How do I get a free Whois API key?

To get a free Whois API key, visit their official developer portal at https://www.whoisxmlapi.com/, sign up for a free developer account, and generate your API key from the dashboard. You can use it within the free tier rate limit of 500 req/month.

What is the rate limit for Whois API?

Whois provides a free tier rate limit of: 500 req/month. For high-throughput production requirements beyond this allowance, refer to their official documentation.

Can I use Whois in commercial projects?

Most free endpoints permit commercial or prototyping use within fair use terms. Please inspect official provider docs for production SLAs.

Does FreeAPI store data or charge fees for this service?

No. FreeAPI is an independent API directory and developer showcase. It does not sell third-party data or charge fees; it connects developers directly to official public endpoints.

Networking & ProtocolsKey RequiredFeatured

WhoisFree REST API

Domain name registration records, registrar details, and DNS nameservers

API Docs

Developer Workbench & Live ConsoleKey Required

Test real endpoints directly, inspect live JSON, or copy implementation code.

Official Docs

Endpoint Requestauth_required

GET

curl -X GET "https://www.whoisxmlapi.com/api/v1/resource?apiKey=YOUR_API_KEY" \
  -H "Accept: application/json" \
  -H "Authorization: Bearer <YOUR_API_KEY>"

ResponseReady / Idle

Ready for Live Evaluation

Click [ Send Request ] to dispatch a real request via FreeAPI proxy and inspect real JSON payloads.

Rate Limit

500 req/month

Auth Mode

Key Required

Security & CORS

HTTPS • CORS Ready

Protocol

REST / JSON

An external API key is required to authenticate requests with Whois. Allowance: 500 req/month.

Get API Key ↗

DigitalOcean

$200 Free Cloud Credit

ScraperAPI

5,000 Free API Credits

Bright Data

Web Unlocker & Proxies

COMPANION DEVELOPER TOOL0ms Client Sandbox

ICANN RDAP / Modern WHOIS Domain Inspector

Authoritative ICANN RDAP (RFC 9082) domain registry inspector for expiration dates, registrar metadata, and DNSSEC.

Launch Tool

Frequently Asked Questions (FAQ)

Technical and integration answers for Whois.

Yes, Whois is listed as a free endpoint on FreeAPI Directory with an allowance of: 500 req/month.

Official Service Provider Ownership: Whois

All data feeds, trademarks, and documentation belong directly to the original API provider. FreeAPI serves purely as a discovery index and documentation reference for developers.

DMCA / Takedown Request

Top Alternatives in Networking & Protocols

All Alternatives→

GET

ipify

Simple public IP address lookup API with universal CORS support

Networking & ProtocolsNo AuthCORSUnlimited

GET

IP-API

IP geolocation lookup returning ISP, latitude, longitude, and timezone

Networking & ProtocolsNo AuthCORS45 req/min

GET

ipapi.co

Accurate IP geolocation, currency, time zone, and ISP network lookup

Networking & ProtocolsNo AuthCORS30,000 req/month

GET

ipinfo.io

Enterprise IP address geolocation, ASN mapping, and VPN/proxy detection

Networking & ProtocolsAPI KeyCORS50,000 req/month

GET

ipstack

High-accuracy IP address geolocation, country, city, and ASN network lookup

Networking & ProtocolsAPI KeyCORS100 req/month

GET

IPWHOIS

IP address WHOIS registry data, netblock allocation, and abuse contacts

Networking & ProtocolsNo AuthCORS10,000 req/month

GET

GeoJS

Free and unlimited IP geolocation lookup REST endpoint with CORS support

Networking & ProtocolsNo AuthCORSUnlimited

GET

ProxyCheck

Detect fraudulent IP proxies, VPN exits, Tor nodes, and botnets

Networking & ProtocolsAPI KeyCORS100 req/day

Related Collections & Thematic Guides

CORS-Supported Frontend APIs Best Curated Free APIs