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.

41 hosts · 177 ms

HostCertsFirst seenLast seen
regionkalmar.se 6 2025-10-08 2026-10-01
*.regionkalmar.se 6 2025-10-08 2026-10-01
guestportal-01.regionkalmar.se 1 2025-10-30 2025-10-30
mx1.regionkalmar.se 1 2026-01-14 2026-01-14
guestportal-02.regionkalmar.se 3 2026-05-15 2026-08-21
flowscape2.regionkalmar.se 1 2025-12-03 2025-12-03
extmdm2.regionkalmar.se 2 2025-09-10 2026-09-07
mx2.regionkalmar.se 1 2026-01-14 2026-01-14
rklvpn-qa.regionkalmar.se 1 2026-02-20 2026-02-20
videolab.regionkalmar.se 2 2025-09-30 2026-09-17
c.videolab.regionkalmar.se 2 2025-09-30 2026-09-17
teamsconn.videolab.regionkalmar.se 2 2025-09-30 2026-09-17
reservwebb.regionkalmar.se 1 2026-02-24 2026-02-24
rpm-prod.regionkalmar.se 1 2026-09-02 2026-09-02
smorgasbord.regionkalmar.se 3 2026-02-27 2026-08-19
testsmorgasbord.regionkalmar.se 2 2026-02-27 2026-08-19
sip.privatvardgivare.regionkalmar.se 1 2026-02-03 2026-02-03
vdi.regionkalmar.se 3 2025-10-08 2026-09-07
mdmmail.regionkalmar.se 4 2025-08-26 2026-08-21
rdmobil.regionkalmar.se 1 2025-11-14 2025-11-14
mdm.regionkalmar.se 2 2025-08-20 2026-08-05
rpm.regionkalmar.se 1 2026-04-23 2026-04-23
app.rpm.regionkalmar.se 1 2026-04-23 2026-04-23
infoscreen.regionkalmar.se 1 2026-02-10 2026-02-10
smartsign.regionkalmar.se 1 2026-04-22 2026-04-22
webcon.regionkalmar.se 1 2026-02-03 2026-02-03
video.regionkalmar.se 2 2025-11-11 2025-11-14
c1.video.regionkalmar.se 2 2025-11-11 2025-11-14
c2.video.regionkalmar.se 2 2025-11-11 2025-11-14
c.video.regionkalmar.se 2 2025-11-11 2025-11-14
teamsconn.video.regionkalmar.se 2 2025-11-11 2025-11-14
sip.regionkalmar.se 1 2026-02-03 2026-02-03
mp.regionkalmar.se 3 2025-08-12 2026-08-10
mdmapp.regionkalmar.se 3 2025-08-26 2026-08-20
tears.regionkalmar.se 2 2026-02-27 2026-09-07
sts.regionkalmar.se 1 2025-10-21 2025-10-21
rklvpn-test.regionkalmar.se 1 2026-02-23 2026-02-23
mdmtest.regionkalmar.se 2 2026-03-25 2026-10-07
infoscreentest.regionkalmar.se 1 2026-01-27 2026-01-27
sentrytest.regionkalmar.se 2 2026-03-25 2026-05-04
rklvpn-dev.regionkalmar.se 1 2026-02-23 2026-02-23

Programmatic access: API GET /v1/hosts/regionkalmar.se (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/regionkalmar.se.