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 " : "…