept-Encoding"
              },
              {
                "name": "etag",
                "value": "W/\"6a6b771b-b93\""
              }
            ],
            "access_control_allow_headers": null,
            "access_control_allow_methods": null,
            "access_control_allow_origin": null,
            "cache_control": null,
            "clear_site_data": null,
            "content_encoding": "gzip",
            "content_security_policy": null,
            "content_type": "text/html",
            "cross_origin_embedder_policy": null,
            "cross_origin_opener_policy": null,
            "cross_origin_resource_policy": null,
            "expect_ct": null,
            "feature_policy": null,
            "last_modified": "Thu, 30 Jul 2026 16:08:59 GMT",
            "permission_policy": null,
            "referrer_policy": null,
            "server": "nginx/1.28.3 (Ubuntu)",
            "set_cookie": null,
            "strict_transport_security": null,
            "x_content_type_options": null,
            "x_download_options": null,
            "x_frame_options": null,
            "x_permitted_cross_domain_policies": null,
            "x_powered_by": null,
            "x_xss_protection": null
          },
          "cookies": []
        }
      }
    },
    {
      "punycode": "www.a92ac8c58a50d419.43210gou2mc8sgd805pnv.mirakilouz-beatz.beatmantra.com",
      "unicode": "www.a92ac8c58a50d419.43210gou2mc8sgd805pnv.mirakilouz-beatz.beatmantra.com",
      "is_idn": false,
      "subdomain": {
        "punycode": "www.a92ac8c58a50d419.43210gou2mc8sgd805pnv.mirakilouz-beatz",
        "unicode": "www.a92ac8c58a50d419.43210gou2mc8sgd805pnv.mirakilouz-beatz",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": true,
        "contains_hyphen": true,
        "length": 56
      },
      "subdomain_last": {
        "punycode": "www",
        "unicode": "www",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "subdomain_root": {
        "punycode": "mirakilouz-beatz",
        "unicode": "mirakilouz-beatz",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": true,
        "length": 16
      },
      "name": {
        "punycode": "www.a92ac8c58a50d419.43210gou2mc8sgd805pnv.mirakilouz-beatz.beatmantra",
        "unicode": "www.a92ac8c58a50d419.43210gou2mc8sgd805pnv.mirakilouz-beatz.beatmantra",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": true,
        "contains_hyphen": true,
        "length": 66,
        "lang": "es",
        "keywords": [
          "wwwa",
          "ac",
          "gou",
          "mc",
          "sgd",
          "pnv",
          "mira",
          "kilo",
          "uz",
          "beatz"
        ],
        "keyword_count": 12,
        "latinized": [],
        "contains_confusable": false
      },
      "domain": {
        "punycode": "beatmantra.com",
        "unicode": "beatmantra.com",
        "is_idn": false,
        "name": {
          "punycode": "beatmantra",
          "unicode": "beatmantra",
          "is_idn": false,
          "contains_letter": true,
          "contains_number": false,
          "contains_hyphen": false,
          "length": 10,
          "lang": "en",
          "keywords": [
            "beat",
            "mantra"
          ],
          "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": "2026-03-12T13:45:24Z",
          "update_date": "2026-03-15T16:39:47Z",
          "expiry_date": "2027-03-12T13:45:24Z",
          "registrar": "namecheap, inc.",
          "registrant": {
            "name": "redacted for privacy",
            "organization": "privacy service provided by withheld for privacy ehf",
            "street": "kalkofnsvegur 2",
            "city": "reykjavik",
            "state": "capital region",
            "postal_code": "101",
            "country": "is",
            "phone": "+354.4212434",
            "email": "user@withheldforprivacy.com"
          },
          "name_servers": [
            "guy.ns.cloudflare.com",
            "lilith.ns.cloudflare.com"
          ],
          "domain_status": [
            "clienttransferprohibited"
          ],
          "whois_server": "whois.namecheap.com",
          "check_date": "2026-07-11T10:21:12Z"
        },
        "whois_normalized": {
          "registrant": {
            "organization": "privacyserviceprovidedbywithheldforprivacyehf",
            "phone": "3544212434",
            "email": "user@withheldforprivacy.com",
            "email_fqdn_apex": "withheldforprivacy.com",
            "email_domain_apex": "withheldforprivacy.com"
          }
        },
        "whois_last_check_date": "2026-07-11T10:21:12Z",
        "whois_create_date_historical": null,
        "whois_last_change_date": "2026-05-11T13:52:27Z",
        "whois_registrant_email_historical": null,
        "whois_privacy_enabled": true,
        "dns": {
          "a": {
            "update_date": "2026-08-19T10:31:11Z",
            "ip_addresses": [
              "187.124.114.167"
            ]
          }
        },
        "dns_last_change_date": "2026-07-22T07:17:16Z",
        "ip_history": null,
        "ssl": null,
        "ssl_last_change_date": null
      },
      "type": 2,
      "subdomain_level_count": 4,
      "dns": {
        "a": {
          "update_date": "2026-09-08T09:28:05Z",
          "ip_addresses": [
            "187.124.114.167"
          ]
        },
        "aaaa": {
          "update_date": "2026-09-08T09:28:05Z",
          "ip_addresses": []
        },
        "ns": {
          "update_date": "2026-09-08T09:28:05Z",
          "name_servers": []
        },
        "mx": {
          "update_date": "2026-09-08T09:28:05Z",
          "mail_servers": []
        },
        "soa": {
          "update_date": "2026-09-08T09:28:05Z",
          "mnames": [],
          "rnames": [],
          "rname_emails": []
        },
        "txt": {
          "update_date": "2026-09-08T09:28:05Z",
