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.

15 hosts · 365 ms

HostCertsFirst seenLast seenDNS
uhccommunityplan.com 13 2025-07-17 2026-09-09 ok
prod.uhccommunityplan.com 1 2025-09-12 2025-09-12 nxdomain
prod-nocdn.uhccommunityplan.com 1 2025-09-12 2025-09-12 nxdomain
info.uhccommunityplan.com 8 2025-07-11 2026-10-05 ok
dsnp.uhccommunityplan.com 11 2025-07-11 2026-10-05 ok
www.dsnp.uhccommunityplan.com 6 2025-07-11 2026-10-05 ok
es.uhccommunityplan.com 11 2025-07-17 2026-09-09 ok
cloud.news.uhccommunityplan.com 2 2025-07-14 2026-07-02 servfail
image.news.uhccommunityplan.com 2 2026-04-23 2026-09-14 ok
click.news.uhccommunityplan.com 2 2025-07-14 2026-07-01 ok
pages.news.uhccommunityplan.com 2 2025-07-14 2026-07-02 ok
view.news.uhccommunityplan.com 2 2025-07-14 2026-07-01 ok
statereportingportal-test.uhccommunityplan.com 4 2025-08-25 2026-07-20 nxdomain
preview.uhccommunityplan.com 1 2025-09-12 2025-09-12 nxdomain
www.uhccommunityplan.com 12 2025-07-17 2026-09-09 ok

Programmatic access, with DNS A records: API GET /v1/hosts/uhccommunityplan.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/uhccommunityplan.com.