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.

42 hosts · 270 ms

HostCertsFirst seenLast seenDNS
vcu.com 9 2025-12-14 2026-08-24 ok
*.vcu.com 1 2025-12-14 2025-12-14 —
rtcma.vcu.com 3 2025-07-23 2026-07-24 nxdomain
www.rtcma.vcu.com 3 2025-07-23 2026-07-24 nxdomain
qa.vcu.com 1 2026-04-21 2026-04-21 nxdomain
www.qa.vcu.com 1 2026-04-21 2026-04-21 nxdomain
vpnsec.vcu.com 1 2026-01-24 2026-01-24 ok
www.vpnsec.vcu.com 1 2026-01-24 2026-01-24 nxdomain
cloud.e.vcu.com 2 2025-07-15 2026-07-02 ok
image.e.vcu.com 2 2026-01-21 2026-06-25 ok
click.e.vcu.com 2 2025-07-15 2026-07-04 ok
view.e.vcu.com 3 2025-07-15 2026-07-02 ok
collab-edge.expe.vcu.com 1 2026-01-15 2026-01-15 nxdomain
share.vcu.com 4 2026-04-16 2026-08-12 ok
vpnpri.vcu.com 1 2026-01-29 2026-01-29 ok
www.vpnpri.vcu.com 1 2026-01-29 2026-01-29 nxdomain
link.vcu.com 5 2026-05-08 2026-09-05 ok
securemail.vcu.com 1 2026-01-15 2026-01-15 ok
www.securemail.vcu.com 1 2026-01-15 2026-01-15 nxdomain
stcvpn.vcu.com 3 2025-09-18 2026-09-19 ok
www.stcvpn.vcu.com 3 2025-09-18 2026-09-19 nxdomain
eurvpn.vcu.com 3 2025-09-18 2026-09-19 ok
www.eurvpn.vcu.com 3 2025-09-18 2026-09-19 nxdomain
gobankless.vcu.com 17 2025-12-10 2026-09-28 ok
uat-gobankless.vcu.com 21 2025-12-09 2026-09-28 ok
*.uat-gobankless.vcu.com 20 2026-04-18 2026-09-28 —
admin.uat-gobankless.vcu.com 1 2025-12-09 2025-12-09 ok
*.gobankless.vcu.com 15 2026-04-16 2026-09-28 —
maintenance.gobankless.vcu.com 1 2025-11-30 2025-11-30 ok
admin.gobankless.vcu.com 2 2025-12-10 2025-12-10 ok
cplxpress.vcu.com 3 2026-03-13 2026-08-27 ok
www.cplxpress.vcu.com 3 2026-03-13 2026-08-27 nxdomain
testcplxpress.vcu.com 1 2026-04-15 2026-04-15 ok
www.testcplxpress.vcu.com 1 2026-04-15 2026-04-15 nxdomain
extranet.vcu.com 1 2026-01-08 2026-01-08 ok
www.extranet.vcu.com 1 2026-01-08 2026-01-08 nxdomain
devextranet.vcu.com 1 2025-12-16 2025-12-16 ok
www.devextranet.vcu.com 1 2025-12-16 2025-12-16 nxdomain
www.vcu.com 5 2026-05-18 2026-08-24 ok
synergy.vcu.com 1 2026-01-24 2026-01-24 nxdomain
www.synergy.vcu.com 1 2026-01-24 2026-01-24 nxdomain
recovery.vcu.com 3 2026-06-03 2026-08-17 ok

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