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 · 267 ms

HostCertsFirst seenLast seen
arangrant.com 28 2025-07-07 2026-10-05
*.arangrant.com 15 2025-07-07 2026-10-05
bumblebee.arangrant.com 8 2026-04-24 2026-08-20
fly.arangrant.com 6 2026-07-03 2026-08-31

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