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.

100 hosts (first page) · 267 ms

HostCertsFirst seenLast seen
telstra.com 2 2026-02-16 2026-02-16
app980.telstra.com 1 2025-11-09 2025-11-09
digicert-do-not-approve-1.telstra.com 1 2026-02-25 2026-02-25
test-dupe-cert-1.telstra.com 1 2026-06-11 2026-06-11
clb-2048-bit-test-1.telstra.com 1 2026-06-04 2026-06-04
elb-2048-bit-test-1.telstra.com 1 2026-06-11 2026-06-11
apptest-1.telstra.com 2 2026-02-25 2026-03-22
app101.telstra.com 2 2025-11-09 2025-11-09
cllxprpoacpint01.telstra.com 1 2025-07-04 2025-07-04
signon-fn1.telstra.com 1 2026-01-19 2026-01-19
app1.telstra.com 4 2026-05-19 2026-08-03
testapp1.telstra.com 1 2025-11-18 2025-11-18
hangar1.telstra.com 1 2026-04-21 2026-04-21
mobileservices1.telstra.com 2 2025-07-10 2026-07-27
newtest1.telstra.com 1 2025-11-09 2025-11-09
test-dupe-cert-2.telstra.com 1 2026-06-11 2026-06-11
clb-2048-bit-test-2.telstra.com 1 2026-06-04 2026-06-04
elb-2048-bit-test-2.telstra.com 1 2026-06-11 2026-06-11
app202.telstra.com 2 2025-11-09 2025-11-09
web02.telstra.com 7 2025-06-22 2026-08-14
www.web02.telstra.com 2 2025-08-21 2025-08-22
cllxprpoacpint02.telstra.com 1 2025-07-04 2025-07-04
signon-fn2.telstra.com 1 2026-01-19 2026-01-19
app2.telstra.com 3 2026-06-29 2026-08-03
testapp2.telstra.com 1 2025-11-18 2025-11-18
hangar2.telstra.com 1 2026-04-21 2026-04-21
prm-v2.telstra.com 2 2025-10-26 2025-11-04
prmprodproxy-v2.telstra.com 1 2025-11-04 2025-11-04
test-dupe-cert-3.telstra.com 1 2026-06-11 2026-06-11
clb-2048-bit-test-3.telstra.com 1 2026-06-04 2026-06-04
elb-2048-bit-test-3.telstra.com 1 2026-06-11 2026-06-11
test-ssp-release-4.11.13.telstra.com 2 2026-04-30 2026-04-30
app123.telstra.com 1 2025-11-07 2025-11-07
magpie3.telstra.com 1 2026-05-31 2026-05-31
na-costcenter-take3.telstra.com 2 2026-02-26 2026-03-17
signon-fn3.telstra.com 1 2026-01-19 2026-01-19
hangar3.telstra.com 1 2026-04-21 2026-04-21
app234.telstra.com 1 2025-11-07 2025-11-07
signon-fn4.telstra.com 1 2026-01-19 2026-01-19
hangar4.telstra.com 1 2026-04-21 2026-04-21
service005.telstra.com 1 2025-11-04 2025-11-04
service006.telstra.com 1 2025-11-04 2025-11-04
service007.telstra.com 1 2025-11-04 2025-11-04
app457.telstra.com 1 2025-11-09 2025-11-09
service008.telstra.com 1 2025-11-04 2025-11-04
captureNonprod.CaptureTicketingv2.ITaaS.telstra.com 1 2025-08-08 2025-08-08
test1709.DV.telstra.com 1 2025-09-17 2025-09-17
whatever-a.telstra.com 1 2025-11-06 2025-11-06
whatevernext-a.telstra.com 1 2025-11-06 2025-11-06
tba.telstra.com 27 2026-05-18 2026-10-06
*.tba.telstra.com 15 2026-07-21 2026-09-24
myworkplace-lambda.telstra.com 1 2026-05-26 2026-05-26
jasper.model.iotconga.telstra.com 2 2025-11-05 2025-11-19
