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.

4 hosts · 235 ms

HostCertsFirst seenLast seenDNS
cnpre7.fr 1 2025-10-14 2025-10-14 nodata
*.cnpre7.fr 1 2025-10-14 2025-10-14 —
sbc.cnpre7.fr 2 2025-07-13 2026-07-13 ok
exo.cnpre7.fr 1 2025-10-30 2025-10-30 nxdomain

Programmatic access, with DNS A records: API GET /v1/hosts/cnpre7.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/cnpre7.fr.