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.

11 hosts · 368 ms

HostCertsFirst seenLast seenDNS
fastloanadvance.com 35 2025-06-26 2026-08-23 ok
*.fastloanadvance.com 35 2025-06-26 2026-08-23 —
tagging.fastloanadvance.com 2 2025-09-14 2026-08-15 ok
debug.tagging.fastloanadvance.com 2 2025-09-14 2026-08-15 ok
*.h.fastloanadvance.com 1 2026-06-02 2026-06-02 —
ssl.fastloanadvance.com 5 2026-07-17 2026-09-14 ok
cdn.fastloanadvance.com 1 2026-05-20 2026-05-20 ok
loans.fastloanadvance.com 3 2026-01-14 2026-01-23 ok
*.loans.fastloanadvance.com 6 2026-01-13 2026-01-23 —
qa.loans.fastloanadvance.com 2 2026-01-13 2026-01-13 ok
*.qa.loans.fastloanadvance.com 2 2026-01-13 2026-01-13 —

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