The playground

Try any of 1462 endpoints — live.

Pick an endpoint, load a working example, tweak the params, and send — no signup to try. Results render the way the data deserves; raw JSON, headers & code are one tab away.

Playground demo key · api.reefapi.com

post/domain-availability/v1/check1 credit

Is one domain available? Combined RDAP and DNS verdict with confidence + Domainr-style status tokens + a register_url when free. Accepts domain OR name+tld.

Working example

Parameters

domainrequired

nameoptional

tldoptional

signaloptional

whoisoptional

include_piioptional

request preview

curl -X POST https://api.reefapi.com/domain-availability/v1/check \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"domain":"google.com"}'

Hit Send to run this endpoint live.