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.

26 hosts · 264 ms

HostCertsFirst seenLast seen
planity.com 5 2025-08-19 2026-07-20
partenaire.planity.com 8 2026-05-11 2026-09-07
mag.planity.com 5 2026-05-29 2026-09-11
www.mag.planity.com 5 2026-05-29 2026-09-11
newsroom.planity.com 5 2026-05-17 2026-09-09
www.newsroom.planity.com 5 2026-05-10 2026-09-02
origin.planity.com 5 2026-05-15 2026-09-14
admin.planity.com 2 2026-02-24 2026-07-12
info.planity.com 10 2026-05-07 2026-09-02
www.info.planity.com 4 2026-07-15 2026-09-12
hello.planity.com 4 2026-05-07 2026-05-07
pro.planity.com 1 2026-01-06 2026-01-06
webview.pro.planity.com 1 2026-06-09 2026-06-09
partner.planity.com 13 2026-05-19 2026-09-14
helpdocs.planity.com 5 2026-03-03 2026-08-03
nuances.planity.com 1 2025-12-11 2025-12-11
emlinks.planity.com 1 2026-06-24 2026-06-24
careers.planity.com 10 2026-04-19 2026-09-24
ambassadeurs.planity.com 8 2026-05-04 2026-08-30
t.planity.com 3 2025-10-30 2026-09-30
*.market.planity.com 1 2026-10-01 2026-10-01
contact.market.planity.com 1 2026-06-09 2026-06-09
support.planity.com 5 2026-05-01 2026-08-29
dev.planity.com 7 2026-06-02 2026-09-28
webview.planity.com 1 2026-01-04 2026-01-04
www.planity.com 7 2025-08-19 2026-09-30

Programmatic access: API GET /v1/hosts/planity.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/planity.com.