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 · 291 ms

HostCertsFirst seenLast seenDNS
imago-images.de 1 2026-03-11 2026-03-11 ok
*.imago-images.de 1 2026-03-11 2026-03-11 —
signature.imago-images.de 4 2026-08-11 2026-09-14 ok
video-cdn.imago-images.de 9 2026-04-17 2026-09-29 ok
lp.imago-images.de 12 2026-04-23 2026-09-05 ok
links.imago-images.de 2 2026-09-29 2026-09-29 ok

Programmatic access, with DNS A records: API GET /v1/hosts/imago-images.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/imago-images.de.