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.

100 hosts (first page) · 378 ms

HostCertsFirst seenLast seenDNS
jefferson.edu 19 2025-06-18 2026-10-06 ok
*.jefferson.edu 19 2025-06-18 2026-09-30 —
dc1-f5-r5900-01-secure-01.jefferson.edu 4 2026-08-26 2026-08-26 nxdomain
dc2-f5-r5900-01-secure-01.jefferson.edu 1 2026-09-23 2026-09-23 nxdomain
dc1-f5-r5900-01-dmz-01.jefferson.edu 2 2026-09-23 2026-09-23 nxdomain
dc2-f5-r5900-01-dmz-01.jefferson.edu 3 2026-09-23 2026-09-23 nxdomain
opic01.jefferson.edu 1 2025-11-05 2025-11-05 nxdomain
banxeadmd01.jefferson.edu 2 2025-07-24 2025-07-24 nxdomain
dc1f5secure01.jefferson.edu 4 2026-08-26 2026-08-26 nxdomain
dc2f5secure01.jefferson.edu 1 2026-09-23 2026-09-23 nxdomain
banargosp01.jefferson.edu 1 2026-06-03 2026-06-03 nxdomain
www.banargosp01.jefferson.edu 1 2026-06-03 2026-06-03 nxdomain
banssp01.jefferson.edu 2 2025-11-14 2025-11-18 —
lifeimaget01.jefferson.edu 1 2026-03-05 2026-03-05 nxdomain
dc1f5dmz01.jefferson.edu 2 2026-09-23 2026-09-23 nxdomain
dc2f5dmz01.jefferson.edu 3 2026-09-23 2026-09-23 nxdomain
aisrmedia1.jefferson.edu 2 2026-08-12 2026-08-12 ok
iam-shibboleth-vs-dc1.jefferson.edu 1 2026-04-06 2026-04-06 ok
connectvpn1.jefferson.edu 3 2025-07-23 2025-08-05 ok
styx1.jefferson.edu 3 2026-01-06 2026-01-06 nxdomain
old-styx1.jefferson.edu 3 2026-01-06 2026-01-06 nxdomain
new-styx1.jefferson.edu 3 2026-01-06 2026-01-06 nxdomain
dc1-f5-r5900-02-secure-02.jefferson.edu 4 2026-08-26 2026-08-26 nxdomain
dc2-f5-r5900-02-secure-02.jefferson.edu 1 2026-09-23 2026-09-23 nxdomain
dc1-f5-r5900-02-dmz-02.jefferson.edu 2 2026-09-23 2026-09-23 nxdomain
dc2-f5-r5900-02-dmz-02.jefferson.edu 3 2026-09-23 2026-09-23 nxdomain
banxeadmd02.jefferson.edu 2 2025-07-24 2025-07-24 —
dc1f5secure02.jefferson.edu 4 2026-08-26 2026-08-26 nxdomain
dc2f5secure02.jefferson.edu 1 2026-09-23 2026-09-23 nxdomain
dc1f5dmz02.jefferson.edu 2 2026-09-23 2026-09-23 nxdomain
dc2f5dmz02.jefferson.edu 3 2026-09-23 2026-09-23 nxdomain
iam-shibboleth-vs-dc2.jefferson.edu 1 2026-04-06 2026-04-06 ok
styx2.jefferson.edu 3 2026-01-06 2026-01-06 ok
old-styx2.jefferson.edu 3 2026-01-06 2026-01-06 nxdomain
new-styx2.jefferson.edu 3 2026-01-06 2026-01-06 nxdomain
dc1-psn03.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
dc2-psn03.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
jnj-ch-psn03.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
ajh-psn03.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
jnj-wt-psn03.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
xvm13.jefferson.edu 2 2026-03-25 2026-09-10 nxdomain
styx3.jefferson.edu 1 2026-01-06 2026-01-06 ok
stxy3.jefferson.edu 1 2026-01-06 2026-01-06 nxdomain
dc2-pan04.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
dc1-psn04.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
dc2-psn04.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
ajh-psn04.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
jnj-wt-psn04.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
banxeadmp04.jefferson.edu 1 2025-10-14 2025-10-14 nxdomain
