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.

24 hosts · 349 ms

HostCertsFirst seenLast seenDNS
scoresense.com 20 2026-05-03 2026-09-29 ok
*.scoresense.com 22 2025-06-13 2026-09-29 —
members1.scoresense.com 14 2026-05-25 2026-09-20 ok
members2.scoresense.com 16 2026-05-26 2026-09-21 ok
marketing.c.scoresense.com 1 2026-03-13 2026-03-13 ok
*.marketing.c.scoresense.com 1 2026-03-13 2026-03-13 —
secure.scoresense.com 20 2026-05-25 2026-09-20 ok
marketing.scoresense.com 1 2026-02-17 2026-02-17 ok
*.marketing.scoresense.com 1 2026-02-17 2026-02-17 —
productcatalog.scoresense.com 18 2026-06-02 2026-09-28 ok
mh.scoresense.com 12 2026-05-06 2026-09-01 ok
auth.scoresense.com 16 2026-06-02 2026-09-28 ok
email.scoresense.com 12 2026-05-03 2026-08-29 ok
*.email.scoresense.com 12 2026-05-03 2026-08-29 —
image.email.scoresense.com 3 2026-01-21 2026-09-21 ok
click.email.scoresense.com 1 2026-01-15 2026-01-15 ok
pages.email.scoresense.com 1 2026-01-15 2026-01-15 ok
view.email.scoresense.com 1 2026-01-15 2026-01-15 ok
cxcomm.scoresense.com 21 2026-06-03 2026-09-30 ok
learn.scoresense.com 4 2026-05-25 2026-08-01 ok
members.scoresense.com 20 2026-05-25 2026-09-21 ok
alerts.scoresense.com 16 2026-06-02 2026-09-28 ok
www.scoresense.com 16 2026-05-06 2026-09-01 ok
apigateway.scoresense.com 14 2026-06-02 2026-09-28 ok

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