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.

30 hosts · 281 ms

HostCertsFirst seenLast seenDNS
skansen.se 12 2025-12-09 2026-09-21 ok
*.skansen.se 7 2025-12-09 2026-09-20 —
webserver2.skansen.se 1 2025-12-08 2025-12-08 nxdomain
www.webserver2.skansen.se 1 2025-12-08 2025-12-08 nxdomain
jobb.skansen.se 6 2026-05-18 2026-09-30 ok
byggnadsvard.skansen.se 3 2026-06-09 2026-08-10 ok
service.skansen.se 12 2026-06-03 2026-09-30 ok
ticketsonline.skansen.se 9 2026-06-01 2026-09-27 ok
staging.skansen.se 5 2026-05-02 2026-08-30 ok
swish.skansen.se 2 2025-12-09 2025-12-16 ok
www.swish.skansen.se 1 2025-12-09 2025-12-09 nxdomain
portal.skansen.se 2 2025-12-09 2025-12-16 ok
www.portal.skansen.se 1 2025-12-09 2025-12-09 nxdomain
firewall.skansen.se 1 2025-12-08 2025-12-08 nxdomain
www.firewall.skansen.se 1 2025-12-08 2025-12-08 nxdomain
bergbanan.skansen.se 9 2026-05-22 2026-09-17 ok
demo.skansen.se 1 2025-12-08 2025-12-08 nxdomain
www.demo.skansen.se 1 2025-12-08 2025-12-08 nxdomain
testprodukter.skansen.se 10 2026-04-29 2026-08-25 ok
bokas.skansen.se 4 2026-04-13 2026-08-11 ok
tickets.skansen.se 9 2026-05-26 2026-09-21 ok
insikt.skansen.se 1 2025-12-09 2025-12-09 nxdomain
www.insikt.skansen.se 1 2025-12-09 2025-12-09 nxdomain
passerkort.skansen.se 2 2025-12-09 2025-12-16 ok
www.passerkort.skansen.se 1 2025-12-09 2025-12-09 nxdomain
biljett.skansen.se 5 2026-06-04 2026-10-02 ok
www.skansen.se 5 2026-05-24 2026-09-21 ok
serix.skansen.se 2 2025-12-09 2025-12-16 nxdomain
www.serix.skansen.se 1 2025-12-09 2025-12-09 nxdomain
quiz.skansen.se 5 2026-04-28 2026-08-26 ok

Programmatic access, with DNS A records: API GET /v1/hosts/skansen.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/skansen.se.