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.

14 hosts · 428 ms

HostCertsFirst seenLast seenDNS
goodvets.com 2 2025-12-18 2025-12-19 ok
*.goodvets.com 2 2025-12-18 2025-12-19 —
cdrdata.goodvets.com 5 2026-05-11 2026-09-09 ok
staging.goodvets.com 1 2025-12-21 2025-12-21 ok
*.staging.goodvets.com 1 2025-12-21 2025-12-21 —
gtm.goodvets.com 5 2026-05-05 2026-09-02 ok
load.gtm.goodvets.com 9 2026-05-23 2026-09-19 ok
clicks.join.goodvets.com 2 2026-08-26 2026-08-26 ok
refer.goodvets.com 2 2026-04-13 2026-09-13 ok
clicks.goodvets.com 4 2026-06-04 2026-10-02 ok
dev.goodvets.com 1 2025-12-22 2025-12-22 ok
*.dev.goodvets.com 1 2025-12-22 2025-12-22 —
rx.goodvets.com 4 2026-04-07 2026-08-07 ok
mail.rx.goodvets.com 4 2026-04-07 2026-08-07 ok

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