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.

16 hosts · 225 ms

HostCertsFirst seenLast seenDNS
palmetto.com 45 2026-04-17 2026-10-02 ok
*.palmetto.com 45 2026-04-17 2026-10-02 —
data.palmetto.com 10 2026-05-10 2026-09-05 ok
auth.palmetto.com 8 2026-04-17 2026-08-13 ok
*.api.palmetto.com 12 2026-06-06 2026-10-02 —
image.email.palmetto.com 3 2025-07-05 2026-07-23 ok
go.palmetto.com 10 2025-07-17 2026-08-08 ok
refer.palmetto.com 8 2026-05-09 2026-09-04 ok
ei.docs.palmetto.com 8 2026-05-01 2026-08-27 ok
techops.palmetto.com 5 2026-04-28 2026-08-27 ok
*.partners.palmetto.com 20 2026-05-10 2026-10-02 —
helm-charts.palmetto.com 5 2026-04-30 2026-08-28 ok
status.palmetto.com 5 2026-04-22 2026-08-19 ok
ambassadorsnippet.palmetto.com 13 2026-05-23 2026-09-19 ok
auth-next.palmetto.com 10 2026-05-14 2026-09-10 ok
academy.palmetto.com 23 2026-05-04 2026-09-01 ok

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