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 · 329 ms

HostCertsFirst seenLast seenDNS
santanaadventures.com 38 2026-05-02 2026-09-19 ok
*.santanaadventures.com 18 2026-05-02 2026-09-19 —
autoconfig.santanaadventures.com 3 2026-07-05 2026-09-04 ok
webdisk.santanaadventures.com 5 2026-06-08 2026-09-04 ok
cpanel.santanaadventures.com 5 2026-06-08 2026-09-04 ok
mail.santanaadventures.com 3 2026-06-08 2026-08-08 ok
webmail.santanaadventures.com 5 2026-06-08 2026-09-04 ok
server.santanaadventures.com 5 2026-05-09 2026-09-09 ok
cpcalendars.santanaadventures.com 5 2026-06-08 2026-09-04 ok
cpcontacts.santanaadventures.com 5 2026-06-08 2026-09-04 ok
www.santanaadventures.com 16 2026-05-06 2026-09-01 ok

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