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.

56 hosts · 685 ms

HostCertsFirst seenLast seenDNS
bridgeport.edu 3 2025-12-03 2025-12-29 ok
*.bridgeport.edu 7 2025-10-14 2026-09-14 —
cdn1.bridgeport.edu 5 2026-05-19 2026-07-28 ok
plesk2.bridgeport.edu 4 2026-04-14 2026-08-12 ok
koha.bridgeport.edu 10 2026-04-20 2026-08-16 ok
idastra.bridgeport.edu 2 2026-06-22 2026-06-23 nxdomain
owa.bridgeport.edu 6 2026-02-21 2026-09-29 ok
www.owa.bridgeport.edu 6 2026-02-21 2026-09-29 nxdomain
myub.bridgeport.edu 5 2026-05-28 2026-09-25 ok
ic.bridgeport.edu 4 2026-04-15 2026-08-13 ok
ubcloud.bridgeport.edu 5 2026-05-23 2026-09-20 ok
knightlife.bridgeport.edu 5 2026-05-09 2026-09-06 ok
rise.bridgeport.edu 5 2026-04-24 2026-08-22 ok
give.bridgeport.edu 3 2026-04-01 2026-09-03 ok
library-archive.bridgeport.edu 5 2026-05-05 2026-09-02 ok
staging.bridgeport.edu 2 2026-09-24 2026-09-24 ok
rise-judging.bridgeport.edu 5 2026-05-12 2026-09-09 ok
poster-judging.bridgeport.edu 4 2026-04-17 2026-08-15 ok
librarycatalog.bridgeport.edu 8 2026-04-20 2026-08-16 ok
directorysearch.bridgeport.edu 1 2026-09-10 2026-09-10 ok
cai.bridgeport.edu 5 2026-05-11 2026-09-08 ok
openapi.bridgeport.edu 2 2026-05-13 2026-05-13 ok
helpdesk.bridgeport.edu 2 2026-05-15 2026-09-28 ok
plesk.bridgeport.edu 4 2026-04-08 2026-08-06 ok
sl.bridgeport.edu 4 2026-04-17 2026-08-15 ok
nustem.bridgeport.edu 4 2026-04-15 2026-08-13 ok
myvpn.bridgeport.edu 6 2026-02-21 2026-09-29 ok
mcp.bridgeport.edu 2 2026-05-13 2026-05-13 ok
sftp.bridgeport.edu 5 2026-05-30 2026-09-27 ok
signup.bridgeport.edu 5 2026-05-21 2026-09-18 ok
transfer.bridgeport.edu 3 2026-06-05 2026-08-05 ok
autodiscover.bridgeport.edu 6 2026-02-21 2026-09-29 ok
soelabs.bridgeport.edu 4 2026-04-17 2026-08-15 ok
datatables.bridgeport.edu 5 2026-05-03 2026-08-31 ok
profiles.bridgeport.edu 4 2026-04-15 2026-08-13 ok
scholarworks.bridgeport.edu 5 2026-05-22 2026-09-19 ok
forms.bridgeport.edu 5 2026-04-24 2026-08-22 ok
webforms.bridgeport.edu 5 2026-04-24 2026-08-22 ok
provostforms.bridgeport.edu 4 2026-04-21 2026-08-19 ok
admissions.bridgeport.edu 5 2026-05-10 2026-09-05 ok
acts.bridgeport.edu 5 2026-05-06 2026-09-03 ok
events.bridgeport.edu 5 2026-05-03 2026-08-31 ok
radius.bridgeport.edu 2 2026-06-22 2026-06-23 nxdomain
www.radius.bridgeport.edu 2 2026-06-22 2026-06-23 nxdomain
webstatus.bridgeport.edu 4 2026-04-19 2026-08-17 ok
ubnet.bridgeport.edu 3 2026-06-15 2026-08-14 ok
commencement.bridgeport.edu 5 2026-05-03 2026-08-31 ok
formstest.bridgeport.edu 5 2026-05-12 2026-09-09 ok
dev.bridgeport.edu 3 2026-06-05 2026-08-05 ok
n8n-dev.bridgeport.edu 4 2026-04-15 2026-08-13 ok
formsdev.bridgeport.edu 4 2026-04-15 2026-08-13 ok
preview.bridgeport.edu 2 2026-09-24 2026-09-24 ok
dev-preview.bridgeport.edu 5 2026-04-27 2026-08-25 ok
flow.bridgeport.edu 4 2026-04-21 2026-08-19 ok
library.bridgeport.edu 5 2026-05-05 2026-09-02 ok
inventory.bridgeport.edu 5 2026-05-14 2026-09-11 ok

Programmatic access, with DNS A records: API GET /v1/hosts/bridgeport.edu (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/bridgeport.edu.