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.

18 hosts · 250 ms

Download CSV
HostCertsFirst seenLast seen
utrsports.com 2 2026-03-19 2026-09-18
*.utrsports.com 2 2026-03-19 2026-09-18
prod-cdn-static.utrsports.com 4 2026-04-13 2026-08-25
deploy-dashboard.utrsports.com 2 2026-04-22 2026-08-12
line-call-ai.utrsports.com 1 2026-03-18 2026-03-18
test4-groups-api.utrsports.com 1 2026-03-19 2026-03-19
test9-dev-groups-api.utrsports.com 1 2026-02-21 2026-02-21
linecall.utrsports.com 2 2026-03-19 2026-07-05
prod-cdn.utrsports.com 5 2026-04-13 2026-08-25
clicks.info.utrsports.com 4 2026-04-13 2026-08-25
clicks.hello.utrsports.com 4 2026-04-13 2026-08-25
mcp.utrsports.com 2 2026-06-13 2026-10-05
app.utrsports.com 1 2026-06-10 2026-06-10
qa-manager.utrsports.com 1 2026-07-21 2026-07-21
test9-dev-leagues.utrsports.com 1 2026-02-21 2026-02-21
logs.utrsports.com 1 2026-08-07 2026-08-07
links.utrsports.com 4 2026-04-13 2026-08-25
dataremovalrequest.utrsports.com 12 2026-05-08 2026-09-03

Programmatic access: API GET /v1/hosts/utrsports.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/utrsports.com.