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 · 239 ms

HostCertsFirst seenLast seenDNS
maisonlafleur.com 18 2026-04-26 2026-09-24 ok
*.maisonlafleur.com 16 2026-04-26 2026-09-24 —
account.maisonlafleur.com 3 2026-04-15 2026-06-14 ok
www.maisonlafleur.com 3 2026-04-14 2026-06-13 ok

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