Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

27 hosts · 302 ms

HostCertsFirst seenLast seen
jedunn.com 18 2025-06-23 2026-10-01
*.jedunn.com 18 2025-06-23 2026-10-01
drpteamssbc01.jedunn.com 1 2025-12-04 2025-12-04
azpteamssbc01.jedunn.com 2 2025-09-10 2026-10-08
hqsbc.jedunn.com 1 2026-02-11 2026-02-11
activesync.jedunn.com 1 2026-04-03 2026-04-03
connected.jedunn.com 10 2026-05-10 2026-09-05
*.connected.jedunn.com 10 2026-05-10 2026-09-05
hybrid.jedunn.com 1 2026-04-03 2026-04-03
exchange.jedunn.com 1 2026-04-03 2026-04-03
buildingthefuture.jedunn.com 11 2026-06-01 2026-09-27
*.buildingthefuture.jedunn.com 11 2026-06-01 2026-09-27
api.jedunn.com 1 2026-05-21 2026-05-21
uat-api.jedunn.com 2 2026-01-21 2026-06-12
test-api.jedunn.com 3 2026-01-21 2026-06-12
sbx-api.jedunn.com 2 2026-01-13 2026-06-11
centennial.jedunn.com 15 2026-04-13 2026-10-07
webmail.jedunn.com 1 2026-04-03 2026-04-03
email.jedunn.com 12 2026-04-21 2026-08-17
rprm.jedunn.com 2 2026-05-26 2026-05-27
info.jedunn.com 8 2026-04-20 2026-08-16
help.jedunn.com 1 2025-12-10 2025-12-10
internal.help.jedunn.com 1 2025-12-10 2025-12-10
dev-jedunnar.jedunn.com 3 2026-02-19 2026-10-03
autodiscover.jedunn.com 1 2026-04-03 2026-04-03
jobs.jedunn.com 3 2026-03-11 2026-09-16
verify.jedunn.com 2 2026-05-13 2026-09-13

Programmatic access: API GET /v1/hosts/jedunn.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/jedunn.com.