Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

2 hosts · 202 ms

HostCertsFirst seenLast seenDNS
img.pr.hod.care 20 2026-04-11 2026-10-05 ok
r.pr.hod.care 3 2026-06-07 2026-08-26 ok

Programmatic access, with DNS A records: API GET /v1/hosts/pr.hod.care (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/pr.hod.care.