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.

38 hosts · 254 ms

HostCertsFirst seenLast seen
pennlive.com 15 2025-09-22 2026-09-25
*.pennlive.com 14 2025-08-03 2026-09-25
d323.pennlive.com 1 2026-01-11 2026-01-11
i939.pennlive.com 1 2026-02-05 2026-02-05
slc.pennlive.com 1 2025-09-30 2025-09-30
ead.pennlive.com 2 2026-02-28 2026-07-16
placead.pennlive.com 2 2025-07-25 2026-07-22
subscribe.pennlive.com 16 2026-04-27 2026-10-06
greatestgame.pennlive.com 4 2026-05-04 2026-09-01
hiring.pennlive.com 3 2026-06-16 2026-09-05
i.pennlive.com 8 2026-05-01 2026-09-18
link.pennlive.com 6 2026-06-03 2026-10-01
l.pennlive.com 4 2026-04-13 2026-08-09
reader.pn.pennlive.com 1 2025-10-30 2025-10-30
advancelocalseo.pennlive.com 6 2026-05-13 2026-07-18
app.pennlive.com 1 2026-02-23 2026-02-23
pennstateapp.pennlive.com 2 2026-04-01 2026-09-02
jobs.pennlive.com 10 2026-04-26 2026-10-05
topics.pennlive.com 10 2026-05-01 2026-10-07
ezads.pennlive.com 1 2025-12-04 2025-12-04
classifieds.pennlive.com 3 2025-08-01 2026-08-20
foreclosures.pennlive.com 1 2026-01-11 2026-01-11
archives.pennlive.com 2 2025-09-12 2026-08-13
autos.pennlive.com 2 2026-05-09 2026-09-21
partnerships.pennlive.com 20 2026-05-01 2026-08-27
obits.pennlive.com 6 2026-05-07 2026-09-02
mobileobits.pennlive.com 8 2026-05-07 2026-09-02
events.pennlive.com 4 2026-04-19 2026-08-17
i-uat.pennlive.com 5 2026-05-01 2026-09-18
topics-uat.pennlive.com 10 2026-05-01 2026-10-07
connect-uat.pennlive.com 10 2026-05-01 2026-10-07
www-uat.pennlive.com 10 2026-05-01 2026-10-07
connect.pennlive.com 10 2026-05-01 2026-10-07
myaccount.pennlive.com 16 2026-04-27 2026-10-06
slc-dev.pennlive.com 1 2025-09-30 2025-09-30
www.pennlive.com 10 2026-05-01 2026-10-07
www-sandbox.pennlive.com 5 2026-05-01 2026-09-18
harrisburguniversity.pennlive.com 4 2026-05-03 2026-08-31

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