Associated Domain Finder Examples · Example 1 of 11 in One Association Type

Same Registrant E-mail

GEThttps://api.deepinfo.com/v1/discovery/associated-domain-finder

The domains whose registrant e-mail equals that of cloudflare.co.at: 2, cloudflare.co.at itself and cloudflare.co.il.

Param: association domain
Value: whois_registrant_email cloudflare.co.at

association=whois_registrant_email compares the registrant e-mail address.

Two domains share it: cloudflare.co.at itself and cloudflare.co.il. The address is a Cloudflare mailbox; on this page it reads user@cloudflare.com, as does every address that is not a published role mailbox.

In the response, look at results[].domain.whois.registrant.email and results[].domain.whois_normalized.registrant.email_domain_apex.

Request

curl

curl 'https://api.deepinfo.com/v1/discovery/associated-domain-finder?domain=cloudflare.co.at&association=whois_registrant_email&page_size=25' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json'

Python

import requests

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

params = {
    "domain": "cloudflare.co.at",
    "association": "whois_registrant_email",
    "page_size": "25"
}

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/associated-domain-finder?domain=cloudflare.co.at&association=whois_registrant_email&page_size=25";

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/associated-domain-finder?domain=cloudflare.co.at&association=whois_registrant_email&page_size=25", 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/associated-domain-finder?domain=cloudflare.co.at&association=whois_registrant_email&page_size=25"))
            .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/associated-domain-finder?domain=cloudflare.co.at&association=whois_registrant_email&page_size=25");
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/associated-domain-finder?domain=cloudflare.co.at&association=whois_registrant_email&page_size=25',
    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/associated-domain-finder?domain=cloudflare.co.at&association=whois_registrant_email&page_size=25')

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[].domain.ip_history: first 10 items; results[].ip_history: first 10 items; results[].webdata.http.headers.others: first 10 items

