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.

26 hosts · 195 ms

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HostCertsFirst seenLast seen
hemso.se 5 2026-05-11 2026-10-16
*.hemso.se 1 2026-05-11 2026-05-11
url3156.hemso.se 2 2026-10-06 2026-10-06
campus-tensta.hemso.se 4 2026-06-19 2026-10-16
*.ad.hemso.se 1 2026-10-07 2026-10-07
fpm.ad.hemso.se 3 2025-09-02 2026-10-07
hemtag.hemso.se 4 2026-06-19 2026-10-16
api.hemso.se 5 2026-05-17 2026-09-14
test3.api.hemso.se 2 2026-10-08 2026-10-08
test.api.hemso.se 5 2026-05-17 2026-09-14
dev.api.hemso.se 5 2026-05-17 2026-09-14
portal.hemso.se 5 2026-05-06 2026-09-03
test4.portal.hemso.se 1 2026-10-08 2026-10-08
test.portal.hemso.se 5 2026-05-05 2026-09-02
dev.portal.hemso.se 6 2026-05-05 2026-09-03
www.portal.hemso.se 7 2026-05-05 2026-09-03
novum.hemso.se 4 2026-06-19 2026-10-16
campus-tensta-en.hemso.se 4 2026-06-19 2026-10-16
novum-en.hemso.se 4 2026-06-19 2026-10-16
st-larsparken.hemso.se 4 2026-06-19 2026-10-16
join.hemso.se 3 2026-02-21 2026-09-16
fastighet.hemso.se 1 2026-01-28 2026-01-28
*.fastighet.hemso.se 5 2026-01-28 2026-10-11
test.fastighet.hemso.se 4 2026-06-15 2026-10-13
ogonsjukhuset.hemso.se 4 2026-06-19 2026-10-16
www.hemso.se 4 2026-06-19 2026-10-16

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