jasper.iotconga.telstra.com 1 2026-01-20 2026-01-20
tccindia.telstra.com 12 2026-01-21 2026-09-08
test.tccindia.telstra.com 10 2026-02-19 2026-09-08
tapas-qa.telstra.com 2 2026-03-25 2026-03-25
sa2.thyra.telstra.com 1 2026-03-02 2026-03-02
sa.thyra.telstra.com 4 2025-08-07 2026-06-15
sa2.auth.thyra.telstra.com 2 2026-01-20 2026-01-20
sa.auth.thyra.telstra.com 4 2025-11-03 2026-06-15
sa.n.auth.thyra.telstra.com 1 2026-01-20 2026-01-20
sa.in.auth.thyra.telstra.com 4 2025-11-03 2026-06-15
sa.test.auth.thyra.telstra.com 1 2026-03-02 2026-03-02
sa2.ext.auth.thyra.telstra.com 2 2026-01-20 2026-01-20
sa2.n.ext.auth.thyra.telstra.com 1 2026-01-20 2026-01-20
sa2.v.ext.auth.thyra.telstra.com 1 2026-01-20 2026-01-20
sa.v.auth.thyra.telstra.com 1 2026-01-20 2026-01-20
sa2.ex.auth.thyra.telstra.com 3 2026-01-20 2026-06-15
sa.ex.auth.thyra.telstra.com 4 2025-11-03 2026-06-15
sa2.n.ex.auth.thyra.telstra.com 1 2026-01-20 2026-01-20
sa2.v.ex.auth.thyra.telstra.com 1 2026-01-20 2026-01-20
Techmahindra2.vdi.thyra.telstra.com 2 2026-04-19 2026-04-19
Techmahindra3.vdi.thyra.telstra.com 6 2025-07-30 2026-08-12
infosys3.vdi.thyra.telstra.com 2 2025-12-08 2025-12-08
TechMahindra.vdi.thyra.telstra.com 4 2025-08-28 2026-09-03
telstra.vdi.thyra.telstra.com 6 2025-07-08 2026-07-27
telkomtelstra.vdi.thyra.telstra.com 8 2025-09-02 2026-09-16
tsa.vdi.thyra.telstra.com 4 2025-06-16 2026-06-24
aztec.vdi.thyra.telstra.com 2 2026-06-15 2026-06-15
probe.vdi.thyra.telstra.com 4 2025-08-21 2026-09-07
accenture.vdi.thyra.telstra.com 10 2025-06-11 2026-07-27
teleperf.vdi.thyra.telstra.com 2 2026-06-09 2026-06-09
teletech.vdi.thyra.telstra.com 4 2025-07-02 2026-07-15
ibm.vdi.thyra.telstra.com 2 2026-01-22 2026-01-22
Techmahindra2.n.vdi.thyra.telstra.com 1 2026-04-19 2026-04-19
Techmahindra3.n.vdi.thyra.telstra.com 3 2025-07-30 2026-08-04
infosys3.n.vdi.thyra.telstra.com 1 2025-12-08 2025-12-08
TechMahindra.n.vdi.thyra.telstra.com 2 2025-09-01 2026-09-01
telstra.n.vdi.thyra.telstra.com 3 2025-07-09 2026-07-27
telkomtelstra.n.vdi.thyra.telstra.com 3 2025-09-03 2026-09-16
tsa.n.vdi.thyra.telstra.com 2 2025-06-17 2026-06-24
aztec.n.vdi.thyra.telstra.com 1 2026-06-15 2026-06-15
probe.n.vdi.thyra.telstra.com 2 2025-08-22 2026-09-07
accenture.n.vdi.thyra.telstra.com 5 2025-06-11 2026-07-27
teleperf.n.vdi.thyra.telstra.com 1 2026-06-09 2026-06-09
teletech.n.vdi.thyra.telstra.com 2 2025-07-03 2026-07-15
ibm.n.vdi.thyra.telstra.com 1 2026-01-22 2026-01-22
asurion.n.vdi.thyra.telstra.com 2 2025-07-28 2026-08-03
wipro.n.vdi.thyra.telstra.com 1 2026-06-16 2026-06-16

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/telstra.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/telstra.com.