Response Body

{
  "page": 1,
  "page_size": 25,
  "result_count": 2,
  "results": [
    {
      "punycode": "cloudflare.co.at",
      "unicode": "cloudflare.co.at",
      "is_idn": false,
      "subdomain": null,
      "subdomain_last": null,
      "subdomain_root": null,
      "name": {
        "punycode": "cloudflare",
        "unicode": "cloudflare",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 10,
        "lang": "en",
        "keywords": [
          "cloudflare"
        ],
        "keyword_count": 1,
        "latinized": [],
        "contains_confusable": false
      },
      "domain": {
        "punycode": "cloudflare.co.at",
        "unicode": "cloudflare.co.at",
        "is_idn": false,
        "name": {
          "punycode": "cloudflare",
          "unicode": "cloudflare",
          "is_idn": false,
          "contains_letter": true,
          "contains_number": false,
          "contains_hyphen": false,
          "length": 10,
          "lang": "en",
          "keywords": [
            "cloudflare"
          ],
          "keyword_count": 1
        },
        "extension": {
          "punycode": "co.at",
          "unicode": "co.at",
          "is_idn": false
        },
        "extension_root": {
          "punycode": "at",
          "unicode": "at",
          "is_idn": false
        },
        "extension_sub": {
          "punycode": "co",
          "unicode": "co",
          "is_idn": false
        },
        "extension_type": 2,
        "reserved": null,
        "premium": null,
        "registered": true,
        "whois": {
          "create_date": null,
          "update_date": "2021-01-03T20:07:24Z",
          "expiry_date": null,
          "registrar": "101domain grs ltd.",
          "registrant": {
            "name": "cloudflare inc",
            "organization": "cloudflare",
            "street": "665 3rd street",
            "city": "san francisco",
            "state": null,
            "postal_code": "94107",
            "country": "united states of america (the)",
            "phone": "+16503198930",
            "email": "user@cloudflare.com"
          },
          "name_servers": [
            "thomas.ns.cloudflare.com",
            "vita.ns.cloudflare.com"
          ],
          "domain_status": [],
          "whois_server": null,
          "check_date": "2026-06-17T22:35:32Z"
        },
        "whois_normalized": {
          "registrant": {
            "organization": "cloudflare",
            "phone": "16503198930",
            "email": "user@cloudflare.com",
            "email_fqdn_apex": "cloudflare.com",
            "email_domain_apex": "cloudflare.com"
          }
        },
        "whois_last_check_date": "2026-06-17T22:35:32Z",
        "whois_create_date_historical": [],
        "whois_last_change_date": null,
        "whois_registrant_email_historical": [
          "user@cloudflare.com"
        ],
        "whois_privacy_enabled": false,
        "dns": {
          "a": {
            "update_date": "2026-09-07T00:36:05Z",
            "ip_addresses": [
              "104.21.57.218",
              "172.67.167.13"
            ]
          }
        },
        "dns_last_change_date": "2026-09-07T00:37:08Z",
        "ip_history": [
          "104.21.57.218",
          "172.67.167.13",
          "172.64.80.1",
          "188.114.96.2",
          "188.114.97.2",
          "104.21.112.1",
          "104.21.16.1",
          "104.21.32.1",
          "104.21.48.1",
          "104.21.64.1"
        ],
        "ssl": {
          "validity": {
            "start_date": "2026-07-02T16:45:15Z",
            "end_date": "2026-09-30T17:43:38Z"
          },
          "serial_number": "340171976894111899412400308250546506914",
          "check_date": "2026-08-01T00:58:16Z"
        },
        "ssl_last_change_date": "2026-08-01T00:59:14Z"
      },
      "type": 1,
      "subdomain_level_count": 0,
      "dns": {
        "a": {
          "update_date": "2026-09-07T00:36:05Z",
          "ip_addresses": [
            "104.21.57.218",
            "172.67.167.13"
          ]
        },
        "aaaa": {
          "update_date": "2026-09-07T00:36:05Z",
          "ip_addresses": [
            "2606:4700:3031::6815:39da",
            "2606:4700:3035::ac43:a70d"
          ]
        },
        "ns": {
          "update_date": "2026-09-07T00:36:05Z",
          "name_servers": [
            "thomas.ns.cloudflare.com",
            "vita.ns.cloudflare.com"
          ]
        },
        "mx": {
          "update_date": "2026-09-07T00:36:05Z",
          "mail_servers": []
        },
        "soa": {
          "update_date": "2026-09-07T00:36:05Z",
          "mnames": [
            "thomas.ns.cloudflare.com"
          ],
          "rnames": [
            "dns.cloudflare.com"
