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.

11 hosts · 180 ms

HostCertsFirst seenLast seenDNS
verenigingachmea.nl 1 2025-10-21 2025-10-21 ok
publicaties.verenigingachmea.nl 4 2025-08-20 2026-08-24 ok
www.publicaties.verenigingachmea.nl 3 2025-08-20 2026-08-06 nxdomain
evenement.verenigingachmea.nl 1 2026-01-14 2026-01-14 ok
*.evenement.verenigingachmea.nl 1 2026-01-14 2026-01-14 —
f.evenement.verenigingachmea.nl 4 2026-04-16 2026-09-15 ok
www.verenigingachmea.nl 1 2025-10-21 2025-10-21 ok
acc.www.verenigingachmea.nl 1 2026-06-23 2026-06-23 ok
stg.www.verenigingachmea.nl 1 2025-10-21 2025-10-21 ok
1.tst.www.verenigingachmea.nl 1 2026-06-23 2026-06-23 ok
1.dev.www.verenigingachmea.nl 1 2026-06-23 2026-06-23 ok

Programmatic access, with DNS A records: API GET /v1/hosts/verenigingachmea.nl (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/verenigingachmea.nl.