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.

17 hosts · 259 ms

HostCertsFirst seenLast seenDNS
plannedparenthood.org 14 2026-05-06 2026-10-06 ok
*.plannedparenthood.org 12 2026-05-18 2026-09-18 —
ppfa.plannedparenthood.org 5 2026-04-21 2026-09-30 ok
marketplace.plannedparenthood.org 5 2026-05-19 2026-09-16 ok
fundraise.plannedparenthood.org 16 2026-05-03 2026-08-29 ok
securemail.plannedparenthood.org 3 2025-09-16 2026-09-16 nxdomain
www.securemail.plannedparenthood.org 3 2025-09-16 2026-09-16 nxdomain
roo.plannedparenthood.org 2 2025-09-03 2026-08-04 ok
nuroo.plannedparenthood.org 2 2025-09-03 2026-08-04 ok
together.plannedparenthood.org 5 2025-06-30 2026-05-31 ok
*.together.plannedparenthood.org 5 2025-06-30 2026-05-31 —
analytics.plannedparenthood.org 5 2026-03-05 2026-09-06 nxdomain
www.analytics.plannedparenthood.org 5 2026-03-05 2026-09-06 nxdomain
ppds.plannedparenthood.org 1 2026-07-27 2026-07-27 ok
tools.plannedparenthood.org 1 2025-09-03 2025-09-03 ok
events.plannedparenthood.org 22 2026-04-24 2026-09-23 ok
act.plannedparenthood.org 22 2026-04-24 2026-09-23 ok

Programmatic access, with DNS A records: API GET /v1/hosts/plannedparenthood.org (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/plannedparenthood.org.