          ],
          "rname_emails": [
            "user@cloudflare.com"
          ]
        },
        "txt": {
          "update_date": "2026-09-07T00:36:05Z",
          "values": [
            "\"v=spf1 -all\""
          ]
        },
        "cname": {
          "update_date": "2026-09-07T00:36:05Z",
          "values": []
        },
        "others": []
      },
      "dns_last_change_date": "2026-09-07T00:37:06Z",
      "ip_history": [
        "104.21.57.218",
        "172.67.167.13",
        "172.64.80.1",
        "188.114.96.2",
        "188.114.97.2",
        "104.21.112.1",
        "104.21.16.1",
        "104.21.32.1",
        "104.21.48.1",
        "104.21.64.1"
      ],
      "ssl": {
        "tags": [
          "dla"
        ],
        "fqdns": [
          "cloudflare.co.at"
        ],
        "version": 3,
        "serial_number": "340171976894111899412400308250546506914",
        "fingerprint": {
          "sha256": "732a8d78a57ed841e2d24efb8ab2e7cd318829b2adb91f24b712b5c5da367fc4",
          "sha1": "351999aec84fb160a46eb3b209adc99819c6ef0f",
          "md5": "5c4e61b379feb8745bf24f7edf99d98c"
        },
        "validity": {
          "start_date": "2026-07-02T16:45:15Z",
          "end_date": "2026-09-30T17:43:38Z",
          "length": 7779503
        },
        "signature": {
          "is_self_signed": false,
          "is_valid": true,
          "value": "MEQCICjuiRD2oWA6YmMZchPPlr9zGUt1WB/mfeXLc/Xi/9xgAiAjPzxA3AoOGQnHHehPIZ5xfaEbzq8knNC+ImYU14YzyA==",
          "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=cloudflare.co.at",
        "subject": {
          "common_name": "cloudflare.co.at",
          "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": [
            "2026-07-02T17:45:16Z"
          ],
          "subject_alt_name": {
            "dns_names": [
              "cloudflare.co.at",
              "*.cloudflare.co.at"
            ]
          },
          "subject_key_id": "ehC23DrIj2e+74TlkL/6l9r89EU="
        },
        "check_date": "2026-08-01T00:58:16Z"
      },
      "ssl_last_change_date": "2026-08-01T00:59:13Z",
      "webdata": {
        "connection_status": "success",
        "html": {
          "source_code_hash": "5ed8b057fba5cebda7c6db7e52e25ebc8773071336caca055afd5d0244651860"
        },
        "http": {
          "status_code_first": 301,
          "status_code_last": 200,
          "redirection_history": [
            {
              "url": "http://cloudflare.co.at/",
              "status_code": 301
            },
            {
              "url": "https://www.cloudflare.com",
              "status_code": 200
            }
          ],
          "external_redirection": true,
          "final_url": "https://www.cloudflare.com",
          "final_fqdn": "www.cloudflare.com",
          "final_domain": "cloudflare.com",
          "headers": {
            "others": [
              {
                "name": "date",
                "value": "Sun, 07 Jun 2026 16:49:53 GMT"
              },
              {
                "name": "transfer_encoding",
                "value": "chunked"
              },
              {
                "name": "connection",
                "value": "keep-alive"
              },
              {
                "name": "link",
                "value": "<https://www.cloudflare.com/.well-known/agents.json>; rel=\"api-catalog\", <https://www.cloudflare.com/.well-known/webmcp.json>; rel=\"service-desc\", <https://www.cloudflare.com/openapi.json>; rel=\"service-desc\", <https://www.cloudflare.com/llms.txt>; rel=\"service-doc\", <https://www.cloudflare.com/sitemap.xml>; rel=\"sitemap\", </fonts/Kunst%20Grotesk%20Regular.woff2>; rel=preload; as=font; type=\"font/woff2\"; crossorigin, </fonts/Kunst%20Grotesk%20Medium.woff2>; rel=preload; as=font; type=\"font/woff2\"; crossorigin, <https://ot.www.cloudflare.com>; rel=preconnect; crossorigin, <https://imagedelivery.net>; rel=preconnect; crossorigin, </static/hero-poster.avif>; rel=preload; as=image; type=\"image/avif\"; fetchpriority=high"
              },
              {
                "name": "vary",
                "value": "accept-encoding"
              },
              {
                "name": "cf_placement",
                "value": "local-ORD"
              },
              {
                "name": "permissions_policy",
                "value": "geolocation=(), camera=(), microphone=()"
              },
              {
                "name": "x_served_by",
                "value": "marketing-site"
              },
              {
                "name": "x_rm",
                "value": "GW"
              },
              {
                "name": "report_to",
