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.

24 hosts · 295 ms

HostCertsFirst seenLast seen
beleggen.com 9 2026-05-29 2026-09-25
*.beleggen.com 9 2026-05-29 2026-09-25
web.beleggen.com 8 2026-05-04 2026-08-29
coaching.beleggen.com 5 2026-05-01 2026-09-16
ai.beleggen.com 3 2026-05-30 2026-08-07
crm-api.beleggen.com 8 2026-05-28 2026-09-23
tv-api.beleggen.com 3 2026-06-19 2026-08-27
crm.beleggen.com 10 2026-05-27 2026-09-22
scan.beleggen.com 6 2026-05-28 2026-08-27
plan.beleggen.com 4 2026-05-28 2026-08-27
admin.beleggen.com 3 2026-06-12 2026-08-20
win.beleggen.com 8 2026-05-07 2026-09-02
info.beleggen.com 11 2026-05-04 2026-08-23
vip.beleggen.com 2 2026-05-03 2026-05-03
hyros.beleggen.com 5 2026-04-29 2026-08-28
backtests.beleggen.com 5 2026-04-30 2026-09-15
meet.beleggen.com 4 2026-05-04 2026-07-12
start.beleggen.com 8 2026-05-08 2026-09-03
support.beleggen.com 5 2026-05-12 2026-09-07
vps.support.beleggen.com 2 2026-05-12 2026-05-12
www.beleggen.com 6 2026-05-17 2026-09-12
alex.beleggen.com 5 2026-04-23 2026-08-20
academy.beleggen.com 9 2026-05-22 2026-09-17
community.beleggen.com 5 2026-05-18 2026-10-03

Programmatic access: API GET /v1/hosts/beleggen.com (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/beleggen.com.