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 · 263 ms

HostCertsFirst seenLast seenDNS
casablancaparis.com 7 2026-04-23 2026-09-02 ok
showroom.casablancaparis.com 2 2025-08-08 2026-09-07 ok
sst.casablancaparis.com 3 2026-05-16 2026-09-04 ok
www.casablancaparis.com 9 2026-04-23 2026-09-02 ok
frontify.casablancaparis.com 1 2026-02-03 2026-02-03 ok

Programmatic access, with DNS A records: API GET /v1/hosts/casablancaparis.com (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/casablancaparis.com.