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.

5 hosts · 276 ms

HostCertsFirst seenLast seenDNS
ca-anjou-maine.fr 4 2026-05-31 2026-05-31 ok
assistance.ca-anjou-maine.fr 3 2026-06-15 2026-08-14 ok
psd2-api.ca-anjou-maine.fr 2 2025-10-06 2026-09-08 ok
recrutement.ca-anjou-maine.fr 11 2026-04-28 2026-09-24 ok
www.ca-anjou-maine.fr 2 2025-08-01 2026-07-06 ok

Programmatic access, with DNS A records: API GET /v1/hosts/ca-anjou-maine.fr (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/ca-anjou-maine.fr.