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.

5 hosts · 269 ms

HostCertsFirst seenLast seen
livebetterhearing.com 18 2026-05-08 2026-09-29
*.livebetterhearing.com 10 2026-05-08 2026-09-29
hello.livebetterhearing.com 14 2026-04-20 2026-08-17
shop.livebetterhearing.com 8 2026-05-04 2026-08-31
www.livebetterhearing.com 12 2026-05-07 2026-09-03

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