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.

24 hosts · 428 ms

HostCertsFirst seenLast seenDNS
oregonstatecu.com 13 2026-04-28 2026-08-24 ok
*.oregonstatecu.com 13 2026-04-28 2026-08-24 —
finboa.oregonstatecu.com 1 2026-01-23 2026-01-23 nxdomain
online.oregonstatecu.com 8 2026-05-07 2026-07-06 ok
admin-secure.oregonstatecu.com 12 2026-05-16 2026-09-11 ok
auth.oregonstatecu.com 10 2026-05-16 2026-09-11 ok
servicedesk.oregonstatecu.com 2 2026-04-10 2026-04-14 ok
digital.oregonstatecu.com 12 2026-05-08 2026-09-04 ok
cudl.oregonstatecu.com 3 2025-07-09 2026-08-04 ok
webmail.oregonstatecu.com 1 2025-10-06 2025-10-06 ok
akuvo.oregonstatecu.com 4 2026-02-17 2026-09-21 ok
gp.oregonstatecu.com 1 2026-04-16 2026-04-16 ok
refer.oregonstatecu.com 5 2026-06-05 2026-10-01 ok
autodiscover.oregonstatecu.com 1 2025-10-06 2025-10-06 ok
communications.oregonstatecu.com 2 2026-02-26 2026-07-29 nodata
*.communications.oregonstatecu.com 2 2026-02-26 2026-07-29 —
solutions.oregonstatecu.com 2 2026-03-04 2026-09-01 nodata
app.solutions.oregonstatecu.com 5 2026-04-07 2026-08-17 ok
estatement.oregonstatecu.com 1 2026-02-13 2026-02-13 ok
openaccount.oregonstatecu.com 8 2026-04-13 2026-08-09 ok
finboatest.oregonstatecu.com 1 2026-01-23 2026-01-23 nxdomain
akuvotest.oregonstatecu.com 4 2026-02-17 2026-09-21 nxdomain
cinchy.oregonstatecu.com 2 2025-09-11 2026-09-29 nxdomain
apply.oregonstatecu.com 2 2026-01-30 2026-06-15 ok

Programmatic access, with DNS A records: API GET /v1/hosts/oregonstatecu.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/oregonstatecu.com.