Domain WHOIS API: Get Registration, Expiry and Ownership Data in One Call

A domain's WHOIS data tells you everything: who owns it, when it was registered, when it expires, which nameservers it uses, and what registrar manages it.

Problem: Most WHOIS tools require manual lookups, and bulk WHOIS from traditional providers costs hundreds per month.

Domain WHOIS Lookup API does it in one call. REST endpoint, free tier, instant results.

What it does

POST /whois

Registrar name
Creation date
Expiration date
Updated date
Days until expiry
Status flags
Nameservers (up to 4)
Country
Organization
IP address (resolved)
Is expired? (boolean)

Use cases

Domain monitoring — track when your competitors' domains are about to expire
SEO audits — check nameserver config for domains you're auditing
Threat intel — identify newly registered domains from a registrar
Bulk domain validation — verify ownership before outreach
WHOIS scraping — avoid rate limits from manual WHOIS servers

Quick example

import requests

url = "https://domain-whois-lookup.p.rapidapi.com/whois"
headers = {
    "X-RapidAPI-Key": "YOUR_KEY",
    "Content-Type": "application/json"
}
payload = {"domain": "github.com"}

r = requests.post(url, json=payload, headers=headers)
print(r.json())

Response:

{
  "domain": "github.com",
  "registrar": "MarkMonitor, Inc.",
  "creation_date": "2007-10-09T18:20:50+00:00",
  "expiration_date": "2026-10-09T18:20:50+00:00",
  "updated_date": "2024-09-07T09:16:32+00:00",
  "days_until_expiry": 158,
  "status": ["clientDeleteProhibited", "clientTransferProhibited"],
  "name_servers": ["ns1.github.com", "ns2.github.com", "ns3.github.com"],
  "country": "US",
  "org": "GitHub, Inc.",
  "ip_address": "140.82.112.4",
  "is_expired": false
}