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.

8 hosts · 334 ms

HostCertsFirst seenLast seenDNS
worldofasphalt.com 3 2025-07-08 2026-07-08 ok
kentico.worldofasphalt.com 3 2025-07-08 2026-07-08 ok
dev-kentico.worldofasphalt.com 2 2025-07-08 2026-07-10 ok
uploads.worldofasphalt.com 4 2026-04-14 2026-08-13 ok
dev.worldofasphalt.com 2 2025-07-08 2026-07-10 ok
www.worldofasphalt.com 3 2025-07-08 2026-07-08 ok
directory.worldofasphalt.com 3 2025-07-08 2026-06-08 ok
*.directory.worldofasphalt.com 2 2025-07-08 2026-06-08 —

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