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 · 240 ms

HostCertsFirst seenLast seenDNS
kita.gevestor-newsletter.de 4 2026-04-11 2026-08-09 ok
bimi.gevestor-newsletter.de 1 2026-05-12 2026-05-12 ok
mail.gevestor-newsletter.de 5 2026-05-09 2026-09-06 ok
confirm.gevestor-newsletter.de 3 2026-06-22 2026-08-21 ok
info.gevestor-newsletter.de 4 2026-04-11 2026-08-09 ok
immo.gevestor-newsletter.de 5 2026-05-17 2026-09-14 ok

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