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.

77 hosts · 183 ms

HostCertsFirst seenLast seen
ida.dk 12 2026-01-09 2026-09-10
*.ida.dk 11 2026-05-05 2026-09-10
techfestival1.ida.dk 12 2026-05-15 2026-09-11
job.ida.dk 10 2026-05-07 2026-09-04
e.ida.dk 4 2026-04-19 2026-09-06
tst-e.ida.dk 3 2026-06-12 2026-08-20
newinsurance.ida.dk 14 2026-05-21 2026-09-16
studerende.ida.dk 5 2026-04-30 2026-08-27
itstuderende.ida.dk 19 2026-05-26 2026-09-21
idastudie.ida.dk 4 2026-04-19 2026-09-06
e.moodle.ida.dk 5 2026-04-23 2026-09-22
fordele.ida.dk 10 2026-05-28 2026-09-23
nyhedsbreve.ida.dk 12 2026-04-29 2026-08-25
tracking.ida.dk 4 2026-04-19 2026-09-06
booking.ida.dk 1 2026-05-19 2026-05-19
www.booking.ida.dk 1 2026-05-19 2026-05-19
learning.ida.dk 4 2026-04-19 2026-09-06
fresh.ida.dk 8 2026-05-02 2026-08-28
ci.ida.dk 10 2026-05-05 2026-09-10
*.ci.ida.dk 10 2026-05-05 2026-09-10
loenstatistik.ida.dk 16 2026-06-03 2026-09-29
link.ida.dk 8 2026-05-07 2026-09-04
netvaerk.ida.dk 4 2026-04-19 2026-09-06
techfestival.ida.dk 16 2026-05-12 2026-09-07
tvivl.ida.dk 16 2026-05-07 2026-09-02
dimittendberegnerdk.viscom.ida.dk 1 2026-06-23 2026-06-23
barselsberegnerdk.viscom.ida.dk 2 2026-06-22 2026-06-23
dimittendberegneruk.viscom.ida.dk 1 2026-06-23 2026-06-23
barselsberegneruk.viscom.ida.dk 1 2026-06-23 2026-06-23
barselsberegnerdk-gamle-regler.viscom.ida.dk 1 2026-06-23 2026-06-23
sgtm.ida.dk 4 2026-06-05 2026-09-21
viden.ida.dk 4 2026-04-19 2026-09-06
win.ida.dk 2 2026-08-20 2026-08-20
region.ida.dk 4 2026-04-19 2026-09-06
info.ida.dk 4 2026-04-19 2026-09-06
icp.ida.dk 10 2026-05-05 2026-09-10
*.icp.ida.dk 10 2026-05-05 2026-09-10
ci.icp.ida.dk 10 2026-05-05 2026-09-11
*.ci.icp.ida.dk 10 2026-05-05 2026-09-11
mon.icp.ida.dk 10 2026-05-14 2026-10-09
*.mon.icp.ida.dk 10 2026-05-14 2026-10-09
k8s.icp.ida.dk 10 2026-05-05 2026-09-11
*.k8s.icp.ida.dk 10 2026-05-05 2026-09-11
uat.icp.ida.dk 10 2026-05-05 2026-09-11
*.uat.icp.ida.dk 10 2026-05-05 2026-09-11
prep.ida.dk 11 2026-01-27 2026-09-10
*.prep.ida.dk 11 2026-01-27 2026-09-10
forsikringer.ida.dk 4 2026-04-19 2026-09-06
nyeforsikringer.ida.dk 20 2026-05-21 2026-09-16
matchmaker.ida.dk 10 2026-05-18 2026-09-13
netvaerksgrupper.ida.dk 16 2026-05-26 2026-09-22
salary-statistics.ida.dk 12 2026-04-22 2026-08-18
videos.ida.dk 11 2026-06-01 2026-09-27
e.nps.ida.dk 3 2026-06-24 2026-09-08
idabenefits.ida.dk 4 2026-04-19 2026-09-06
campus.ida.dk 5 2026-04-19 2026-09-16
studerendecampus.ida.dk 1 2026-09-16 2026-09-16
interncampus.ida.dk 1 2026-09-16 2026-09-16
erhvervsaktivcampus.ida.dk 1 2026-09-16 2026-09-16
uat.ida.dk 10 2026-05-05 2026-09-10
*.uat.ida.dk 10 2026-05-05 2026-09-10
it.ida.dk 12 2026-04-20 2026-08-16
kontakt.ida.dk 1 2025-11-17 2025-11-17
outplacement.ida.dk 15 2026-05-23 2026-09-18
payment.ida.dk 1 2026-09-11 2026-09-11
event.ida.dk 4 2026-04-19 2026-09-06
fpt.ida.dk 5 2026-04-22 2026-10-01
support.ida.dk 11 2026-05-31 2026-09-26
tst.ida.dk 11 2026-02-12 2026-09-19
*.tst.ida.dk 11 2026-02-12 2026-09-19
nyt.ida.dk 4 2026-04-19 2026-09-06
udv.ida.dk 1 2026-02-12 2026-02-12
*.udv.ida.dk 1 2026-02-12 2026-02-12
velkommentil.arbejdsliv.ida.dk 5 2026-05-25 2026-09-22
kontakt.arbejdsliv.ida.dk 5 2026-05-23 2026-09-20
tv.ida.dk 7 2026-06-22 2026-09-30
survey.ida.dk 5 2026-05-12 2026-09-15

Programmatic access: API GET /v1/hosts/ida.dk (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/ida.dk.