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 · 271 ms

HostCertsFirst seenLast seenDNS
playbillstore.com 26 2026-04-12 2026-09-22 ok
*.playbillstore.com 11 2026-05-20 2026-09-18 —
track.playbillstore.com 5 2026-05-12 2026-09-09 ok
cart-com.playbillstore.com 11 2026-05-21 2026-09-16 ok
www.playbillstore.com 13 2026-05-25 2026-10-05 ok

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