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.

23 hosts · 348 ms

HostCertsFirst seenLast seenDNS
parkit.se 20 2025-11-17 2026-09-25 ok
*.parkit.se 12 2025-11-17 2026-09-20 —
*.dev-spa.parkit.se 2 2026-06-21 2026-06-28 —
*.workload.parkit.se 2 2026-05-12 2026-05-12 —
*.tools.workload.parkit.se 2 2026-05-12 2026-05-12 —
stage.parkit.se 2 2026-08-16 2026-08-16 ok
serviceportal.parkit.se 10 2026-05-25 2026-09-20 ok
admin.parkit.se 1 2026-10-04 2026-10-04 ok
*.admin.parkit.se 2 2026-04-05 2026-09-05 —
www.admin.parkit.se 1 2026-10-04 2026-10-04 ok
help.parkit.se 9 2026-06-01 2026-09-27 ok
stage-visitor.parkit.se 2 2026-08-16 2026-08-16 ok
admin-visitor.parkit.se 1 2026-10-04 2026-10-04 ok
test-visitor.parkit.se 1 2026-08-09 2026-08-09 ok
dev-visitor.parkit.se 2 2026-06-28 2026-10-04 ok
*.tools.parkit.se 4 2026-04-29 2026-09-29 —
test.parkit.se 1 2026-08-09 2026-08-09 ok
dev.parkit.se 2 2026-06-28 2026-10-04 ok
www.parkit.se 11 2026-05-30 2026-09-25 ok
pay.parkit.se 1 2026-10-04 2026-10-04 ok
stage-pay.parkit.se 2 2026-08-16 2026-08-16 ok
test-pay.parkit.se 1 2026-08-09 2026-08-09 ok
dev-pay.parkit.se 2 2026-06-28 2026-10-04 ok

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