          "values": []
        },
        "cname": {
          "update_date": "2026-09-08T09:28:05Z",
          "values": []
        },
        "others": []
      },
      "dns_last_change_date": "2026-09-08T09:28:06Z",
      "ip_history": [
        "187.124.114.167"
      ],
      "ssl": null,
      "ssl_last_change_date": null,
      "webdata": {
        "connection_status": "too_many_redirects",
        "html": null,
        "http": null
      }
    },
    {
      "punycode": "www.nightmineral.com",
      "unicode": "www.nightmineral.com",
      "is_idn": false,
      "subdomain": {
        "punycode": "www",
        "unicode": "www",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "subdomain_last": {
        "punycode": "www",
        "unicode": "www",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "subdomain_root": {
        "punycode": "www",
        "unicode": "www",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 3
      },
      "name": {
        "punycode": "www.nightmineral",
        "unicode": "www.nightmineral",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 15,
        "lang": "en",
        "keywords": [
          "www",
          "night",
          "mineral"
        ],
        "keyword_count": 3,
        "latinized": [],
        "contains_confusable": false
      },
      "domain": {
        "punycode": "nightmineral.com",
        "unicode": "nightmineral.com",
        "is_idn": false,
        "name": {
          "punycode": "nightmineral",
          "unicode": "nightmineral",
          "is_idn": false,
          "contains_letter": true,
          "contains_number": false,
          "contains_hyphen": false,
          "length": 12,
          "lang": "en",
          "keywords": [
            "night",
            "mineral"
          ],
          "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": "2026-08-04T21:58:51Z",
          "update_date": "2026-08-04T21:58:54Z",
          "expiry_date": "2027-08-04T21:58:51Z",
          "registrar": "namecheap, inc.",
          "registrant": {
            "name": "redacted for privacy",
            "organization": "privacy service provided by withheld for privacy ehf",
            "street": "kalkofnsvegur 2",
            "city": "reykjavik",
            "state": "capital region",
            "postal_code": "101",
            "country": "is",
            "phone": "+354.4212434",
            "email": "user@withheldforprivacy.com"
          },
          "name_servers": [
            "dns1.registrar-servers.com",
            "dns2.registrar-servers.com"
          ],
          "domain_status": [
            "clienttransferprohibited"
          ],
          "whois_server": "whois.namecheap.com",
          "check_date": "2026-08-05T10:26:16Z"
        },
        "whois_normalized": {
          "registrant": {
            "organization": "privacyserviceprovidedbywithheldforprivacyehf",
            "phone": "3544212434",
            "email": "user@withheldforprivacy.com",
            "email_fqdn_apex": "withheldforprivacy.com",
            "email_domain_apex": "withheldforprivacy.com"
          }
        },
        "whois_last_check_date": "2026-08-05T10:26:16Z",
        "whois_create_date_historical": null,
        "whois_last_change_date": "2026-08-05T10:37:32Z",
        "whois_registrant_email_historical": null,
        "whois_privacy_enabled": true,
        "dns": {
          "a": {
            "update_date": "2026-08-05T10:23:54Z",
            "ip_addresses": [
              "23.227.38.65"
            ]
          }
        },
        "dns_last_change_date": "2026-08-05T10:23:55Z",
        "ip_history": null,
        "ssl": {
          "validity": {
            "start_date": "2026-08-04T21:06:02Z",
            "end_date": "2026-11-02T21:06:01Z"
          },
          "serial_number": "576158787868491637251166437518593619334875",
          "check_date": "2026-08-05T21:40:53Z"
        },
        "ssl_last_change_date": "2026-08-05T21:41:36Z"
      },
      "type": 2,
      "subdomain_level_count": 1,
      "dns": {
        "a": {
          "update_date": "2026-09-09T00:17:36Z",
          "ip_addresses": [
            "23.227.38.74"
          ]
        },
        "aaaa": {
          "update_date": "2026-09-09T00:17:36Z",
          "ip_addresses": [
            "2620:127:f00f:e::"
          ]
        },
        "ns": {
          "update_date": "2026-09-09T00:17:36Z",
          "name_servers": []
        },
        "mx": {
          "update_date": "2026-09-09T00:17:36Z",
          "mail_servers": []
        },
        "soa": {
          "update_date": "2026-09-09T00:17:36Z",
          "mnames": [],
          "rnames": [],
          "rname_emails": []
        },
        "txt": {
          "update_date": "2026-09-09T00:17:36Z",
          "values": []
        },
        "cname": {
          "update_date": "2026-09-09T00:17:36Z",
          "values": [
            "shops.myshopify.com."
          ]
        },
        "others": []
      },
      "dns_last_change_date": "2026-09-09T00:17:37Z",
      "ip_history": [
        "23.227.38.74"
      ],
      "ssl": null,
      "ssl_last_change_date": null,
      "webdata": null
    }
  ]
}

Content-Type: application/json
ratelimit-limit: 1000
ratelimit-remaining: 999
ratelimit-reset: 1
x-ratelimit-limit-hour: 100000
x-ratelimit-limit-minute: 10000
x-ratelimit-limit-second: 1000
x-ratelimit-remaining-hour: 99952
x-ratelimit-remaining-minute: 9979
x-ratelimit-remaining-second: 999
deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a

Request

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

Parameter	Value
`page_size`query	`25`
`filters.must[0].name`body	`domain.whois_normalized.registrant.email_fqdn_apex`
`filters.must[0].type`body	`eq`
`filters.must[0].value`body	`withheldforprivacy.com`

Reference updated September 26, 2026

Request

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