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) · 431 ms

HostCertsFirst seenLast seenDNS
teknion.com 9 2025-09-03 2026-09-21 ok
api01.teknion.com 12 2025-07-30 2026-09-08 ok
qa-api01.teknion.com 13 2026-04-13 2026-08-09 ok
ut-api01.teknion.com 15 2026-04-10 2026-10-04 ok
dv-api01.teknion.com 11 2026-04-13 2026-08-09 ok
app01.teknion.com 12 2025-07-30 2026-09-06 ok
tekexpe02.teknion.com 4 2025-09-03 2026-09-21 ok
api02.teknion.com 2 2025-07-30 2026-06-25 nxdomain
tfsexpress02.teknion.com 4 2025-09-03 2026-09-21 ok
citrix2.teknion.com 4 2025-06-17 2026-07-02 ok
api03.teknion.com 12 2025-07-30 2026-09-08 ok
qa-api03.teknion.com 11 2026-04-15 2026-08-12 ok
ut-api03.teknion.com 17 2026-04-10 2026-10-04 ok
dv-api03.teknion.com 11 2026-04-13 2026-08-10 ok
smtp03.teknion.com 3 2025-09-23 2026-09-18 ok
rsa3.teknion.com 8 2026-05-29 2026-09-25 ok
citrix3.teknion.com 4 2025-06-17 2026-07-02 nxdomain
rsa4.teknion.com 11 2026-05-29 2026-09-25 ok
vpnca.teknion.com 2 2026-06-25 2026-06-25 ok
biogen-emea.teknion.com 5 2026-06-06 2026-09-19 ok
nokia.teknion.com 4 2026-04-21 2026-08-14 ok
tesla.teknion.com 1 2026-10-06 2026-10-06 ok
biogen-na.teknion.com 5 2026-06-03 2026-09-16 ok
tina.teknion.com 5 2026-05-31 2026-09-28 ok
boa.teknion.com 5 2026-04-26 2026-08-19 ok
rsa.teknion.com 1 2026-03-26 2026-03-26 ok
google-data.teknion.com 5 2026-06-07 2026-09-20 ok
meta.teknion.com 5 2026-05-19 2026-09-06 ok
cschwab.teknion.com 5 2026-04-22 2026-08-15 ok
biogen-apac.teknion.com 5 2026-04-29 2026-08-22 ok
mdc.teknion.com 14 2026-05-16 2026-09-29 ok
tfsexpc.teknion.com 5 2025-08-13 2026-09-02 nxdomain
qc.teknion.com 1 2025-12-23 2025-12-23 nodata
*.qc.teknion.com 1 2025-12-23 2025-12-23 —
TRBDC1.qc.teknion.com 1 2026-04-24 2026-04-24 —
kapsarc.teknion.com 5 2026-05-02 2026-08-25 ok
preprod.teknion.com 2 2026-06-25 2026-06-25 ok
oneplace.teknion.com 11 2025-10-23 2026-08-17 ok
qa-oneplace.teknion.com 13 2026-03-02 2026-09-04 ok
ut-oneplace.teknion.com 17 2026-03-02 2026-10-04 ok
dv-oneplace.teknion.com 15 2026-03-02 2026-10-05 ok
google-workplace.teknion.com 5 2026-05-23 2026-09-05 ok
qa-appplace.teknion.com 11 2026-04-12 2026-08-09 ok
ut-appplace.teknion.com 13 2026-04-10 2026-10-04 ok
dv-appplace.teknion.com 11 2026-04-12 2026-08-09 ok
oracle.teknion.com 3 2026-07-20 2026-09-09 ok
project-eagle.teknion.com 4 2026-04-18 2026-08-11 ok
www.project-eagle.teknion.com 1 2026-04-18 2026-04-18 nxdomain
home.teknion.com 14 2025-07-30 2026-09-06 ok
qa-studionline.teknion.com 7 2026-04-13 2026-08-09 ok
ut-studionline.teknion.com 11 2026-04-10 2026-10-04 ok
dv-studionline.teknion.com 11 2026-04-13 2026-08-10 ok
qa-teknionline.teknion.com 9 2026-04-14 2026-08-10 ok
