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.

15 hosts · 227 ms

HostCertsFirst seenLast seen
hegnar.no 6 2026-05-16 2026-09-30
*.hegnar.no 6 2026-05-16 2026-09-30
*.1.hegnar.no 5 2026-05-16 2026-09-13
hegnarmedia.hegnar.no 5 2026-04-25 2026-08-18
www.hegnarmedia.hegnar.no 5 2026-04-29 2026-08-22
bokklubb.hegnar.no 8 2026-04-17 2026-09-09
wg.hegnar.no 2 2025-07-29 2026-07-06
www.wg.hegnar.no 1 2026-07-06 2026-07-06
bokhandel.hegnar.no 14 2026-05-16 2026-09-26
nytt.forum.hegnar.no 6 2026-05-16 2026-09-30
webedition.hegnar.no 2 2025-07-29 2026-06-30
www.webedition.hegnar.no 1 2026-06-30 2026-06-30
videoproduksjon.hegnar.no 5 2026-05-07 2026-08-30
www.videoproduksjon.hegnar.no 5 2026-05-06 2026-08-29
*.s.hegnar.no 5 2026-05-16 2026-09-13

Programmatic access: API GET /v1/hosts/hegnar.no (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/hegnar.no.