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 · 278 ms

HostCertsFirst seenLast seenDNS
shopback.de 38 2025-07-01 2026-10-02 ok
*.shopback.de 42 2025-07-01 2026-10-02 —
fp.shopback.de 6 2026-07-10 2026-09-06 ok
surveys.shopback.de 2 2025-08-20 2026-07-21 ok
support.shopback.de 6 2026-06-03 2026-10-01 ok

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