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.

5 hosts · 239 ms

HostCertsFirst seenLast seenDNS
i.news.acecash-email.com 6 2026-04-16 2026-08-12 ok
l.news.acecash-email.com 15 2026-06-04 2026-10-01 ok
s.news.acecash-email.com 11 2026-05-18 2026-09-13 ok
w.news.acecash-email.com 8 2026-05-17 2026-09-12 ok
x.news.acecash-email.com 7 2026-05-24 2026-09-19 ok

Programmatic access, with DNS A records: API GET /v1/hosts/news.acecash-email.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/news.acecash-email.com.