A domain availability check queries the relevant TLD registry (or WHOIS server) in real time to determine whether a specific domain name can be registered. The check returns one of four states: available (unregistered, can be registered now), registered (in active use by another party), redemption period (recently expired, only the original owner can recover it), or pending delete (expired and about to become available again). WhoisFreaks queries 1,528 TLD registries directly, so results reflect the current registration state rather than cached WHOIS data.
Feature: Real-time queries against TLD registries and WHOIS servers - no cached data, no stale results
Feature: Coverage spans .com, .net, .org, all major ccTLDs (.uk, .de, .in, .pk, etc.), and hundreds of new gTLDs (.io, .ai, .app, .shop)
Feature: Returns four registration states: available, registered, redemption, or pending delete - the same states the registries themselves use
Feature: Domain-name suggestions surface alternatives when your first choice is taken
For registrar checkout flows, naming-platform integrations, and bulk availability checks across candidate domain lists, the Domain Availability API for registrars and naming platforms returns structured availability and WHOIS data in JSON with high concurrency.
Domain availability checks show up in four very different workflows: founders naming a new business, registrars building checkout flows, domain investors timing expired-domain drops, and brand teams defending trademarks across TLDs. The four use cases below are where it matters most.
Securing the right domain name is the first digital step for any business. Use Domain Availability to check your desired name across multiple TLDs simultaneously - comparing .com, .net, .io, .ai, and country-code options. If your first choice is taken, pair with the Domain Typosquats Tool to find what related domains are available.
Domain registrars and name-search platforms integrate the Domain Availability API to power real-time availability checks within their checkout flows. The API returns structured availability status, WHOIS data, and pricing signals for each queried domain - enabling seamless search-to-register experiences. Check the API documentation for integration specs and the Pricing page for API plan options.
Domain investors monitor expiring domains and use availability checks to verify the moment a target domain enters the add-grace period and becomes registrable. Bulk availability checking across large lists of candidate expired domains - via the API - is standard practice for identifying high-value drops before competitors.
Brand protection teams check domain availability across all relevant TLDs for new product names and trademarks before public launch - preemptively registering variations to prevent cybersquatting. Legal teams verify availability status as part of UDRP and trademark dispute evidence gathering. For discovering already-registered domains containing brand terms, use the Domain Typosquats tool.
WhoisFreaks queries live TLD registries and WHOIS servers in real time rather than relying on cached data, returning the current registration state of any domain across 1,528+ TLDs. The check is free, no account required, and returns the same four registration states the registries themselves use - available, registered, redemption, and pending delete.
Key features:
Availability status can change in seconds during high-demand drops. If a domain is available but highly desirable, act quickly - or use a drop-catching service to automate registration the moment it becomes available. For monitoring large lists of expiring or expired domains, see Dropped Domain Search.
