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.

9 hosts · 320 ms

HostCertsFirst seenLast seenDNS
devexpress.com 7 2026-03-20 2026-09-30 ok
*.devexpress.com 7 2026-03-20 2026-09-30 —
sc-cdn2.devexpress.com 1 2026-10-01 2026-10-01 ok
test26.devexpress.com 1 2026-09-23 2026-09-23 ok
media.devexpress.com 1 2026-09-18 2026-09-18 ok
sc-cdn.devexpress.com 2 2026-01-28 2026-06-13 ok
localization-cdn.devexpress.com 2 2026-01-13 2026-06-11 ok
cf-custom-pages.devexpress.com 2 2026-02-25 2026-07-15 ok
status.devexpress.com 4 2026-04-16 2026-08-17 ok

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