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) · 208 ms

HostCertsFirst seenLast seen
telstra.com.au 2 2026-02-16 2026-02-16
test-dupe-cert-1.telstra.com.au 1 2026-06-12 2026-06-12
hny9-ea-lbs-0001.telstra.com.au 3 2025-08-28 2026-09-16
pny9-ea-lbs-0001.telstra.com.au 2 2025-07-24 2026-08-04
exy9-ea-lbs-0001.telstra.com.au 2 2025-08-25 2026-09-09
signon-fn1.telstra.com.au 1 2026-01-19 2026-01-19
app1.telstra.com.au 1 2026-09-23 2026-09-23
test-dupe-cert-2.telstra.com.au 1 2026-06-12 2026-06-12
pny9-ea-lbs-0002.telstra.com.au 2 2025-08-04 2026-08-07
signon-fn2.telstra.com.au 1 2026-01-19 2026-01-19
test2.telstra.com.au 3 2026-01-24 2026-10-08
astest2.telstra.com.au 1 2026-02-26 2026-02-26
test-dupe-cert-3.telstra.com.au 1 2026-06-12 2026-06-12
signon-fn3.telstra.com.au 1 2026-01-19 2026-01-19
test3.telstra.com.au 3 2026-04-29 2026-10-08
signon-fn4.telstra.com.au 1 2026-01-19 2026-01-19
shopfront4.telstra.com.au 3 2025-08-04 2026-08-17
shopfront5.telstra.com.au 3 2025-09-10 2026-09-22
media.telstra.com.au 1 2026-01-21 2026-01-21
wa1.media.telstra.com.au 1 2026-01-21 2026-01-21
wa2.media.telstra.com.au 1 2026-01-21 2026-01-21
uat2.media.telstra.com.au 1 2026-01-21 2026-01-21
dev2.media.telstra.com.au 1 2026-01-21 2026-01-21
wa3.media.telstra.com.au 1 2026-01-21 2026-01-21
uat3.media.telstra.com.au 1 2026-01-21 2026-01-21
authorhf.media.telstra.com.au 1 2026-01-21 2026-01-21
author.media.telstra.com.au 1 2026-01-21 2026-01-21
www.media.telstra.com.au 1 2026-01-21 2026-01-21
wa1.www.media.telstra.com.au 1 2026-01-21 2026-01-21
wa2.www.media.telstra.com.au 1 2026-01-21 2026-01-21
wa3.www.media.telstra.com.au 1 2026-01-21 2026-01-21
dynamicmedia.telstra.com.au 5 2025-07-22 2026-08-03
stage.dynamicmedia.telstra.com.au 5 2025-07-22 2026-08-03
tesa.telstra.com.au 1 2026-02-18 2026-02-18
vista.telstra.com.au 1 2026-09-03 2026-09-03
nonprod.vista.telstra.com.au 2 2026-08-14 2026-08-14
aida-fd.poc.smb.telstra.com.au 1 2026-05-28 2026-05-28
mrf-fd.poc.smb.telstra.com.au 1 2026-05-28 2026-05-28
ums-fd.poc.smb.telstra.com.au 1 2026-05-28 2026-05-28
sme.poc.smb.telstra.com.au 1 2026-05-28 2026-05-28
ivr-test-dash.poc.smb.telstra.com.au 1 2026-05-28 2026-05-28
poc-ums.poc.smb.telstra.com.au 1 2026-05-28 2026-05-28
mob.telstra.com.au 4 2025-06-22 2025-12-05
tesa-sb.telstra.com.au 1 2026-06-18 2026-06-18
hub.telstra.com.au 2 2025-12-04 2025-12-04
dev1.hub.telstra.com.au 2 2025-12-04 2025-12-04
uat2.hub.telstra.com.au 2 2025-12-04 2025-12-04
dev2.hub.telstra.com.au 2 2025-12-04 2025-12-04
uat3.hub.telstra.com.au 2 2025-12-04 2025-12-04
chris-stac.telstra.com.au 4 2025-11-28 2026-03-19
san1.chris-stac.telstra.com.au 4 2025-11-28 2026-03-19
app-45.chris-stac.telstra.com.au 2 2025-12-03 2026-03-19
mnc.telstra.com.au 2 2025-07-21 2026-07-28
ultrasync.telstra.com.au 2 2026-05-11 2026-07-28
