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.

3 hosts · 229 ms

HostCertsFirst seenLast seenDNS
tracking.ib60848.communication.bexley.fr 5 2026-04-25 2026-08-21 ok
ig.communication.bexley.fr 5 2026-06-02 2026-09-30 ok
tg.communication.bexley.fr 7 2026-06-02 2026-09-30 ok

Programmatic access, with DNS A records: API GET /v1/hosts/communication.bexley.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/communication.bexley.fr.