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) · 393 ms

HostCertsFirst seenLast seenDNS
duplocloud.net 4 2025-08-07 2026-09-08 ok
*.duplocloud.net 8 2025-08-07 2026-09-08 —
test10.duplocloud.net 1 2025-10-09 2025-10-09 nodata
gcp-test10.duplocloud.net 3 2026-05-04 2026-08-21 ok
test20.duplocloud.net 2 2025-09-20 2026-08-21 ok
app0.duplocloud.net 1 2025-07-30 2025-07-30 nxdomain
scratch01.duplocloud.net 1 2025-12-10 2025-12-10 nodata
gcp-scratch01.duplocloud.net 3 2026-05-23 2026-09-11 ok
test01.duplocloud.net 1 2025-06-10 2025-06-10 nodata
ai-sandbox01.duplocloud.net 2 2025-06-12 2025-12-23 nodata
kc-ai-sandbox01.duplocloud.net 1 2025-12-23 2025-12-23 nodata
*.apps-ai-sandbox01.duplocloud.net 5 2025-06-12 2025-06-16 —
agents.apps-ai-sandbox01.duplocloud.net 1 2025-10-10 2025-10-10 servfail
*.agents.apps-ai-sandbox01.duplocloud.net 1 2025-10-10 2025-10-10 —
test21.duplocloud.net 2 2025-09-23 2026-08-24 ok
gcp-sa1.duplocloud.net 3 2026-04-29 2026-08-15 ok
gcp-test1.duplocloud.net 2 2025-07-24 2026-06-24 ok
test02.duplocloud.net 2 2025-09-23 2026-08-24 ok
test22.duplocloud.net 2 2025-10-08 2026-09-08 ok
fin2.duplocloud.net 2 2026-04-09 2026-09-09 ok
msp.duplocloud.net.uiv2.duplocloud.net 1 2025-12-18 2025-12-18 nodata
test03.duplocloud.net 1 2025-11-24 2025-11-24 servfail
*.test03.duplocloud.net 4 2025-11-24 2025-11-24 —
internal.test03.duplocloud.net 1 2025-10-26 2025-10-26 servfail
test13.duplocloud.net 1 2025-12-09 2025-12-09 ok
gcp-test13.duplocloud.net 3 2026-05-26 2026-09-12 ok
*.test13.duplocloud.net 1 2026-03-12 2026-03-12 —
*.qa-gcp3.duplocloud.net 3 2026-05-13 2026-08-30 —
onchain-dashboard.qa-gcp3.duplocloud.net 3 2026-04-24 2026-08-09 ok
regioncert.qa-gcp3.duplocloud.net 5 2026-04-16 2026-09-25 nodata
scratch04.duplocloud.net 2 2025-10-06 2026-09-06 ok
*.scratch04.duplocloud.net 2 2025-10-06 2026-09-06 —
test24.duplocloud.net 2 2025-08-10 2025-12-26 ok
*.test24.duplocloud.net 1 2025-08-10 2025-08-10 —
verify4.duplocloud.net 2 2026-04-13 2026-09-13 ok
gcp-test15.duplocloud.net 4 2026-04-26 2026-08-11 ok
*.gcp-test15.duplocloud.net 4 2026-04-08 2026-09-14 —
*.test25.duplocloud.net 5 2025-09-11 2025-12-23 —
element5.duplocloud.net 2 2026-04-12 2026-09-12 ok
test06.duplocloud.net 2 2025-06-11 2026-05-12 ok
*.test26.duplocloud.net 1 2025-06-23 2025-06-23 —
test07.duplocloud.net 2 2025-08-26 2026-07-27 ok
test27.duplocloud.net 2 2025-11-18 2025-12-02 nodata
*.test27.duplocloud.net 10 2025-11-18 2026-09-17 —
helpdesk.test27.duplocloud.net 4 2026-08-25 2026-08-27 nxdomain
helpdesk-xterm.test27.duplocloud.net 4 2026-08-25 2026-08-27 nxdomain
hd-docdb-plan-test-xterm.test27.duplocloud.net 1 2026-09-30 2026-09-30 nxdomain
*.portal-east.test27.duplocloud.net 2 2026-08-15 2026-08-15 —
hd-docdb-plan-test.test27.duplocloud.net 1 2026-09-30 2026-09-30 nxdomain
test08.duplocloud.net 2 2025-07-27 2025-12-23 nodata
test18.duplocloud.net 1 2025-09-16 2025-09-16 nodata
