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.

100 hosts (first page) · 479 ms

HostCertsFirst seenLast seenDNS
post.ch 4 2025-08-29 2026-06-22 ok
cs-1.post.ch 2 2025-09-08 2026-06-30 ok
csint-1.post.ch 2 2025-09-08 2026-06-30 ok
jiradc01.post.ch 3 2025-10-17 2025-11-04 nxdomain
wikitdc01.post.ch 2 2025-10-20 2026-09-21 nxdomain
jiraintdc01.post.ch 3 2025-10-29 2025-11-28 nxdomain
wikitintdc01.post.ch 3 2025-10-29 2025-11-28 nxdomain
rasicazf01.post.ch 4 2025-11-11 2026-09-21 ok
syslogprodzf01.post.ch 2 2025-07-25 2026-07-16 nxdomain
syslogintzf01.post.ch 2 2025-07-25 2026-07-16 nxdomain
rasicaeh01.post.ch 2 2025-11-11 2026-09-21 ok
syslogprodeh01.post.ch 2 2025-07-25 2026-07-16 nxdomain
sysloginteh01.post.ch 2 2025-07-25 2026-07-16 nxdomain
cs11.post.ch 2 2026-03-13 2026-07-20 ok
cs21.post.ch 1 2026-01-09 2026-01-09 nxdomain
connecta1.post.ch 1 2025-11-12 2025-11-12 ok
mova1.post.ch 1 2026-01-09 2026-01-09 ok
island1.post.ch 14 2026-06-25 2026-08-25 ok
sampleapp-island1.post.ch 6 2026-06-25 2026-08-23 ok
*.island1.post.ch 8 2026-06-25 2026-08-25 —
mftserver1.island1.post.ch 6 2026-09-15 2026-09-18 nodata
*.mftserver1.island1.post.ch 6 2026-09-15 2026-09-18 —
sampleapp.island1.post.ch 6 2026-06-25 2026-08-23 ok
customer-service1.post.ch 2 2026-03-27 2026-08-03 nxdomain
digital-commerce1.post.ch 1 2025-11-12 2025-11-12 ok
it-berufe1.post.ch 1 2025-11-12 2025-11-12 ok
avenir-desirable1.post.ch 1 2026-01-09 2026-01-09 ok
fuer-alle1.post.ch 1 2025-11-12 2025-11-12 ok
example1.post.ch 1 2026-02-09 2026-02-09 ok
abholung-online1.post.ch 1 2025-11-12 2025-11-12 ok
venture1.post.ch 1 2025-11-12 2025-11-12 ok
fit-im-beruf1.post.ch 1 2025-11-12 2025-11-12 ok
kg1.post.ch 1 2025-11-12 2025-11-12 ok
digitaler-posteingang1.post.ch 1 2025-11-12 2025-11-12 ok
advertising1.post.ch 2 2025-07-21 2026-05-20 ok
eu-verzollung1.post.ch 1 2025-11-12 2025-11-12 ok
example-cug1.post.ch 1 2026-02-09 2026-02-09 ok
e-health-kundenbereich1.post.ch 1 2025-11-12 2025-11-12 ok
handbuch1.post.ch 2 2026-03-27 2026-08-03 ok
guestauth1.post.ch 1 2026-01-19 2026-01-19 ok
international1.post.ch 1 2025-11-12 2025-11-12 nxdomain
locarno-festival1.post.ch 2 2026-02-09 2026-02-09 ok
retail1.post.ch 1 2025-11-12 2025-11-12 ok
schreiben1.post.ch 1 2025-11-12 2025-11-12 ok
wohnen-zollikofen1.post.ch 1 2025-11-12 2025-11-12 ok
meine-sendungen1.post.ch 1 2025-11-12 2025-11-12 ok
laborsendungen1.post.ch 1 2025-11-12 2025-11-12 ok
immobilien1.post.ch 1 2025-11-12 2025-11-12 ok
entdecken1.post.ch 1 2025-11-12 2025-11-12 ok
kampagnen1.post.ch 1 2025-11-12 2025-11-12 ok
agenturen1.post.ch 1 2025-11-12 2025-11-12 nxdomain
