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.

11 hosts · 325 ms

HostCertsFirst seenLast seenDNS
citybeauty.com 44 2026-04-16 2026-10-01 ok
*.citybeauty.com 25 2026-04-16 2026-10-01 —
hub.citybeauty.com 6 2026-04-27 2026-10-03 ok
blog.citybeauty.com 4 2026-05-02 2026-08-16 ok
i.citybeauty.com 5 2026-04-09 2026-09-20 ok
link.citybeauty.com 5 2026-04-25 2026-08-28 ok
trk.citybeauty.com 8 2026-04-13 2026-08-09 ok
get.citybeauty.com 5 2026-05-06 2026-09-07 ok
account.citybeauty.com 15 2026-05-12 2026-09-11 ok
checkout.citybeauty.com 7 2026-04-17 2026-08-28 ok
www.citybeauty.com 15 2026-05-12 2026-09-10 ok

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