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.

16 hosts · 263 ms

HostCertsFirst seenLast seenDNS
campusfederal.org 15 2025-10-09 2026-10-07 ok
*.campusfederal.org 15 2025-10-09 2026-10-07 —
65.5.76.30.campusfederal.org 3 2026-04-05 2026-06-08 nxdomain
viewsecurity2.campusfederal.org 3 2026-04-05 2026-06-08 nxdomain
mortgage.campusfederal.org 1 2026-05-23 2026-05-23 ok
onlinebanking.campusfederal.org 6 2026-04-15 2026-08-11 ok
vdi.campusfederal.org 3 2026-04-05 2026-06-08 ok
www.vdi.campusfederal.org 3 2026-04-05 2026-06-08 nxdomain
onlinebanking-admin.campusfederal.org 8 2026-04-15 2026-08-11 ok
info.campusfederal.org 3 2025-08-26 2026-09-25 ok
onlinebanking-ip.campusfederal.org 6 2026-04-15 2026-08-11 ok
apex.campusfederal.org 1 2025-10-20 2025-10-20 ok
www.apex.campusfederal.org 1 2025-10-20 2025-10-20 nxdomain
lobby.campusfederal.org 3 2025-10-16 2026-09-03 ok
www.lobby.campusfederal.org 3 2025-10-16 2026-09-03 nxdomain
homeequity.campusfederal.org 2 2025-08-17 2026-08-03 ok

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