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) · 1196 ms

HostCertsFirst seenLast seenDNS
g2a.com 60 2025-10-21 2026-10-02 ok
*.g2a.com 36 2025-10-21 2026-10-02 —
zep1.g2a.com 5 2026-05-02 2026-08-28 nodata
zep2.g2a.com 5 2026-05-03 2026-08-29 nodata
alerta.g2a.com 5 2026-05-25 2026-09-22 nodata
supporthub.g2a.com 10 2026-05-30 2026-09-25 ok
rbhgxvndgjnopdrvb.g2a.com 10 2026-05-30 2026-09-25 ok
pragmatic.g2a.com 5 2026-05-31 2026-09-28 ok
dashboard.g2a.com 13 2026-04-18 2026-09-08 ok
link-td.g2a.com 3 2026-05-20 2026-08-03 ok
statics-td.g2a.com 3 2026-05-20 2026-08-03 ok
jira.cloud.g2a.com 1 2026-05-14 2026-05-14 ok
frontier-backoffice.g2a.com 6 2026-06-02 2026-09-30 nodata
code.g2a.com 6 2026-05-18 2026-09-16 nodata
*.code.g2a.com 6 2026-05-18 2026-09-16 —
jira-test02.code.g2a.com 10 2026-04-25 2026-09-16 nodata
confluence-test02.code.g2a.com 10 2026-04-25 2026-09-16 nodata
jira-test03.code.g2a.com 4 2026-04-21 2026-09-16 nodata
confluence-test03.code.g2a.com 4 2026-04-21 2026-09-16 nodata
kibana.code.g2a.com 5 2026-05-05 2026-09-02 nodata
grafana.code.g2a.com 10 2026-04-09 2026-08-27 ok
cocoa.code.g2a.com 5 2026-04-15 2026-08-17 nodata
jira.code.g2a.com 6 2026-05-22 2026-09-17 nodata
alerta.code.g2a.com 5 2026-05-25 2026-09-22 nodata
am4-crm-app01-d.code.g2a.com 5 2026-04-25 2026-08-21 nxdomain
confluence-old.code.g2a.com 6 2026-05-22 2026-09-17 nodata
jira-cloud.code.g2a.com 2 2026-05-12 2026-05-12 nxdomain
kibana-adservice.code.g2a.com 5 2026-05-21 2026-09-16 nodata
confluence.code.g2a.com 6 2026-05-22 2026-09-17 nxdomain
opsgenie.code.g2a.com 4 2026-04-12 2026-08-08 nodata
openobserve.code.g2a.com 1 2026-08-06 2026-08-06 nodata
lg.code.g2a.com 3 2026-06-25 2026-08-24 nodata
search.code.g2a.com 5 2026-05-10 2026-09-05 nodata
ceph.code.g2a.com 10 2026-05-19 2026-09-15 nodata
stash.code.g2a.com 7 2026-04-28 2026-08-24 nodata
oci.code.g2a.com 5 2026-04-15 2026-08-17 nodata
cache.oci.code.g2a.com 5 2026-04-15 2026-08-17 nodata
unifi.code.g2a.com 4 2026-04-12 2026-08-08 nodata
cli.code.g2a.com 5 2026-04-15 2026-08-17 nodata
glpi.code.g2a.com 3 2026-05-28 2026-08-21 nxdomain
pypi.code.g2a.com 5 2026-04-15 2026-08-17 nodata
pask.code.g2a.com 8 2026-05-21 2026-08-21 nodata
helm-external.code.g2a.com 5 2026-04-15 2026-08-17 nodata
design-system.code.g2a.com 5 2026-05-18 2026-09-15 ok
helm.code.g2a.com 5 2026-04-15 2026-08-17 nodata
npm.code.g2a.com 5 2026-04-15 2026-08-17 nodata
suitecrm.code.g2a.com 5 2026-04-25 2026-08-21 nxdomain
observium.code.g2a.com 5 2026-05-26 2026-09-21 nxdomain
debian.code.g2a.com 5 2026-04-15 2026-08-17 nodata
bitwarden.code.g2a.com 5 2026-04-13 2026-07-13 ok
go.code.g2a.com 5 2026-04-15 2026-08-17 nodata
