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.

6 hosts · 264 ms

HostCertsFirst seenLast seen
soltech.com 17 2026-05-25 2026-10-06
wholesale.soltech.com 16 2026-04-16 2026-10-01
professional.soltech.com 7 2026-05-22 2026-09-19
returns.soltech.com 6 2026-05-15 2026-09-10
account.soltech.com 7 2026-04-19 2026-08-31
www.soltech.com 17 2026-05-25 2026-10-05

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