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.

9 hosts · 277 ms

HostCertsFirst seenLast seenDNS
saritasa.com 26 2025-06-11 2026-09-15 ok
*.saritasa.com 26 2025-06-11 2026-09-15 —
2026.saritasa.com 5 2026-05-14 2026-09-11 ok
www.2026.saritasa.com 5 2026-05-14 2026-09-11 ok
test.qa.saritasa.com 4 2026-05-29 2026-09-23 ok
feedback.saritasa.com 3 2025-07-02 2026-06-02 ok
go.saritasa.com 10 2026-05-04 2026-08-30 ok
hr.saritasa.com 10 2026-05-15 2026-09-12 ok
codereview.saritasa.com 10 2026-04-25 2026-08-23 ok

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