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.

59 hosts · 243 ms

Download CSV
HostCertsFirst seenLast seen
upx.com 2 2026-01-14 2026-09-14
*.upx.com 1 2026-01-14 2026-01-14
www.ddns4.upx.com 5 2026-04-28 2026-08-27
diag6.upx.com 5 2026-05-05 2026-09-02
www.ddns6.upx.com 5 2026-04-28 2026-08-27
openclaw-shield.upx.com 5 2026-06-06 2026-09-23
core.upx.com 5 2026-04-28 2026-08-27
sase.upx.com 3 2026-02-05 2026-07-17
*.sase.upx.com 1 2026-02-05 2026-02-05
staging.sase.upx.com 2 2026-02-12 2026-07-06
admin-staging.sase.upx.com 2 2026-03-16 2026-07-09
app-staging.sase.upx.com 2 2026-03-16 2026-07-21
docs.sase.upx.com 6 2026-05-06 2026-09-01
staging.site.upx.com 1 2026-09-17 2026-09-17
diag.upx.com 5 2026-05-07 2026-09-05
agents-staging.upx.com 2 2026-10-05 2026-10-06
*.agents-staging.upx.com 2 2026-10-05 2026-10-06
billing.upx.com 2 2026-02-17 2026-07-09
staging-billing.upx.com 2 2026-02-16 2026-07-09
api.billing.upx.com 3 2026-02-19 2026-10-03
staging-api.billing.upx.com 3 2026-02-19 2026-10-03
blog.upx.com 5 2026-04-28 2026-08-27
cmsblog.upx.com 5 2026-04-28 2026-08-27
auth.upx.com 10 2026-06-01 2026-09-28
unifi.upx.com 3 2026-06-17 2026-08-17
feedback.upx.com 10 2026-06-06 2026-10-02
helpdesk.upx.com 5 2026-04-28 2026-08-27
www.helpdesk.upx.com 5 2026-04-28 2026-08-27
warroom.upx.com 2 2026-02-21 2026-07-12
crm.upx.com 6 2026-05-19 2026-08-04
platform.upx.com 1 2026-02-05 2026-02-05
*.platform.upx.com 1 2026-02-05 2026-02-05
cdn.upx.com 1 2025-10-14 2025-10-14
*.cdn.upx.com 1 2025-10-14 2025-10-14
login.upx.com 3 2026-05-12 2026-09-24
links.mcp.upx.com 1 2026-07-30 2026-07-30
dump.upx.com 5 2026-04-28 2026-08-27
www.dump.upx.com 5 2026-04-28 2026-08-27
player.upx.com 5 2026-05-04 2026-09-02
docs.upx.com 6 2026-05-18 2026-07-16
files.upx.com 5 2026-04-28 2026-08-27
imgs.upx.com 5 2026-04-28 2026-08-27
cns-customers.upx.com 2 2026-05-06 2026-05-06
uss.upx.com 3 2026-01-28 2026-09-03
staging.uss.upx.com 1 2026-09-01 2026-09-01
prod-aws.uss.upx.com 1 2026-09-03 2026-09-03
origin.prod-aws.uss.upx.com 1 2026-09-03 2026-09-03
ats.upx.com 1 2026-09-11 2026-09-11
agents.upx.com 4 2026-10-01 2026-10-08
*.agents.upx.com 4 2026-10-01 2026-10-08
status.upx.com 6 2026-05-04 2026-09-01
emailmkt.upx.com 10 2026-05-20 2026-09-15
projectmanagement.upx.com 1 2026-09-08 2026-09-08
auth-dev.upx.com 10 2026-05-11 2026-09-07
truk-dev.upx.com 1 2026-09-14 2026-09-14
nwow.upx.com 1 2026-10-17 2026-10-17
www.upx.com 2 2026-08-11 2026-08-11
cortex.upx.com 6 2026-06-17 2026-09-02
cybersecurity.upx.com 10 2026-05-21 2026-09-16

Programmatic access: API GET /v1/hosts/upx.com (API key for paging).

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/upx.com.