                "value": "{\"group\":\"cf-nel\",\"max_age\":604800,\"endpoints\":[{\"url\":\"https://a.nel.cloudflare.com/report/v4?s=WYyFbOHK0KwtNa93on%2BQCTfLlemy254VbiMYWn5byKJpUVZpEFLrog5dCagKTR2ctqfBGYusoHylrFAFWFqhqOmmCspB0uqLrBFrOAlCV8bhBkWA%2Bz6Ci9ZrEyax9aIzQOt3oQ%3D%3D\"}]}"
              }
            ],
            "access_control_allow_headers": null,
            "access_control_allow_methods": null,
            "access_control_allow_origin": null,
            "cache_control": "public, max-age=10, s-maxage=10",
            "clear_site_data": null,
            "content_encoding": "gzip",
            "content_security_policy": "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://static.cloudflareinsights.com https://static-staging.cloudflareinsights.com https://challenges.cloudflare.com https://*.onetrust.com https://cdn.cookielaw.org https://ot.www.cloudflare.com https://www.googletagmanager.com https://tagmanager.google.com https://www.googleadservices.com https://googleads.g.doubleclick.net https://adservice.google.com https://cdn.bizible.com https://js.adsrvr.org https://*.marketo.net https://platform.twitter.com https://static.ads-twitter.com https://scripts.demandbase.com https://tag.demandbase.com https://*.6sc.co https://*.qualified.com https://snap.licdn.com https://bat.bing.com; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' https://*.googletagmanager.com https://*.google-analytics.com https://*.analytics.google.com https://analytics.google.com https://*.doubleclick.net https://www.googleadservices.com https://translate.googleapis.com https://cdn.bizible.com https://js.adsrvr.org https://*.marketo.net https://ads-twitter.com https://analytics.twitter.com https://*.twimg.com https://api.demandbase.com https://scripts.demandbase.com https://tag.demandbase.com https://tag-logger.demandbase.com https://api.company-target.com https://*.6sc.co https://epsilon.6sense.com https://*.qualified.com wss://*.qualified.com https://*.ads.linkedin.com https://www.linkedin.com https://bat.bing.com https:; frame-src https://*.adsrvr.org https://*.cloudflare.com https://*.videodelivery.net https://www.googletagmanager.com https://*.qualified.com https://td.doubleclick.net https://bid.g.doubleclick.net https://9309168.fls.doubleclick.net https://9973066.fls.doubleclick.net https://s.company-target.com; object-src 'none'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'; worker-src 'self' blob:; child-src 'self' blob:; upgrade-insecure-requests",
            "content_type": "text/html; charset=utf-8",
            "cross_origin_embedder_policy": null,
            "cross_origin_opener_policy": "unsafe-none",
            "cross_origin_resource_policy": "cross-origin",
            "expect_ct": null,
            "feature_policy": null,
            "last_modified": null,
            "permission_policy": null,
            "referrer_policy": "strict-origin-when-cross-origin",
            "server": "cloudflare",
            "set_cookie": "_ga=<value>; Domain=.cloudflare.com; Expires=Wed, 07 Jul 2027 16:49:53 GMT; Path=/, cfz_google-analytics_v4=<value>; Domain=.cloudflare.com; Expires=Wed Jul 07 2027 16:49:53 GMT+0000 (Coordinated Universal Time); HttpOnly; SameSite=Lax; Path=/; Secure, cfz_adobe=<value>; Domain=.cloudflare.com; Expires=Wed Jul 07 2027 16:49:53 GMT+0000 (Coordinated Universal Time); HttpOnly; SameSite=Lax; Path=/; Secure, kndctr_8AD56F28618A50850A495FB6_AdobeOrg_identity=<value>; Domain=.cloudflare.com; Expires=Wed, 07 Jul 2027 16:49:53 GMT; Path=/; Secure; SameSite=Lax, __cf_bm=<value>; HttpOnly; SameSite=None; Secure; Path=/; Domain=www.cloudflare.com; Expires=Sun, 07 Jun 2026 17:19:53 GMT",
            "strict_transport_security": "max-age=31536000; includeSubDomains",
            "x_content_type_options": "nosniff",
            "x_download_options": null,
            "x_frame_options": "SAMEORIGIN",
            "x_permitted_cross_domain_policies": null,
            "x_powered_by": null,
            "x_xss_protection": "1; mode=block"
          },
          "cookies": [
            {
              "name": "_ga",
              "value": "<value>"
            },
            {
              "name": "cfz_adobe",
              "value": "<value>"
            },
            {
              "name": "cfz_google-analytics_v4",
              "value": "<value>"
            },
            {
              "name": "kndctr_8AD56F28618A50850A495FB6_AdobeOrg_identity",
              "value": "<value>"
            },
            {
              "name": "__cf_bm",
              "value": "<value>"
            }
          ]
        }
      }
    },
    {
      "punycode": "cloudflare.co.il",
      "unicode": "cloudflare.co.il",
      "is_idn": false,
      "subdomain": null,
      "subdomain_last": null,
      "subdomain_root": null,