ut-teknionline.teknion.com 13 2026-04-11 2026-10-05 ok
dv-teknionline.teknion.com 7 2026-04-13 2026-08-10 ok
tekexpe.teknion.com 4 2025-09-03 2026-09-21 nxdomain
store.teknion.com 8 2026-05-16 2026-09-11 ok
demosite.teknion.com 4 2026-04-17 2026-08-10 ok
samsung.teknion.com 4 2026-04-15 2026-08-08 ok
api.teknion.com 3 2026-03-02 2026-09-04 ok
qa-api.teknion.com 2 2026-03-02 2026-09-04 ok
ut-api.teknion.com 2 2026-03-02 2026-09-04 ok
dv-api.teknion.com 2 2026-03-02 2026-09-04 ok
callback.teknion.com 4 2025-06-17 2026-07-02 nxdomain
fluidstack.teknion.com 1 2026-09-03 2026-09-03 ok
remotelabel.teknion.com 2 2025-07-30 2026-06-25 nxdomain
ut-remotelabel.teknion.com 1 2026-06-16 2026-06-16 nxdomain
intel.teknion.com 5 2026-05-27 2026-09-09 ok
marvell.teknion.com 5 2026-05-02 2026-08-25 ok
jll.teknion.com 5 2026-06-02 2026-09-15 ok
vpnml.teknion.com 2 2026-06-25 2026-06-25 ok
fm.teknion.com 5 2026-06-08 2026-09-21 ok
boozallen.teknion.com 5 2026-04-22 2026-08-15 ok
insights-innovation.teknion.com 5 2026-05-02 2026-08-25 ok
micron.teknion.com 5 2026-05-29 2026-09-11 ok
vpn.teknion.com 2 2026-06-25 2026-06-25 ok
bsn.teknion.com 1 2025-12-24 2025-12-24 nxdomain
cisco.teknion.com 5 2026-06-03 2026-09-16 ok
tandt-pep.teknion.com 5 2026-05-06 2026-08-29 ok
corp.teknion.com 9 2025-09-03 2026-09-21 nxdomain
EAPDSQL01.corp.teknion.com 1 2026-05-21 2026-05-21 —
TDC3EAUTSQL01.corp.teknion.com 2 2025-08-08 2026-07-24 —
EAPDFTAPP01.corp.teknion.com 1 2026-05-21 2026-05-21 —
TDC3EAUTFTAPP01.corp.teknion.com 2 2025-08-08 2026-07-24 —
tekcucmpub01.corp.teknion.com 3 2026-06-04 2026-06-18 nxdomain
tekcucmsub01.corp.teknion.com 3 2026-06-04 2026-06-18 nxdomain
wtpdwindchill01.corp.teknion.com 1 2026-07-21 2026-07-21 nxdomain
tekcimp01.corp.teknion.com 1 2026-06-04 2026-06-04 nxdomain
tdc3eapdecq01.corp.teknion.com 1 2026-02-20 2026-02-20 nxdomain
tdc3eattecq01.corp.teknion.com 1 2025-12-16 2025-12-16 nxdomain
tfsexpress01.corp.teknion.com 7 2025-08-13 2026-09-02 nxdomain
tekcunity01.corp.teknion.com 2 2026-06-04 2026-06-18 nxdomain
tekcucmsub02.corp.teknion.com 3 2026-06-04 2026-06-18 nxdomain
tfsexpc02.corp.teknion.com 5 2025-08-13 2026-09-02 nxdomain
tekcimp02.corp.teknion.com 1 2026-06-04 2026-06-04 nxdomain
tekcunity02.corp.teknion.com 2 2026-06-04 2026-06-18 nxdomain
tekcucmsub03.corp.teknion.com 3 2026-06-04 2026-06-18 nxdomain
tekcucmsub04.corp.teknion.com 1 2026-06-04 2026-06-04 nxdomain
tekcucmsub05.corp.teknion.com 3 2026-06-04 2026-06-18 nxdomain
tekcucmsub06.corp.teknion.com 3 2026-06-04 2026-06-18 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/teknion.com.

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/teknion.com.