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.

21 hosts · 296 ms

HostCertsFirst seenLast seenDNS
champssports.com 6 2026-04-26 2026-08-26 ok
*.champssports.com 5 2026-05-25 2026-09-22 —
trk.bc.champssports.com 3 2026-05-23 2026-09-09 ok
dd.champssports.com 3 2026-06-08 2026-08-22 ok
mi.champssports.com 4 2025-10-21 2026-09-16 ok
sanl.champssports.com 2 2025-07-15 2026-07-10 ok
*.uat2.origin.champssports.com 5 2026-05-05 2026-09-02 —
www.uat2.origin.champssports.com 3 2026-05-15 2026-08-17 ok
*.test3.origin.champssports.com 4 2026-04-19 2026-08-17 —
www.test3.origin.champssports.com 1 2026-08-13 2026-08-13 ok
www.dev4.origin.champssports.com 2 2026-04-15 2026-08-13 ok
www.test5.origin.champssports.com 2 2026-04-15 2026-08-13 ok
www.dev5.origin.champssports.com 2 2026-04-15 2026-08-13 ok
staging.origin.champssports.com 6 2026-04-17 2026-08-08 ok
help.champssports.com 6 2026-05-04 2026-09-01 ok
nejzq.champssports.com 10 2026-05-16 2026-09-12 ok
jobs.champssports.com 13 2026-04-10 2026-09-25 ok
stores.champssports.com 4 2026-02-26 2026-07-14 ok
careers.champssports.com 11 2026-04-09 2026-09-24 ok
events.champssports.com 5 2026-05-28 2026-09-25 ok
target.champssports.com 5 2025-07-21 2026-09-05 ok

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