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.

17 hosts · 294 ms

HostCertsFirst seenLast seenDNS
wheely.com 18 2025-06-25 2026-09-27 ok
*.wheely.com 16 2026-04-30 2026-09-27 —
vpn-infra.wheely.com 10 2026-05-16 2026-10-02 ok
cd.wheely.com 2 2025-06-25 2026-05-26 ok
prod.wheely.com 3 2026-05-02 2026-09-02 nxdomain
*.prod.wheely.com 3 2026-05-02 2026-09-02 —
ablink.e.wheely.com 2 2025-07-08 2026-06-07 ok
metabase.wheely.com 4 2026-04-21 2026-08-19 ok
stg.wheely.com 3 2026-06-21 2026-08-21 ok
*.stg.wheely.com 3 2026-06-21 2026-08-21 —
reception.wheely.com 2 2025-10-07 2026-09-07 ok
metrics.wheely.com 5 2026-06-02 2026-09-30 ok
docs.wheely.com 10 2026-05-17 2026-09-12 ok
gems.wheely.com 1 2026-01-12 2026-01-12 ok
dev.wheely.com 9 2026-04-22 2026-10-01 ok
*.dev.wheely.com 9 2026-04-22 2026-10-01 —
vault-new.wheely.com 15 2026-05-11 2026-09-08 ok

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