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.

38 hosts · 283 ms

HostCertsFirst seenLast seenDNS
cresus.ch 10 2026-05-13 2026-09-30 ok
downloads.0.cresus.ch 5 2026-05-06 2026-09-04 ok
sandbox1.cresus.ch 5 2026-04-18 2026-08-16 ok
downloads.2.cresus.ch 3 2026-06-02 2026-08-11 ok
api2.cresus.ch 5 2026-04-18 2026-08-16 ok
v2.cresus.ch 5 2026-05-22 2026-09-19 ok
sync.cresus.ch 4 2026-04-16 2026-08-15 ok
vc.cresus.ch 6 2026-06-02 2026-10-01 ok
download.cresus.ch 5 2026-05-06 2026-09-03 ok
sondage.cresus.ch 2 2026-08-06 2026-10-05 ok
vitrine.cresus.ch 5 2026-04-22 2026-09-02 ok
choppe.cresus.ch 4 2026-04-18 2026-08-16 ok
webinaire.cresus.ch 5 2026-05-22 2026-09-19 ok
clima.api.cresus.ch 5 2026-05-30 2026-09-28 ok
monolith.api.cresus.ch 4 2026-04-20 2026-08-18 ok
auth.api.cresus.ch 5 2026-05-01 2026-08-29 ok
blink.api.cresus.ch 5 2026-05-22 2026-09-19 ok
michel.api.cresus.ch 5 2026-05-07 2026-09-04 ok
william.api.cresus.ch 6 2026-05-08 2026-09-16 ok
naboo.api.cresus.ch 5 2026-05-06 2026-09-04 ok
nwp.api.cresus.ch 5 2026-05-28 2026-09-25 ok
mailer.api.cresus.ch 5 2026-04-24 2026-08-22 ok
announcements.api.cresus.ch 1 2026-09-16 2026-09-16 ok
bus.api.cresus.ch 5 2026-05-07 2026-09-04 ok
cirrus.api.cresus.ch 5 2026-05-05 2026-09-03 ok
vault.api.cresus.ch 5 2026-04-28 2026-08-27 ok
passport.api.cresus.ch 5 2026-04-24 2026-08-22 ok
pay.api.cresus.ch 5 2026-05-30 2026-09-28 ok
blink.cresus.ch 6 2026-05-07 2026-09-19 ok
horizon.cresus.ch 5 2026-05-30 2026-09-28 ok
shop.cresus.ch 4 2026-04-18 2026-08-16 ok
docker.cresus.ch 3 2026-07-15 2026-09-18 ok
mta-sts.cresus.ch 5 2026-04-28 2026-09-13 ok
cirrus.cresus.ch 5 2026-05-07 2026-09-04 ok
support.cresus.ch 5 2026-05-18 2026-09-26 ok
devsupport.cresus.ch 3 2026-06-07 2026-08-16 ok
partout.cresus.ch 4 2026-06-05 2026-10-04 ok
www.cresus.ch 10 2026-05-13 2026-09-30 ok

Programmatic access, with DNS A records: API GET /v1/hosts/cresus.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/cresus.ch.