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) · 459 ms

HostCertsFirst seenLast seenDNS
cmegroup.com 5 2026-02-28 2026-07-17 ok
mq100.cmegroup.com 3 2025-07-10 2026-07-29 nxdomain
mq200.cmegroup.com 3 2025-07-10 2026-07-29 nxdomain
mq300.cmegroup.com 1 2025-12-03 2025-12-03 nxdomain
istio-dmz.gke-pr-usc1-shared-01.cmegroup.com 6 2026-03-07 2026-08-31 nxdomain
istio-dmz.gke-pr-ane1-shared-01.cmegroup.com 5 2026-03-07 2026-08-31 nxdomain
istio-dmz.gke-pr-euw2-shared-01.cmegroup.com 6 2026-03-07 2026-08-31 nxdomain
istio-dmz.gke-pr-use5-shared-01.cmegroup.com 6 2026-03-07 2026-08-31 nxdomain
istio-dmz.gke-pr-usc1-7dshared-01.cmegroup.com 6 2026-03-07 2026-08-31 nxdomain
istio-dmz.gke-pr-use5-7dshared-01.cmegroup.com 5 2026-03-07 2026-08-31 nxdomain
mq001.cmegroup.com 2 2025-07-19 2026-08-04 nxdomain
web-beta-web01.cmegroup.com 6 2025-10-13 2026-10-01 ok
web-prod-web01.cmegroup.com 3 2025-09-19 2026-10-01 ok
web-preview-web01.cmegroup.com 7 2025-08-05 2026-08-29 ok
web-beta-publish01.cmegroup.com 2 2025-10-13 2026-10-01 ok
web-prod-publish01.cmegroup.com 3 2025-09-19 2026-10-01 ok
web-preview-publish01.cmegroup.com 7 2025-08-05 2026-08-29 ok
web-qa2-author01.cmegroup.com 4 2026-03-20 2026-09-15 ok
web-beta-author01.cmegroup.com 6 2025-10-13 2026-10-01 ok
web-prod-author01.cmegroup.com 3 2025-09-19 2026-10-01 ok
web-preview-author01.cmegroup.com 7 2025-08-05 2026-08-29 ok
cmedirectmd-usc1.cmegroup.com 2 2026-08-21 2026-08-21 nxdomain
cmedirectmd-ll-usc1.cmegroup.com 1 2026-09-10 2026-09-10 nxdomain
cmedirectclient-ll-usc1.cmegroup.com 1 2026-09-10 2026-09-10 nxdomain
cmedirectclient-usc1.cmegroup.com 2 2026-08-21 2026-08-21 nxdomain
testacme1.cmegroup.com 1 2026-02-02 2026-02-02 nxdomain
defadmin1.cmegroup.com 2 2026-08-27 2026-08-27 nxdomain
authnr1.cmegroup.com 4 2026-04-15 2026-09-16 ok
Test1.cmegroup.com 1 2026-09-30 2026-09-30 —
765test1.cmegroup.com 1 2025-10-06 2025-10-06 nxdomain
mq002.cmegroup.com 2 2025-07-19 2026-08-04 nxdomain
web-beta-web02.cmegroup.com 2 2025-10-13 2026-10-01 nxdomain
web-prod-web02.cmegroup.com 3 2025-09-19 2026-10-01 ok
web-prod-publish02.cmegroup.com 3 2025-09-19 2026-10-01 ok
Foobar12312.cmegroup.com 1 2026-03-30 2026-03-30 —
defadmin22.cmegroup.com 1 2025-08-28 2025-08-28 nxdomain
qa2.cmegroup.com 4 2026-03-20 2026-09-15 ok
web-qa2.cmegroup.com 4 2026-03-20 2026-09-15 ok
web-prod2.cmegroup.com 3 2025-09-19 2026-10-01 nxdomain
workstation-tk2.cmegroup.com 6 2026-05-24 2026-09-30 ok
workstation-ln2.cmegroup.com 4 2026-05-17 2026-09-25 ok
comctrnr2.cmegroup.com 1 2025-11-19 2025-11-19 ok
Test2.cmegroup.com 1 2026-09-30 2026-09-30 —
654test2.cmegroup.com 1 2025-10-06 2025-10-06 nxdomain
082726test2.cmegroup.com 2 2026-08-27 2026-08-27 nxdomain
defadmin6v2.cmegroup.com 2 2026-08-25 2026-08-25 nxdomain
testv2.cmegroup.com 1 2026-09-30 2026-09-30 nxdomain
workstation-ny2.cmegroup.com 7 2026-05-23 2026-09-22 ok
mq003.cmegroup.com 1 2025-12-03 2025-12-03 nxdomain
web-prod-web03.cmegroup.com 3 2025-09-19 2026-10-01 ok
web-prod-publish03.cmegroup.com 3 2025-09-19 2026-10-01 ok
