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 · 233 ms

HostCertsFirst seenLast seenDNS
sparkasse-amberg-sulzbach.de 1 2026-04-23 2026-04-23 ok
psd2-xs2a.sparkasse-amberg-sulzbach.de 2 2025-08-06 2026-06-26 nxdomain
module.sparkasse-amberg-sulzbach.de 1 2026-04-23 2026-04-23 ok
pk.hausbankvorteil.sparkasse-amberg-sulzbach.de 1 2026-01-03 2026-01-03 ok
www.pk.hausbankvorteil.sparkasse-amberg-sulzbach.de 1 2026-01-03 2026-01-03 nxdomain
news.sparkasse-amberg-sulzbach.de 5 2026-05-28 2026-09-25 ok
www.sparkasse-amberg-sulzbach.de 1 2026-04-23 2026-04-23 ok

Programmatic access, with DNS A records: API GET /v1/hosts/sparkasse-amberg-sulzbach.de (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/sparkasse-amberg-sulzbach.de.