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.

4 hosts · 266 ms

HostCertsFirst seenLast seen
mvstbsrvr.bear.com 5 2025-09-02 2026-09-25
mvstnsrvr.bear.com 3 2025-07-16 2026-09-09
vpctwebwny.is.bear.com 1 2026-04-17 2026-04-17
www.bear.com 2 2026-01-29 2026-01-29

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