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 · 329 ms

HostCertsFirst seenLast seenDNS
kabelschlepp.de 5 2026-04-26 2026-08-24 ok
brand.kabelschlepp.de 5 2026-05-05 2026-09-02 ok
helpdesk.kabelschlepp.de 6 2026-06-03 2026-10-01 ok
zeus.kabelschlepp.de 5 2026-04-26 2026-08-16 ok
www.kabelschlepp.de 5 2026-04-26 2026-08-24 ok

Programmatic access, with DNS A records: API GET /v1/hosts/kabelschlepp.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/kabelschlepp.de.