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.

3 hosts · 333 ms

HostCertsFirst seenLast seenDNS
aeonnetshop.com 1 2025-11-20 2025-11-20 nodata
*.aeonnetshop.com 1 2025-11-20 2025-11-20 —
www.aeonnetshop.com 4 2025-09-09 2026-07-12 ok

Programmatic access, with DNS A records: API GET /v1/hosts/aeonnetshop.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/aeonnetshop.com.