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.

4 hosts · 237 ms

HostCertsFirst seenLast seenDNS
taonganews.com 9 2026-04-21 2026-09-30 ok
*.taonganews.com 9 2026-04-21 2026-09-30 —
img.taonganews.com 13 2026-06-03 2026-09-29 ok
r.taonganews.com 3 2026-05-25 2026-08-13 ok

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