test123.cmegroup.com 1 2025-09-25 2025-09-25 nxdomain
external-idp-1710-DC3.cmegroup.com 1 2026-01-06 2026-01-06 —
awaydc3.cmegroup.com 3 2026-03-25 2026-09-19 ok
testv3.cmegroup.com 1 2026-09-30 2026-09-30 nxdomain
test082625.cmegroup.com 1 2025-08-26 2025-08-26 nxdomain
cmedirectmd-use5.cmegroup.com 2 2026-08-21 2026-08-21 nxdomain
cmedirectmd-ll-use5.cmegroup.com 1 2026-09-10 2026-09-10 nxdomain
cmedirectclient-ll-use5.cmegroup.com 1 2026-09-10 2026-09-10 nxdomain
cmedirectclient-use5.cmegroup.com 2 2026-08-21 2026-08-21 nxdomain
externalautorenewtest072126.cmegroup.com 20 2026-07-21 2026-07-28 nxdomain
defadmin2A260826.cmegroup.com 2 2026-08-26 2026-08-26 —
defadmin6.cmegroup.com 3 2025-08-27 2026-08-25 nxdomain
defadmin8.cmegroup.com 1 2025-09-04 2025-09-04 nxdomain
EXTERNAL.fed-sign19.cmegroup.com 1 2026-01-09 2026-01-09 —
021826x9.cmegroup.com 1 2026-02-18 2026-02-18 nxdomain
testD.cmegroup.com 1 2026-04-17 2026-04-17 —
EXTERNAL.IDP-PP.cmegroup.com 1 2026-01-05 2026-01-05 —
testV.cmegroup.com 1 2026-09-30 2026-09-30 —
btecgpa-ll-a.cmegroup.com 3 2026-05-13 2026-08-29 ok
check2fa.cmegroup.com 4 2026-02-28 2026-07-17 ok
rajariga.cmegroup.com 1 2025-09-24 2025-09-24 nxdomain
prod-ln-kibana.cmegroup.com 1 2026-01-10 2026-01-10 nxdomain
prod-ny-kibana.cmegroup.com 1 2026-01-10 2026-01-10 nxdomain
prod-ty-kibana.cmegroup.com 1 2026-01-10 2026-01-10 nxdomain
web-ops-grafana.cmegroup.com 1 2026-05-07 2026-05-07 ok
qa.cmegroup.com 2 2026-06-15 2026-06-15 nodata
web-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
idp-qa.cmegroup.com 1 2026-06-08 2026-06-08 ok
blue-web.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
green-web.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
current-web.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
blue.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
blue-publish.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
green-publish.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
current-publish.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
green.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
blue-author.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
green-author.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
current-author.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
reports.www-qa.cmegroup.com 2 2026-09-14 2026-09-14 ok
current.www-qa.cmegroup.com 4 2026-03-20 2026-09-15 ok
mendix-qa.cmegroup.com 1 2026-04-21 2026-04-21 ok
kafka-dmz-qa.cmegroup.com 1 2025-10-29 2025-10-29 nxdomain
eleveo-service-vendor-dmz-qa.cmegroup.com 1 2025-11-22 2025-11-22 ok
appian-services-vendor-dmz-qa.cmegroup.com 3 2025-09-13 2026-08-22 ok
cmedirectlwaqa10.qa.cmegroup.com 27 2026-04-22 2026-09-21 ok
cmedirectmdqa10.qa.cmegroup.com 29 2026-04-22 2026-09-21 ok
cmedirecttradingqa10.qa.cmegroup.com 24 2026-04-22 2026-09-21 nxdomain
cmedirectaggregatedapiqa10.qa.cmegroup.com 28 2026-04-22 2026-09-21 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/cmegroup.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/cmegroup.com.