Find every subdomain
of a domain.

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

4 hosts · 232 ms

HostCertsFirst seenLast seen
searoad.net 41 2026-04-30 2026-10-06
*.searoad.net 29 2026-04-30 2026-09-30
remote.searoad.net 2 2025-06-12 2026-05-21
www.searoad.net 14 2026-06-08 2026-10-04

Programmatic access: API GET /v1/hosts/searoad.net (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/searoad.net.