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.

15 hosts · 200 ms

HostCertsFirst seenLast seen
cogep.fr 6 2026-02-09 2026-08-29
*.cogep.fr 1 2026-02-09 2026-02-09
rgpd.cogep.fr 1 2026-02-05 2026-02-05
isuite.ppd.cogep.fr 1 2026-02-13 2026-02-13
cactrack.cogep.fr 3 2026-06-16 2026-09-14
studio.cactrack.cogep.fr 3 2026-06-16 2026-09-14
info.communication.cogep.fr 11 2026-05-07 2026-09-04
mercury-bis.communication.cogep.fr 8 2026-05-01 2026-09-01
mercury.communication.cogep.fr 10 2026-05-01 2026-09-01
dpo.cogep.fr 1 2026-02-05 2026-02-05
forms.cogep.fr 8 2026-05-04 2026-08-01
clients.cogep.fr 1 2026-04-29 2026-04-29
support.cogep.fr 9 2026-05-31 2026-09-26
www.cogep.fr 5 2026-05-01 2026-08-29
nosbureaux.cogep.fr 2 2025-12-08 2025-12-08

Programmatic access: API GET /v1/hosts/cogep.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/cogep.fr.