      "name": {
        "punycode": "cloudflare",
        "unicode": "cloudflare",
        "is_idn": false,
        "contains_letter": true,
        "contains_number": false,
        "contains_hyphen": false,
        "length": 10,
        "lang": "en",
        "keywords": [
          "cloudflare"
        ],
        "keyword_count": 1,
        "latinized": [],
        "contains_confusable": false
      },
      "domain": {
        "punycode": "cloudflare.co.il",
        "unicode": "cloudflare.co.il",
        "is_idn": false,
        "name": {
          "punycode": "cloudflare",
          "unicode": "cloudflare",
          "is_idn": false,
          "contains_letter": true,
          "contains_number": false,
          "contains_hyphen": false,
          "length": 10,
          "lang": "en",
          "keywords": [
            "cloudflare"
          ],
          "keyword_count": 1
        },
        "extension": {
          "punycode": "co.il",
          "unicode": "co.il",
          "is_idn": false
        },
        "extension_root": {
          "punycode": "il",
          "unicode": "il",
          "is_idn": false
        },
        "extension_sub": {
          "punycode": "co",
          "unicode": "co",
          "is_idn": false
        },
        "extension_type": 2,
        "reserved": null,
        "premium": null,
        "registered": true,
        "whois": {
          "create_date": "2013-12-18T00:00:00Z",
          "update_date": "2023-12-09T00:00:00Z",
          "expiry_date": "2025-12-18T00:00:00Z",
          "registrar": "domain the net technologies ltd",
          "registrant": {
            "name": "domain administrator",
            "organization": "cloudflare ltd",
            "street": "101 townsend st. san francisco ca",
            "city": null,
            "state": null,
            "postal_code": "94107",
            "country": "us",
            "phone": "+1 650 3198930",
            "email": "user@cloudflare.com"
          },
          "name_servers": [
            "thomas.ns.cloudflare.com",
            "vita.ns.cloudflare.com"
          ],
          "domain_status": [
            "transferlocked"
          ],
          "whois_server": null,
          "check_date": "2024-05-12T19:07:47Z"
        },
        "whois_normalized": {
          "registrant": {
            "organization": "cloudflareltd",
            "phone": "16503198930",
            "email": "user@cloudflare.com",
            "email_fqdn_apex": "cloudflare.com",
            "email_domain_apex": "cloudflare.com"
          }
        },
        "whois_last_check_date": "2024-05-12T19:07:47Z",
        "whois_create_date_historical": [
          "2013-12-18T00:00:00Z"
        ],
        "whois_last_change_date": "2023-12-12T00:40:37Z",
        "whois_registrant_email_historical": [
          "user@cloudflare.com"
        ],
        "whois_privacy_enabled": false,
        "dns": {
          "a": {
            "update_date": "2026-09-21T15:01:17Z",
            "ip_addresses": [
              "104.21.51.80",
              "172.67.177.100"
            ]
          }
        },
        "dns_last_change_date": "2026-09-21T15:02:12Z",
        "ip_history": [
          "104.21.51.80",
          "172.67.177.100"
        ],
        "ssl": {
          "validity": {
            "start_date": "2026-07-04T19:43:11Z",
            "end_date": "2026-10-02T20:43:08Z"
          },
          "serial_number": "325223332400799624369181953225901451702",
          "check_date": "2026-08-02T18:42:41Z"
        },
        "ssl_last_change_date": "2026-08-02T18:43:21Z"
      },
      "type": 1,
      "subdomain_level_count": 0,
      "dns": {
        "a": {
          "update_date": "2026-09-21T15:01:17Z",
          "ip_addresses": [
            "104.21.51.80",
            "172.67.177.100"
          ]
        },
        "aaaa": {
          "update_date": "2026-09-21T15:01:17Z",
          "ip_addresses": [
            "2606:4700:3030::6815:3350",
            "2606:4700:3034::ac43:b164"
          ]
        },
        "ns": {
          "update_date": "2026-09-21T15:01:17Z",
          "name_servers": [
            "thomas.ns.cloudflare.com",
            "vita.ns.cloudflare.com"
          ]
        },
        "mx": {
          "update_date": "2026-09-21T15:01:17Z",
          "mail_servers": []
        },
        "soa": {
          "update_date": "2026-09-21T15:01:17Z",
          "mnames": [
            "thomas.ns.cloudflare.com"
          ],
          "rnames": [
            "dns.cloudflare.com"
          ],
          "rname_emails": [
            "user@cloudflare.com"
          ]
        },
        "txt": {
          "update_date": "2026-09-21T15:01:17Z",
          "values": [
            "\"v=spf1 -all\""
          ]
