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.

6 hosts · 327 ms

HostCertsFirst seenLast seen
cv.se 2 2025-11-10 2025-11-11
*.cv.se 1 2025-11-11 2025-11-11
link.cv.se 4 2025-11-03 2026-10-04
icu.cv.se 5 2025-10-23 2026-09-23
preview-icu.cv.se 5 2025-10-23 2026-09-23
www.cv.se 2 2025-11-10 2025-11-11

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