*.test18.duplocloud.net 4 2025-09-16 2025-09-23 —
gcp-test8.duplocloud.net 3 2026-05-21 2026-09-05 ok
gcptest8.duplocloud.net 3 2026-05-04 2026-08-19 nodata
*.gcptest8.duplocloud.net 3 2026-05-04 2026-08-19 —
test09.duplocloud.net 1 2025-07-27 2025-07-27 nodata
test19.duplocloud.net 2 2025-10-01 2026-09-01 ok
gcp-test9.duplocloud.net 7 2026-04-10 2026-09-23 ok
*.gcp-test9.duplocloud.net 3 2026-05-07 2026-08-30 —
entreda.duplocloud.net 2 2026-04-11 2026-09-11 ok
oneschema-gov-apptega.duplocloud.net 1 2025-07-02 2025-07-02 nxdomain
uniphore-qsales-dev-cicd-gha.duplocloud.net 2 2026-04-09 2026-09-09 ok
oneschema.duplocloud.net 3 2026-04-25 2026-09-25 ok
livelyme-oneschema.duplocloud.net 2 2025-06-17 2026-05-18 nodata
leasequery-oneschema.duplocloud.net 1 2025-08-15 2025-08-15 ok
msp.duplocloud.net.prasanna.duplocloud.net 1 2025-12-30 2025-12-30 nodata
gcp-ai-qa.duplocloud.net 4 2026-04-07 2026-09-12 ok
pypestream-qa.duplocloud.net 2 2025-08-10 2026-07-11 ok
sa.duplocloud.net 1 2026-05-14 2026-05-14 nodata
*.sa.duplocloud.net 1 2026-05-14 2026-05-14 —
xterm.psa.duplocloud.net 2 2026-07-10 2026-07-10 ok
duplo.psa.duplocloud.net 1 2026-06-10 2026-06-10 ok
*.duplo.psa.duplocloud.net 1 2026-06-10 2026-06-10 —
msp.duplocloud.net.jeeva.duplocloud.net 1 2025-12-30 2025-12-30 nxdomain
bdc.duplocloud.net 3 2026-04-18 2026-09-18 nxdomain
retispec.duplocloud.net 1 2026-02-08 2026-02-08 ok
komal-kc.duplocloud.net 2 2025-12-09 2025-12-09 ok
uniphorepoc.duplocloud.net 1 2025-09-15 2025-09-15 nxdomain
b2d.duplocloud.net 3 2026-04-18 2026-09-18 ok
infinant-thread.duplocloud.net 1 2026-01-12 2026-01-12 nxdomain
uniphore-qsales-cicd.duplocloud.net 2 2025-06-19 2026-05-20 ok
uniphore-qsales-dev-cicd.duplocloud.net 2 2025-06-11 2026-05-12 ok
tcd.duplocloud.net 1 2026-01-12 2026-01-12 ok
scentroid.duplocloud.net 1 2025-12-20 2025-12-20 ok
netyield.duplocloud.net 2 2025-07-28 2026-06-28 ok
prod.duplocloud.net 2 2025-06-08 2026-05-09 ok
sh-h3-prod.duplocloud.net 2 2025-07-25 2026-06-25 ok
*.sh-h3-prod.duplocloud.net 4 2025-07-25 2026-08-12 —
noetica-prod.duplocloud.net 1 2025-06-25 2025-06-25 nxdomain
vartana-prod.duplocloud.net 1 2025-08-09 2025-08-09 nxdomain
ayacare-prod.duplocloud.net 1 2026-01-04 2026-01-04 ok
sh-pre-prod.duplocloud.net 2 2026-02-21 2026-07-09 ok
sh-prod.duplocloud.net 2 2026-02-22 2026-07-10 ok
armorerlink-prod.duplocloud.net 3 2025-10-18 2026-09-18 ok
jfl-prod.duplocloud.net 1 2026-01-26 2026-01-26 ok
anthill-prod.duplocloud.net 2 2026-03-02 2026-07-18 ok
sl-prod.duplocloud.net 1 2025-09-07 2025-09-07 nxdomain
*.apps-sl-prod.duplocloud.net 5 2025-09-09 2025-10-03 —
pypestream-comm-prod.duplocloud.net 3 2026-04-13 2026-09-13 ok
sh-data-platform-prod.duplocloud.net 2 2025-09-21 2026-08-22 ok

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/duplocloud.net.

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/duplocloud.net.