Associated Domains API — Infrastructure Discovery

Description

Discover related infrastructure by analyzing DNS records — mail servers, CDN providers, hosting, and other services connected to a domain.

Use Cases

Map a domain's infrastructure and service providers
Identify shared hosting or CDN relationships
Security analysis — understand the full attack surface

Parameters

Name	Type	Required	Description
`domain`	string	Yes	Domain name to analyze
`format`	string	No	Response format: json or markdown

Example Request

bash

curl -H 'X-API-Key: YOUR_KEY' \
  'https://api.example.com/dns/associated?domain=example.com'

python

import httpx

resp = httpx.get(
    "https://api.example.com/dns/associated?domain=example.com",
    headers={"X-API-Key": "YOUR_KEY"},
)
print(resp.json())

javascript

const resp = await fetch("https://api.example.com/dns/associated?domain=example.com", {
  headers: { "X-API-Key": "YOUR_KEY" },
});
const data = await resp.json();
console.log(data);

Example Response

json

{
  "domain": "example.com",
  "mail_servers": ["mail.example.com"],
  "nameservers": ["ns1.example.com", "ns2.example.com"],
  "detected_providers": ["Cloudflare CDN", "Google Workspace"]
}

Associated Domains

Description

Use Cases

Parameters

Related Tools in Domain

WHOIS Lookup

Bulk WHOIS Lookup

Domain Age Checker

Domain Availability

Bulk Domain Availability

TLD Search