banxeadmd05.jefferson.edu 2 2025-07-24 2025-07-24 nxdomain
jne-fch-psn05.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
jne-tch-psn06.jefferson.edu 1 2026-06-15 2026-06-15 nxdomain
banxeadmd07.jefferson.edu 2 2025-09-24 2025-09-26 nxdomain
Bannerxe07.jefferson.edu 2 2025-09-24 2025-09-26 —
banxeadmp07.jefferson.edu 1 2025-10-14 2025-10-14 nxdomain
tstPubTamLdVipA.jefferson.edu 1 2025-08-29 2025-08-29 —
tstPubTamLdVipB.jefferson.edu 1 2025-08-29 2025-08-29 —
banweb01da.jefferson.edu 2 2025-08-21 2026-09-17 ok
banjob01da.jefferson.edu 2 2025-08-21 2026-09-17 nxdomain
banssb01da.jefferson.edu 4 2025-08-12 2026-09-09 ok
banfac01da.jefferson.edu 2 2025-07-24 2026-08-21 ok
banreg01da.jefferson.edu 4 2025-08-12 2026-09-09 ok
banadm01da.jefferson.edu 2 2025-07-24 2026-08-21 ok
bansso01da.jefferson.edu 4 2025-08-12 2026-09-09 ok
idp01da.jefferson.edu 1 2026-04-06 2026-04-06 nxdomain
banext01da.jefferson.edu 4 2025-08-12 2026-09-09 ok
banstu01da.jefferson.edu 3 2025-07-24 2026-08-21 ok
bannav01da.jefferson.edu 3 2025-07-24 2026-08-21 ok
banadmin02da.jefferson.edu 1 2025-09-24 2025-09-24 nxdomain
www.banadmin02da.jefferson.edu 1 2025-09-24 2025-09-24 nxdomain
banadmin03da.jefferson.edu 2 2025-10-14 2025-10-14 nxdomain
idp04da.jefferson.edu 1 2026-04-06 2026-04-06 nxdomain
prisma.jefferson.edu 1 2026-03-12 2026-03-12 ok
rtlsrevpxy01na.jefferson.edu 1 2025-11-21 2025-11-21 ok
banweb01pa.jefferson.edu 2 2025-08-21 2026-09-17 ok
banjob01pa.jefferson.edu 3 2025-08-21 2026-09-17 nxdomain
banssb01pa.jefferson.edu 3 2025-08-21 2026-09-17 ok
banfac01pa.jefferson.edu 2 2025-08-21 2026-09-17 ok
hylviewmyc01pa.jefferson.edu 2 2025-08-08 2026-07-27 ok
Lifeimage01pa.jefferson.edu 1 2026-01-13 2026-01-13 —
banreg01pa.jefferson.edu 2 2025-08-21 2026-09-17 ok
baneth01pa.jefferson.edu 3 2025-08-21 2026-09-17 ok
hylviewecl01pa.jefferson.edu 3 2025-08-08 2026-07-27 ok
banadm01pa.jefferson.edu 2 2025-08-19 2026-09-17 ok
banesm01pa.jefferson.edu 5 2025-08-19 2026-09-17 nxdomain
sdsro01pa.jefferson.edu 3 2025-08-29 2026-08-21 nxdomain
bansso01pa.jefferson.edu 3 2025-08-21 2026-09-17 ok
idp01pa.jefferson.edu 1 2026-04-06 2026-04-06 nxdomain
ewebapp01pa.jefferson.edu 2 2026-03-24 2026-09-09 ok
inf-docker01pa.jefferson.edu 1 2026-04-27 2026-04-27 nxdomain
ethos01pa.jefferson.edu 1 2025-10-14 2025-10-14 nxdomain
www.ethos01pa.jefferson.edu 1 2025-10-14 2025-10-14 nxdomain
spisciqs01pa.jefferson.edu 1 2025-11-18 2025-11-18 nxdomain
banext01pa.jefferson.edu 2 2025-08-21 2026-09-17 ok
banstu01pa.jefferson.edu 3 2025-08-21 2026-09-17 ok
bannav01pa.jefferson.edu 2 2025-08-19 2026-09-17 ok
sdsrw01pa.jefferson.edu 3 2025-08-29 2026-08-21 nxdomain
sdsrox01pa.jefferson.edu 3 2025-08-29 2026-08-21 ok
rtlsrevpxy01pa.jefferson.edu 1 2025-11-21 2025-11-21 ok
banadmin02pa.jefferson.edu 1 2025-09-24 2025-09-24 nxdomain

Showing the first 100 hostnames — sign in with GitHub or Google to page the full list, or use the API with an API key: GET /v1/hosts/jefferson.edu.

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/jefferson.edu.