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.

11 hosts · 229 ms

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HostCertsFirst seenLast seen
lemontree.nl 17 2026-04-26 2026-10-06
*.lemontree.nl 12 2026-04-26 2026-10-06
lmtunifw01.lemontree.nl 2 2026-04-09 2026-09-25
lmtalpfw01.lemontree.nl 3 2026-04-09 2026-09-28
monitoring.lemontree.nl 7 2026-03-18 2026-09-28
scepman.pki.lemontree.nl 3 2026-02-26 2026-10-10
link.lemontree.nl 5 2026-05-21 2026-09-18
onedesk.lemontree.nl 7 2026-06-03 2026-09-29
portal.lemontree.nl 4 2026-02-28 2026-10-13
mta-sts.lemontree.nl 3 2026-04-19 2026-09-08
www.lemontree.nl 5 2026-05-17 2026-09-13

Programmatic access: API GET /v1/hosts/lemontree.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/lemontree.nl.