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.

2 hosts · 228 ms

HostCertsFirst seenLast seen
solvent.life 8 2026-06-12 2026-10-08
www.solvent.life 7 2026-06-12 2026-10-08

Programmatic access: API GET /v1/hosts/solvent.life (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/solvent.life.