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.

31 hosts · 201 ms

HostCertsFirst seenLast seen
regionostergotland.se 4 2025-08-11 2026-08-06
*.regionostergotland.se 2 2025-08-11 2026-08-06
guestportal1.regionostergotland.se 1 2026-05-19 2026-05-19
pexipext1.regionostergotland.se 1 2025-11-18 2025-11-18
mailgw1.regionostergotland.se 1 2026-05-11 2026-05-11
guestportal2.regionostergotland.se 1 2026-05-19 2026-05-19
pexipext2.regionostergotland.se 1 2025-11-18 2025-11-18
mailgw2.regionostergotland.se 1 2026-05-11 2026-05-11
pexipext3.regionostergotland.se 1 2025-11-18 2025-11-18
pexipext4.regionostergotland.se 1 2025-11-18 2025-11-18
evolutioneservice.regionostergotland.se 1 2025-12-09 2025-12-09
edge.regionostergotland.se 2 2025-08-20 2026-08-17
sommarvikarie.regionostergotland.se 6 2026-05-21 2026-10-03
vardgivare.regionostergotland.se 1 2026-02-06 2026-02-06
vdi.regionostergotland.se 1 2026-06-05 2026-06-05
sakrameddelanden.regionostergotland.se 1 2025-10-28 2025-10-28
blaappen.regionostergotland.se 5 2026-05-09 2026-09-06
video.regionostergotland.se 1 2025-11-18 2025-11-18
autodiscover.regionostergotland.se 1 2025-12-11 2025-12-11
ps.regionostergotland.se 2 2025-09-01 2026-08-26
tillfalligwebbplats.regionostergotland.se 1 2026-02-06 2026-02-06
extews.regionostergotland.se 1 2025-12-11 2025-12-11
etjansterdiariet.regionostergotland.se 2 2025-10-14 2026-09-29
medicinskabiblioteket.regionostergotland.se 1 2025-11-21 2025-11-21
admin.medicinskabiblioteket.regionostergotland.se 1 2025-11-21 2025-11-21
evolutioneservicetest.regionostergotland.se 1 2025-12-09 2025-12-09
videotest.regionostergotland.se 1 2025-09-09 2025-09-09
etjansterdiariettest.regionostergotland.se 1 2025-10-14 2025-10-14
pexipexttest.regionostergotland.se 2 2025-09-02 2025-09-09
pexipext.regionostergotland.se 1 2025-11-18 2025-11-18
www.regionostergotland.se 1 2026-02-06 2026-02-06

Programmatic access: API GET /v1/hosts/regionostergotland.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/regionostergotland.se.