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.

2 hosts · 227 ms

HostCertsFirst seenLast seenDNS
dhlfreight-news.com 29 2026-04-07 2026-10-02 ok
*.dhlfreight-news.com 17 2026-04-07 2026-10-02 —

Programmatic access, with DNS A records: API GET /v1/hosts/dhlfreight-news.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/dhlfreight-news.com.