The playground

Try any of 817 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/email-health/v1/dnssec1 credit

DNSSEC signing status: the DoH AD (Authenticated-Data) flag = the resolver cryptographically validated the answer, plus a DS record at the parent = the delegation is signed. Standalone lookup.

Working example
Parameters

The domain to inspect (a bare host like github.com; a full URL, a leading www., or a full email address are accepted and normalized to the registrable domain).

request preview
curl -X POST https://api.reefapi.com/email-health/v1/dnssec \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"domain":"cloudflare.com"}'

Hit Send to run this endpoint live.