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 · 380 ms

HostCertsFirst seenLast seenDNS
sunhomesaunas.com 14 2026-05-21 2026-09-30 ok
api.sunhomesaunas.com 3 2026-05-19 2026-09-02 ok
track.sunhomesaunas.com 11 2026-04-10 2026-10-07 ok
link.sunhomesaunas.com 3 2026-05-05 2026-08-23 ok
cdn.sunhomesaunas.com 5 2026-04-14 2026-09-22 ok
shop.sunhomesaunas.com 4 2026-04-16 2026-08-09 ok
forms.sunhomesaunas.com 6 2026-07-11 2026-09-08 ok
rest.sunhomesaunas.com 3 2026-05-07 2026-08-23 ok
www.sunhomesaunas.com 13 2026-05-21 2026-09-29 ok

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