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 · 228 ms

HostCertsFirst seenLast seenDNS
lmde.fr 2 2025-09-16 2026-08-25 ok
*.lmde.fr 2 2025-09-16 2026-08-25 —
gtfvbn.lmde.fr 10 2026-04-20 2026-10-02 ok
img.news.lmde.fr 8 2026-05-06 2026-09-02 ok
r.news.lmde.fr 5 2026-04-24 2026-10-01 ok

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