        },
        "cname": {
          "update_date": "2026-09-21T15:01:17Z",
          "values": []
        },
        "others": []
      },
      "dns_last_change_date": "2026-09-21T15:02:11Z",
      "ip_history": [
        "104.21.51.80",
        "172.67.177.100"
      ],
      "ssl": {
        "tags": [
          "dla"
        ],
        "fqdns": [
          "cloudflare.co.il"
        ],
        "version": 3,
        "serial_number": "325223332400799624369181953225901451702",
        "fingerprint": {
          "sha256": "cfe1551ae96e950a607e8bdf16e9b54e18c37fddd6f2e55b85f234857c36d451",
          "sha1": "d9a6826b3c829ac3aa0802b66b45febfcbc62de3",
          "md5": "94d8c76d76e716dafda9bfc6d6b87c65"
        },
        "validity": {
          "start_date": "2026-07-04T19:43:11Z",
          "end_date": "2026-10-02T20:43:08Z",
          "length": 7779597
        },
        "signature": {
          "is_self_signed": false,
          "is_valid": true,
          "value": "MEUCIEFyORwe5oY/qVp9Tc68X0OjnFWqWm3bNEXD9Zt8PuzuAiEA3Y9HJYhzerCc4YuQ6gq5LeUDXwknxrRY/129+lW6dEI=",
          "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=cloudflare.co.il",
        "subject": {
          "common_name": "cloudflare.co.il",
          "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": [
            "2026-07-04T20:43:11Z"
          ],
          "subject_alt_name": {
            "dns_names": [
              "cloudflare.co.il",
              "*.cloudflare.co.il"
            ]
          },
          "subject_key_id": "kL8kv1egjKq05T5pKHWkz5tqOEE="
        },
        "check_date": "2026-08-02T18:42:41Z"
      },
      "ssl_last_change_date": "2026-08-02T18:43:20Z",
      "webdata": {
        "connection_status": "success",
        "html": {
          "source_code_hash": "b96e536b74dd7369cccd84c34ec94db9eaecd42535e99fc4564e0eb799b3bbef"
        },
        "http": {
          "status_code_first": 301,
          "status_code_last": 200,
          "redirection_history": [
            {
              "url": "http://cloudflare.co.il/",
              "status_code": 301
            },
            {
              "url": "https://www.cloudflare.com",
              "status_code": 200
            }
          ],
          "external_redirection": true,
          "final_url": "https://www.cloudflare.com",
          "final_fqdn": "www.cloudflare.com",
          "final_domain": "cloudflare.com",
          "headers": {
            "others": [
              {
                "name": "date",
                "value": "Wed, 26 Aug 2026 03:09:31 GMT"
              },
              {
                "name": "transfer_encoding",
                "value": "chunked"
              },
              {
                "name": "connection",
                "value": "keep-alive"
              },
              {
                "name": "link",
                "value": "<https://www.cloudflare.com/.well-known/agents.json>; rel=\"api-catalog\", <https://www.cloudflare.com/.well-known/webmcp.json>; rel=\"service-desc\", <https://www.cloudflare.com/openapi.json>; rel=\"service-desc\", <https://www.cloudflare.com/llms.txt>; rel=\"service-doc\", <https://www.cloudflare.com/sitemap.xml>; rel=\"sitemap\", </fonts/Kunst%20Grotesk%20Regular.woff2>; rel=preload; as=font; type=\"font/woff2\"; crossorigin, </fonts/Kunst%20Grotesk%20Medium.woff2>; rel=preload; as=font; type=\"font/woff2\"; crossorigin, <https://ot.www.cloudflare.com>; rel=preconnect; crossorigin, <https://imagedelivery.net>; rel=preconnect; crossorigin, </static/hero-poster.avif>; rel=preload; as=image; type=\"image/avif\"; fetchpriority=high"
              },
              {
                "name": "vary",
                "value": "accept-encoding"
              },
              {
                "name": "cf_placement",
                "value": "local-ORD"
              },
              {
                "name": "permissions_policy",
                "value": "geolocation=(), camera=(), microphone=()"
              },
              {
                "name": "x_served_by",
                "value": "marketing-site"
              },
              {
                "name": "x_rm",
                "value": "GW"
              },
              {
                "name": "report_to",
                "value": "{\"group\":\"cf-nel\",\"max_age\":604800,\"endpoints\":[{\"url\":\"https://a.nel.cloudflare.com/report/v4?s=z9y%2FK2EdKofpVSQH87i6mVWKN%2BkFKpHBm%2FG2EdZTM8xjWwyEZydeqvMLWagkvQPO8uhd44AcS0OaLlqb5BkeZZRFtxKPSP1tdc%2BTJFfm3Ex%2BitiU37gYUV51P7e%2FC5SV2LZq7Q%3D%3D\"}]}"
              }
            ],
            "access_control_allow_headers": null,
            "access_control_allow_methods": null,
            "access_control_allow_origin": null,
