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.

17 hosts · 174 ms

HostCertsFirst seenLast seen
sufa.ch 3 2025-11-05 2026-06-17
tsip1.sufa.ch 1 2026-01-09 2026-01-09
mailgw62.sufa.ch 3 2026-01-07 2026-06-02
tsip2.sufa.ch 1 2026-01-09 2026-01-09
mailgw62a.sufa.ch 3 2026-01-07 2026-06-02
mailgw62b.sufa.ch 3 2026-01-07 2026-06-02
mailgw62c.sufa.ch 3 2026-01-07 2026-06-02
mta-sts.sec.sufa.ch 2 2025-06-25 2026-05-26
mailgw62d.sufa.ch 3 2026-01-07 2026-06-02
onprem.sufa.ch 1 2026-01-07 2026-01-07
smvpn.sufa.ch 1 2026-02-19 2026-02-19
ccsip.sufa.ch 2 2026-03-10 2026-09-09
tsip.sufa.ch 2 2026-03-10 2026-09-09
stsextralabor.sufa.ch 1 2026-06-10 2026-06-10
certauth.stsextralabor.sufa.ch 1 2026-06-10 2026-06-10
mta-sts.sufa.ch 3 2026-04-22 2026-09-22
www.sufa.ch 3 2025-11-05 2026-06-17

Programmatic access: API GET /v1/hosts/sufa.ch (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/sufa.ch.