Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

30 hosts · 218 ms

HostCertsFirst seenLast seen
fluege.de 9 2025-10-05 2026-09-06
*.fluege.de 16 2025-06-17 2026-09-06
media.fluege.de 1 2026-01-20 2026-01-20
*.frontend.fluege.de 9 2025-06-17 2026-08-26
secure.fluege.de 1 2026-02-09 2026-02-09
*.postbooking.fluege.de 8 2025-06-17 2026-08-26
*.search.fluege.de 8 2025-06-17 2026-08-26
*.metasearch.fluege.de 9 2025-06-17 2026-08-26
api.auth.fluege.de 8 2025-08-07 2026-08-26
*.book.fluege.de 8 2025-06-17 2026-08-26
crm.m.fluege.de 4 2026-04-20 2026-08-17
crm.fluege.de 14 2026-05-09 2026-09-05
reisen.fluege.de 7 2025-08-02 2026-09-09
*.reisen.fluege.de 5 2026-01-07 2026-09-09
login.reisen.fluege.de 11 2026-04-17 2026-07-31
msrmnt.reisen.fluege.de 1 2026-01-11 2026-01-11
mein.fluege.de 1 2026-02-05 2026-02-05
*.flightadmin.fluege.de 8 2025-06-17 2026-08-26
destination.fluege.de 2 2026-04-30 2026-04-30
go.fluege.de 4 2025-12-11 2026-07-01
car.fluege.de 5 2026-05-16 2026-09-13
web.gr.fluege.de 6 2026-01-08 2026-08-26
api.gr.fluege.de 8 2025-08-07 2026-08-26
app.gr.fluege.de 6 2026-01-08 2026-08-26
tr-s.fluege.de 6 2025-08-21 2026-09-13
clicks.fluege.de 2 2025-07-01 2026-06-01
crm.deals.fluege.de 4 2026-04-17 2026-08-13
*.ftools.fluege.de 8 2025-06-17 2026-08-26
assets.fluege.de 1 2026-01-21 2026-01-21
www.fluege.de 1 2025-12-18 2025-12-18

Programmatic access: API GET /v1/hosts/fluege.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/fluege.de.