*.ultrasync.telstra.com.au 2 2026-05-11 2026-07-28
fn1.mppvc.telstra.com.au 1 2025-12-17 2025-12-17
fn2.mppvc.telstra.com.au 1 2025-12-17 2025-12-17
prod.mppvc.telstra.com.au 1 2025-12-17 2025-12-17
yourservicerequest.stayconnected.telstra.com.au 1 2026-02-05 2026-02-05
myid.telstra.com.au 4 2025-08-13 2026-08-14
selfcare.epod.telstra.com.au 2 2025-07-08 2026-07-12
selfcare-pp.epod.telstra.com.au 2 2025-07-08 2026-07-12
customer-api-prod.telstra.com.au 2 2025-09-22 2026-09-25
virtual-assistant-sf-apis-non-prod.telstra.com.au 1 2025-06-11 2025-06-11
test-stac-prod-ssp-prod.telstra.com.au 1 2026-03-03 2026-03-03
virtual-assistant-sf-apis-prod.telstra.com.au 1 2025-06-11 2025-06-11
vdm.b2bprod.telstra.com.au 3 2025-10-17 2026-06-22
preprod.telstra.com.au 5 2025-06-29 2026-10-08
fn1.myid-nonprod.telstra.com.au 4 2025-08-04 2026-10-07
fn2.myid-nonprod.telstra.com.au 4 2025-08-12 2026-10-07
fn3.myid-nonprod.telstra.com.au 3 2025-07-30 2026-08-14
sdev6.myid-nonprod.telstra.com.au 4 2025-07-06 2026-10-06
sit.myid-nonprod.telstra.com.au 5 2025-07-06 2026-10-06
svt.myid-nonprod.telstra.com.au 4 2025-08-12 2026-09-30
fn1.private-api-nonprod.telstra.com.au 4 2025-07-31 2026-08-24
fn2.private-api-nonprod.telstra.com.au 4 2025-07-31 2026-08-24
fn3.private-api-nonprod.telstra.com.au 4 2025-07-31 2026-08-24
onb.private-api-nonprod.telstra.com.au 3 2025-08-12 2026-08-26
sit.private-api-nonprod.telstra.com.au 3 2025-08-12 2026-08-26
svt.private-api-nonprod.telstra.com.au 3 2025-08-12 2026-08-26
dev.private-api-nonprod.telstra.com.au 3 2025-08-12 2026-08-26
sit.myapi-nonprod.telstra.com.au 1 2025-08-12 2025-08-12
vdm.b2bnonprod.telstra.com.au 3 2025-07-27 2026-09-24
scm-mfe-preprd.telstra.com.au 1 2026-05-25 2026-05-25
trendmicro.modapi.oneplace.telstra.com.au 1 2026-04-16 2026-04-16
dev.bpm.ovs.facade.telstra.com.au 1 2025-11-14 2025-11-14
*.dev.bpm.ovs.facade.telstra.com.au 1 2025-11-14 2025-11-14
elevate-preprod.inside.telstra.com.au 1 2025-07-08 2025-07-08
bulkorder-timapiprod.inside.telstra.com.au 3 2025-07-24 2026-08-12
explore.inside.telstra.com.au 2 2026-01-30 2026-01-30
test2.explore.inside.telstra.com.au 1 2025-11-10 2025-11-10
test3.explore.inside.telstra.com.au 1 2025-11-10 2025-11-10
preprod.explore.inside.telstra.com.au 1 2025-11-10 2025-11-10
stage.explore.inside.telstra.com.au 1 2025-11-10 2025-11-10
dev.explore.inside.telstra.com.au 1 2025-11-10 2025-11-10
elevate.inside.telstra.com.au 1 2025-07-08 2025-07-08
elevate-preprod-api.inside.telstra.com.au 1 2025-07-08 2025-07-08
elevate-api.inside.telstra.com.au 1 2025-07-08 2025-07-08
elevate-sqi-api.inside.telstra.com.au 1 2025-07-08 2025-07-08
elevate-sit-api.inside.telstra.com.au 1 2025-07-08 2025-07-08

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.au.

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.au.