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.

87 hosts · 472 ms

HostCertsFirst seenLast seenDNS
regents.ac.uk 14 2026-04-13 2026-08-15 ok
proactestapp01.regents.ac.uk 4 2026-04-16 2026-08-14 nxdomain
rdsweb.regents.ac.uk 8 2026-02-26 2026-10-01 nxdomain
lib.regents.ac.uk 4 2026-06-05 2026-10-01 ok
hub.regents.ac.uk 5 2026-04-20 2026-10-05 ok
beyond.regents.ac.uk 4 2026-06-05 2026-10-01 ok
blackboard.regents.ac.uk 22 2025-06-16 2026-08-22 ok
externalblackboard.regents.ac.uk 22 2025-06-16 2026-08-22 ok
timetable.regents.ac.uk 5 2026-07-15 2026-08-03 nxdomain
testacme.regents.ac.uk 5 2026-06-12 2026-08-17 nxdomain
cloudflare.regents.ac.uk 8 2026-04-18 2026-08-15 ok
store.regents.ac.uk 16 2026-05-27 2026-09-23 ok
remote.regents.ac.uk 3 2026-06-12 2026-08-17 ok
boutique.regents.ac.uk 13 2026-05-16 2026-09-27 ok
learn-staging.regents.ac.uk 22 2025-06-16 2026-08-20 ok
printing.regents.ac.uk 5 2026-06-02 2026-09-30 ok
mktg.regents.ac.uk 5 2026-05-12 2026-09-07 ok
wifi.regents.ac.uk 9 2026-02-24 2026-09-03 nxdomain
ask.regents.ac.uk 11 2026-06-01 2026-09-27 ok
servicedesk.regents.ac.uk 10 2026-05-25 2026-09-22 ok
forms.servicedesk.regents.ac.uk 10 2026-04-16 2026-08-15 ok
mail.regents.ac.uk 11 2026-04-17 2026-09-30 ok
studentunion.regents.ac.uk 4 2026-05-21 2026-07-30 ok
www.studentunion.regents.ac.uk 4 2026-05-21 2026-07-30 ok
gpvpn.regents.ac.uk 3 2026-06-12 2026-08-17 ok
learn.regents.ac.uk 22 2025-06-16 2026-08-22 ok
cyberlearn.regents.ac.uk 3 2025-09-01 2026-08-02 ok
*.cyberlearn.regents.ac.uk 3 2025-09-01 2026-08-02 —
cloud.info.regents.ac.uk 3 2025-08-24 2026-08-11 ok
image.info.regents.ac.uk 5 2025-06-28 2026-09-21 ok
click.info.regents.ac.uk 3 2025-08-24 2026-08-11 ok
view.info.regents.ac.uk 3 2025-08-24 2026-08-11 ok
go.regents.ac.uk 4 2026-04-11 2026-08-07 ok
sso.regents.ac.uk 5 2026-04-26 2026-08-24 ok
fleetmanager.regents.ac.uk 6 2026-05-06 2026-09-02 nxdomain
register.regents.ac.uk 5 2026-06-02 2026-09-30 ok
askqr.regents.ac.uk 5 2026-04-21 2026-08-17 ok
studentdocs.regents.ac.uk 4 2026-06-06 2026-10-03 ok
api.studentdocs.regents.ac.uk 4 2026-06-06 2026-10-03 ok
portal.studentdocs.regents.ac.uk 4 2026-04-09 2026-08-08 ok
admin.studentdocs.regents.ac.uk 4 2026-04-09 2026-08-07 ok
uat.studentdocs.regents.ac.uk 6 2026-06-03 2026-10-02 ok
api.uat.studentdocs.regents.ac.uk 4 2026-06-04 2026-10-04 ok
admin.uat.studentdocs.regents.ac.uk 4 2026-06-06 2026-10-03 ok
gateway.uat.studentdocs.regents.ac.uk 4 2026-06-03 2026-10-02 ok
verify.uat.studentdocs.regents.ac.uk 5 2026-06-05 2026-10-02 ok
smartverify.uat.studentdocs.regents.ac.uk 5 2026-06-03 2026-10-02 ok
gateway.studentdocs.regents.ac.uk 4 2026-06-06 2026-10-05 ok
verify.studentdocs.regents.ac.uk 3 2026-06-07 2026-08-06 ok
smartverify.studentdocs.regents.ac.uk 3 2026-06-07 2026-08-06 ok
rds.regents.ac.uk 8 2026-02-26 2026-10-01 ok
adfs.regents.ac.uk 5 2026-04-23 2026-08-21 nxdomain
proactis.regents.ac.uk 4 2026-04-16 2026-08-14 nxdomain
wams.regents.ac.uk 3 2026-05-28 2026-08-11 ok
tracking.press.regents.ac.uk 1 2026-09-16 2026-09-16 ok
assets.regents.ac.uk 6 2026-08-10 2026-08-11 ok
remote-its.regents.ac.uk 3 2026-06-12 2026-08-17 ok
epayments.regents.ac.uk 20 2026-05-31 2026-09-26 ok
mta-sts.regents.ac.uk 2 2026-02-19 2026-07-07 ok
status.regents.ac.uk 5 2026-05-13 2026-09-10 ok
news.regents.ac.uk 10 2026-05-01 2026-08-28 ok
libcat.regents.ac.uk 5 2026-05-30 2026-09-28 ok
connect.regents.ac.uk 5 2026-06-02 2026-09-30 ok
test01.net.regents.ac.uk 2 2026-05-09 2026-05-09 nxdomain
sliwowica.net.regents.ac.uk 3 2026-05-06 2026-08-17 nxdomain
flowmon.net.regents.ac.uk 2 2026-05-09 2026-05-09 nxdomain
netserver.net.regents.ac.uk 5 2026-06-03 2026-10-01 nxdomain
monitor.net.regents.ac.uk 5 2026-05-09 2026-10-01 nxdomain
librenms.net.regents.ac.uk 4 2026-07-17 2026-10-01 nodata
status.net.regents.ac.uk 4 2026-04-10 2026-08-08 ok
reset.regents.ac.uk 5 2026-06-02 2026-09-30 ok
it.regents.ac.uk 5 2026-04-30 2026-08-26 ok
kit.regents.ac.uk 4 2026-04-12 2026-08-08 ok
estudent.regents.ac.uk 19 2026-04-17 2026-10-03 ok
reportandsupport.regents.ac.uk 2 2025-06-11 2026-05-12 ok
test.regents.ac.uk 10 2026-05-11 2026-09-30 ok
learn-test.regents.ac.uk 23 2025-06-16 2026-08-20 ok
estudent-test.regents.ac.uk 9 2026-04-17 2026-09-30 ok
timetabletest.regents.ac.uk 9 2026-06-24 2026-09-13 nxdomain
rtt.regents.ac.uk 4 2026-06-05 2026-10-01 ok
su.regents.ac.uk 4 2026-04-11 2026-08-07 ok
estudentdev.regents.ac.uk 9 2026-04-17 2026-09-30 ok
www.regents.ac.uk 14 2026-04-13 2026-08-15 ok
zabbix.regents.ac.uk 4 2026-04-17 2026-08-15 ok
estudentplay.regents.ac.uk 16 2026-06-02 2026-10-02 ok
rdsgateway.regents.ac.uk 8 2026-02-26 2026-10-01 ok
repository.regents.ac.uk 3 2026-07-17 2026-09-15 ok

Programmatic access, with DNS A records: API GET /v1/hosts/regents.ac.uk (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/regents.ac.uk.