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.

22 hosts · 318 ms

HostCertsFirst seenLast seenDNS
ffb.de 1 2026-02-03 2026-02-03 ok
*.ffb.de 1 2026-03-30 2026-03-30 —
kyndryl-2.ffb.de 4 2026-07-20 2026-07-20 ok
fidelitypd.ffb.de 3 2025-08-01 2026-06-16 ok
author.fidelitypd.ffb.de 3 2026-06-08 2026-08-17 ok
maintenance.ffb.de 1 2026-02-03 2026-02-03 ok
fondsgespraeche.ffb.de 2 2025-08-01 2026-06-16 ok
author.fondsgespraeche.ffb.de 3 2026-06-08 2026-08-17 ok
kyndryl.ffb.de 10 2026-07-20 2026-09-17 ok
carpediem.ffb.de 3 2025-09-03 2026-08-25 ok
perf.carpediem.ffb.de 3 2025-09-03 2026-08-25 ok
wissen.carpediem.ffb.de 6 2026-05-31 2026-09-29 ok
wissen.ffb.de 5 2026-05-31 2026-09-29 ok
fondsgespraechenp.ffb.de 1 2025-07-21 2025-07-21 ok
author.fondsgespraechenp.ffb.de 3 2026-06-08 2026-08-17 ok
fidelitynp.ffb.de 1 2025-07-14 2025-07-14 ok
author.fidelitynp.ffb.de 3 2026-06-08 2026-08-17 ok
autodiscover.ffb.de 2 2025-07-23 2025-07-23 nxdomain
news.ffb.de 5 2026-05-05 2026-09-02 ok
fww.ffb.de 3 2025-09-03 2026-08-27 ok
carpediem.fww.ffb.de 3 2025-09-03 2026-08-27 ok
www.ffb.de 1 2026-02-03 2026-02-03 ok

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