            "cache_control": "public, max-age=10, s-maxage=10",
            "clear_site_data": null,
            "content_encoding": "gzip",
            "content_security_policy": "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://static.cloudflareinsights.com https://static-staging.cloudflareinsights.com https://challenges.cloudflare.com https://*.onetrust.com https://cdn.cookielaw.org https://ot.www.cloudflare.com https://www.googletagmanager.com https://tagmanager.google.com https://www.googleadservices.com https://googleads.g.doubleclick.net https://adservice.google.com https://cdn.bizible.com https://js.adsrvr.org https://*.marketo.net https://platform.twitter.com https://static.ads-twitter.com https://scripts.demandbase.com https://tag.demandbase.com https://*.6sc.co https://*.qualified.com https://snap.licdn.com https://bat.bing.com; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' https://*.googletagmanager.com https://*.google-analytics.com https://*.analytics.google.com https://analytics.google.com https://*.doubleclick.net https://www.googleadservices.com https://translate.googleapis.com https://cdn.bizible.com https://js.adsrvr.org https://*.marketo.net https://ads-twitter.com https://analytics.twitter.com https://*.twimg.com https://api.demandbase.com https://scripts.demandbase.com https://tag.demandbase.com https://tag-logger.demandbase.com https://api.company-target.com https://*.6sc.co https://epsilon.6sense.com https://*.qualified.com wss://*.qualified.com https://*.ads.linkedin.com https://www.linkedin.com https://bat.bing.com https:; frame-src https://*.adsrvr.org https://*.cloudflare.com https://*.videodelivery.net https://*.cloudflarestream.com https://www.googletagmanager.com https://*.qualified.com https://td.doubleclick.net https://bid.g.doubleclick.net https://9309168.fls.doubleclick.net https://9973066.fls.doubleclick.net https://s.company-target.com; object-src 'none'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'; worker-src 'self' blob:; child-src 'self' blob:; upgrade-insecure-requests",
            "content_type": "text/html; charset=utf-8",
            "cross_origin_embedder_policy": null,
            "cross_origin_opener_policy": "unsafe-none",
            "cross_origin_resource_policy": "cross-origin",
            "expect_ct": null,
            "feature_policy": null,
            "last_modified": null,
            "permission_policy": null,
            "referrer_policy": "strict-origin-when-cross-origin",
            "server": "cloudflare",
            "set_cookie": "_ga=<value>; Expires=Sun, 26 Sep 2027 03:09:31 GMT; Path=/, cfz_google-analytics_v4=<value>; Expires=Sun Sep 26 2027 03:09:31 GMT+0000 (Coordinated Universal Time); HttpOnly; SameSite=Lax; Path=/; Secure, cfz_adobe=<value>; Expires=Sat Sep 25 2027 03:09:31 GMT+0000 (Coordinated Universal Time); HttpOnly; SameSite=Lax; Path=/; Secure, kndctr_8AD56F28618A50850A495FB6_AdobeOrg_identity=<value>; Expires=Sat, 25 Sep 2027 03:09:31 GMT; Path=/; Secure; SameSite=Lax, __cf_bm=<value>; HttpOnly; SameSite=None; Secure; Path=/; Domain=www.cloudflare.com; Expires=Wed, 26 Aug 2026 03:39:31 GMT",
            "strict_transport_security": "max-age=31536000; includeSubDomains",
            "x_content_type_options": "nosniff",
            "x_download_options": null,
            "x_frame_options": "SAMEORIGIN",
            "x_permitted_cross_domain_policies": null,
            "x_powered_by": null,
            "x_xss_protection": "1; mode=block"
          },
          "cookies": [
            {
              "name": "__cf_bm",
              "value": "<value>"
            },
            {
              "name": "_ga",
              "value": "<value>"
            },
            {
              "name": "cfz_adobe",
              "value": "<value>"
            },
            {
              "name": "cfz_google-analytics_v4",
              "value": "<value>"
            },
            {
              "name": "kndctr_8AD56F28618A50850A495FB6_AdobeOrg_identity",
              "value": "<value>"
            }
          ]
        }
      }
    }
  ],
  "domain": "cloudflare.co.at",
  "requested_association_parameters": [
    "whois_registrant_email"
  ],
  "applied_association_parameters": [
    "whois_registrant_email"
  ]
}

Content-Type: application/json
ratelimit-limit: 10
ratelimit-remaining: 9
ratelimit-reset: 14
x-ratelimit-limit-minute: 10
x-ratelimit-remaining-minute: 9
deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a

Request

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

Parameter	Value
`domain`query	`cloudflare.co.at`
`association`query	`whois_registrant_email`
`page_size`query	`25`

Reference updated September 26, 2026

Request

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