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.

20 hosts · 404 ms

HostCertsFirst seenLast seenDNS
ca-norddefrance.fr 3 2026-05-31 2026-05-31 ok
conference.ca-norddefrance.fr 1 2026-01-28 2026-01-28 ok
trk.caisselocale.ca-norddefrance.fr 3 2026-06-13 2026-08-24 ok
psd2-api.ca-norddefrance.fr 3 2025-10-06 2026-09-24 ok
communication.ca-norddefrance.fr 5 2025-11-18 2026-09-07 ok
pre-communication.ca-norddefrance.fr 1 2026-05-18 2026-05-18 ok
www.communication.ca-norddefrance.fr 4 2026-04-17 2026-09-07 ok
fondation.ca-norddefrance.fr 5 2026-05-27 2026-09-23 ok
www.pp.prospection.ca-norddefrance.fr 1 2025-12-22 2025-12-22 ok
www.prospection.ca-norddefrance.fr 3 2025-07-09 2026-07-06 ok
confeco.ca-norddefrance.fr 1 2025-12-16 2025-12-16 nodata
ca-transfert-pp.ca-norddefrance.fr 1 2025-11-13 2025-11-13 ok
entreprises.ca-norddefrance.fr 3 2025-07-09 2026-07-06 ok
soireepriveegaleriedutemps.ca-norddefrance.fr 1 2025-09-08 2025-09-08 nodata
evenements.ca-norddefrance.fr 1 2025-11-20 2025-11-20 ok
pre-evenements.ca-norddefrance.fr 1 2025-11-20 2025-11-20 ok
recrutement.ca-norddefrance.fr 11 2025-11-20 2026-09-24 ok
pre-recrutement.ca-norddefrance.fr 1 2026-05-18 2026-05-18 ok
ca-transfert.ca-norddefrance.fr 1 2026-01-12 2026-01-12 ok
www.ca-norddefrance.fr 3 2025-07-09 2026-07-06 ok

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