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.

7 hosts · 332 ms

HostCertsFirst seenLast seenDNS
feednovascotia.ca 5 2026-06-01 2026-09-29 ok
unleashed.feednovascotia.ca 11 2026-06-23 2026-08-23 nxdomain
*.unleashed.feednovascotia.ca 11 2026-06-23 2026-08-23 —
oirpms.feednovascotia.ca 3 2026-07-15 2026-09-13 ok
api.oirpms.feednovascotia.ca 3 2026-07-15 2026-09-13 ok
status.feednovascotia.ca 5 2026-06-02 2026-09-30 ok
www.feednovascotia.ca 5 2026-06-01 2026-09-29 ok

Programmatic access, with DNS A records: API GET /v1/hosts/feednovascotia.ca (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/feednovascotia.ca.