cargo.code.g2a.com 5 2026-04-15 2026-08-17 nodata
bamboo.code.g2a.com 5 2026-05-20 2026-09-15 nodata
sonar-pro.code.g2a.com 5 2026-05-10 2026-09-07 nodata
php.code.g2a.com 5 2026-04-15 2026-08-17 nodata
sonar.code.g2a.com 4 2026-04-09 2026-08-07 nodata
docker.code.g2a.com 5 2026-04-15 2026-08-17 nodata
cache.docker.code.g2a.com 5 2026-04-15 2026-08-17 nodata
pcidss.docker.code.g2a.com 1 2026-08-17 2026-08-17 nodata
schemas.code.g2a.com 5 2026-04-15 2026-08-17 nodata
docs.code.g2a.com 5 2026-04-15 2026-08-17 nodata
releases.code.g2a.com 10 2026-04-29 2026-08-26 nodata
crates.code.g2a.com 5 2026-04-15 2026-08-17 nodata
gems.code.g2a.com 5 2026-04-15 2026-08-17 nodata
jenkins.code.g2a.com 7 2026-05-14 2026-09-10 nodata
old.jenkins.code.g2a.com 7 2026-05-14 2026-09-10 nodata
dev.jenkins.code.g2a.com 5 2026-05-04 2026-08-31 nodata
new.jenkins.code.g2a.com 7 2026-05-14 2026-09-10 nodata
access-ss.code.g2a.com 5 2026-05-26 2026-09-21 nodata
artifacts.code.g2a.com 5 2026-04-15 2026-08-17 nodata
search-events.code.g2a.com 5 2026-05-22 2026-09-17 nodata
qualys.code.g2a.com 7 2026-04-28 2026-08-24 nodata
nuget.code.g2a.com 5 2026-04-15 2026-08-17 nodata
commvault.code.g2a.com 4 2026-05-21 2026-08-19 nxdomain
vagrant.code.g2a.com 5 2026-04-15 2026-08-17 nodata
schemas-snapshot.code.g2a.com 5 2026-04-15 2026-08-17 nodata
jira-test.code.g2a.com 10 2026-05-09 2026-09-16 nodata
confluence-test.code.g2a.com 10 2026-05-09 2026-09-16 nodata
rust.code.g2a.com 3 2026-05-12 2026-08-11 ok
tableau.code.g2a.com 3 2026-06-29 2026-09-26 nodata
ubuntu.code.g2a.com 5 2026-04-15 2026-08-17 nodata
confluence-new.code.g2a.com 6 2026-05-22 2026-09-17 nodata
zabbix.code.g2a.com 5 2026-04-23 2026-08-19 nodata
netbox.code.g2a.com 5 2026-05-24 2026-09-19 nodata
helm-nightly.code.g2a.com 5 2026-04-15 2026-08-17 nodata
artifactory.code.g2a.com 5 2026-04-15 2026-08-17 nodata
frontier-api.g2a.com 6 2026-06-02 2026-09-30 nodata
payment-api.g2a.com 6 2026-07-06 2026-09-04 nodata
vkxyjj.g2a.com 3 2026-04-30 2026-09-12 ok
click.g2a.com 9 2026-04-28 2026-08-26 ok
modal.g2a.com 8 2026-04-17 2026-08-15 ok
eb-internal.g2a.com 15 2026-04-08 2026-10-03 nodata
mag-internal.g2a.com 22 2026-04-18 2026-09-30 nxdomain
cps-internal.g2a.com 10 2026-05-04 2026-08-30 nodata
ss-internal.g2a.com 16 2026-04-16 2026-08-12 nodata
eventbus-internal.g2a.com 15 2026-04-08 2026-10-03 nodata
stoplist-internal.g2a.com 8 2026-04-15 2026-08-13 nodata
pay-internal.g2a.com 18 2026-05-26 2026-09-22 nodata
sgtm.g2a.com 3 2026-05-18 2026-09-04 ok
www.sgtm.g2a.com 6 2026-04-26 2026-09-30 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/g2a.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/g2a.com.