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WHOIS API

Published byAndré Filipe
5/22/2025

Endpoints

4

Ungrouped Endpoints
4

What is the WHOIS API?

Our powerful WHOIS and domain lookup API allows you to quickly check domain availability, retrieve WHOIS ownership data, monitor expiration dates, and inspect full DNS settings including A, MX, NS, and TXT records. Designed for developers, domain investors, and businesses, this API supports keyword-based domain search and validation, offers clean and structured JSON output for easy integration, and uses intelligent caching and a robust IP pool to bypass common rate limits. Whether you're building a registrar service, tracking expiring domains, or protecting brand assets, our fast and reliable API is the perfect tool for scalable domain management. Start free and upgrade as you grow.

WHOIS API is available on the JoJ API marketplace. Subscribe with a single JoJ API key, call it through one gateway, and pay from one wallet — no separate account or contract with the provider.

Pricing & plans About this API Discussions More APIs by @phylonx OpenAPI spec

WHOIS API endpoints

  • GET/api/v3.0/whois/tlds

    Supported TLDs

    Retrieves a list of all supported TLDs

  • GET/api/v3.0/whois

    WHOIS

    Checks the domain WHOIS records

  • GET/api/v3.0/whois/lookup

    Keyword Search

    Query up to 333 TLDs to check registered domains

  • GET/api/v3.0/dns

    DNS

    Checks the domain DNS records