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.

7 hosts · 306 ms

HostCertsFirst seenLast seenDNS
anylist.com 2 2025-09-09 2026-08-09 ok
*.anylist.com 2 2025-09-09 2026-08-09 —
rosalia.anylist.com 5 2026-05-06 2026-09-19 ok
sam.anylist.com 7 2026-05-06 2026-09-19 ok
darius.anylist.com 1 2026-01-30 2026-01-30 ok
www.darius.anylist.com 1 2026-01-30 2026-01-30 nxdomain
dev.anylist.com 5 2026-05-06 2026-09-19 ok

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