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.

9 hosts · 256 ms

HostCertsFirst seenLast seenDNS
investa.de 6 2025-10-06 2026-08-22 ok
*.investa.de 1 2025-10-06 2025-10-06 —
sbc.investa.de 1 2026-06-24 2026-06-24 ok
service.investa.de 5 2026-04-30 2026-08-28 ok
webdisk.investa.de 5 2026-04-22 2026-08-22 ok
cpanel.investa.de 5 2026-04-22 2026-08-22 ok
scepman.investa.de 2 2026-02-22 2026-06-14 ok
mta-sts.investa.de 2 2026-05-30 2026-08-09 ok
www.investa.de 5 2026-04-22 2026-08-22 ok

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