zweixweihnachten1.post.ch 1 2025-11-12 2025-11-12 ok
lieferanten1.post.ch 1 2025-11-12 2025-11-12 ok
wandern1.post.ch 1 2025-11-12 2025-11-12 ok
salt-abo1.post.ch 1 2025-11-12 2025-11-12 ok
msdemo1.post.ch 1 2025-11-12 2025-11-12 ok
klp-help1.post.ch 1 2025-11-12 2025-11-12 ok
crypto-stamp1.post.ch 2 2025-07-21 2026-05-20 ok
filialemitpartner1.post.ch 1 2025-11-12 2025-11-12 ok
developer1.post.ch 1 2025-11-12 2025-11-12 ok
weiter1.post.ch 2 2026-03-27 2026-08-03 ok
spimr1.post.ch 1 2026-05-22 2026-05-22 ok
cs1.post.ch 2 2026-03-13 2026-07-20 ok
n.accountds1.post.ch 1 2026-01-12 2026-01-12 nxdomain
stories1.post.ch 1 2025-11-12 2025-11-12 ok
microsites1.post.ch 1 2025-11-12 2025-11-12 ok
dialogmarketingsolutions1.post.ch 1 2025-11-12 2025-11-12 ok
postcompanycars1.post.ch 1 2025-11-12 2025-11-12 ok
incamail-stakeholders1.post.ch 1 2025-11-12 2025-11-12 ok
awareness1.post.ch 1 2025-11-12 2025-11-12 ok
direct1.post.ch 1 2025-11-12 2025-11-12 ok
e-wallet1.post.ch 1 2026-02-09 2026-02-09 ok
testworkspaceinet1.post.ch 1 2025-07-22 2025-07-22 nxdomain
myworkspaceinet1.post.ch 1 2025-07-24 2025-07-24 nxdomain
int1.post.ch 2 2026-01-09 2026-05-20 ok
customer-service-int1.post.ch 2 2026-03-27 2026-08-03 ok
cs2int1.post.ch 1 2026-01-09 2026-01-09 nxdomain
connectaint1.post.ch 1 2025-11-06 2025-11-06 ok
movaint1.post.ch 1 2026-01-09 2026-01-09 ok
serviceint1.post.ch 1 2026-01-14 2026-01-14 ok
imageserviceint1.post.ch 1 2026-02-02 2026-02-02 ok
digital-commerceint1.post.ch 1 2025-11-06 2025-11-06 ok
it-berufeint1.post.ch 1 2025-11-06 2025-11-06 ok
avenir-desirableint1.post.ch 1 2026-01-09 2026-01-09 ok
fuer-alleint1.post.ch 1 2025-11-06 2025-11-06 ok
exampleint1.post.ch 1 2026-02-09 2026-02-09 ok
abholung-onlineint1.post.ch 1 2025-11-06 2025-11-06 ok
ventureint1.post.ch 1 2025-11-06 2025-11-06 ok
fit-im-berufint1.post.ch 1 2025-11-06 2025-11-06 ok
kgint1.post.ch 1 2025-11-06 2025-11-06 ok
digitaler-posteingangint1.post.ch 1 2025-11-06 2025-11-06 ok
eu-verzollungint1.post.ch 1 2025-11-06 2025-11-06 ok
example-cugint1.post.ch 1 2026-02-09 2026-02-09 ok
e-health-kundenbereichint1.post.ch 1 2025-11-06 2025-11-06 ok
handbuchint1.post.ch 2 2026-03-27 2026-08-03 ok
internationalint1.post.ch 1 2025-11-06 2025-11-06 nxdomain
locarno-festivalint1.post.ch 1 2026-02-09 2026-02-09 ok
retailint1.post.ch 1 2025-11-06 2025-11-06 ok
schreibenint1.post.ch 1 2025-11-06 2025-11-06 ok
wohnen-zollikofenint1.post.ch 1 2025-11-06 2025-11-06 ok

Showing the first 100 hostnames — sign in with GitHub or Google to page the full list, or use the API with an API key: GET /v1/hosts/post.ch.

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/post.ch.