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Gridlode
LiveDomains and SEO1 credit / request

Domain Availability API

Registry-level check of whether a domain is registered, via RDAP (WHOIS fallback for TLDs without RDAP). Premium or reserved names can still be unavailable at registrars.

GEThttps://api.gridlode.com/v1/domain/availability
Get an API keyReference docs

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Parameters

NameTypeDescription
domainrequiredstringDomain to check, e.g. gridlode.com.
max_ageintegerAccept a cached answer up to this many seconds old, billed at 50%. Default 0 (always fresh).

Response fields

  • available · true when the registry has no registration for the name.
  • method · rdap, or whois (server) for TLDs without RDAP.
  • checked_at · Time of the registry check.

Code

curl "https://api.gridlode.com/v1/domain/availability?domain=example.com" \
  -H "Authorization: Bearer $GRIDLODE_KEY"
1 credit per request
One credit is $0.001 on the smallest pack, from $0.0003 on enterprise plans.
Half price for cached data
Cached for up to 1 h. Pass max_age to use it.
Failed requests are free
Blocks, timeouts and target errors never cost credits.

Questions

Part of these solutions
How accurate is availability?

The check asks the registry directly. A domain marked available has no registration, but premium or reserved names can still be blocked or priced differently by registrars.

How much does the Domain Availability API cost?

1 credit per request. One credit costs $0.001 on the smallest pack and as little as $0.0003 on enterprise plans. Cached answers cost half and failed calls are free.

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