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.

6 hosts · 281 ms

HostCertsFirst seenLast seenDNS
patrade.dk 7 2025-11-14 2026-08-18 ok
*.patrade.dk 1 2025-11-14 2025-11-14 —
vpn.patrade.dk 1 2025-12-17 2025-12-17 ok
ss.patrade.dk 5 2026-05-05 2026-09-02 ok
load.ss.patrade.dk 10 2026-04-28 2026-08-24 ok
www.patrade.dk 6 2026-05-08 2026-08-18 ok

Programmatic access, with DNS A records: API GET /v1/hosts/patrade.dk (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/patrade.dk.