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.

23 hosts · 259 ms

HostCertsFirst seenLast seenDNS
littlespoon.com 20 2026-05-11 2026-09-30 ok
*.littlespoon.com 20 2026-05-11 2026-09-30 —
kb.littlespoon.com 1 2026-02-03 2026-02-03 ok
api-stage.littlespoon.com 4 2026-04-21 2026-08-20 ok
api.stage.littlespoon.com 1 2026-04-21 2026-04-21 ok
bjtag.littlespoon.com 13 2026-04-09 2026-10-03 ok
*.staging.littlespoon.com 1 2025-12-24 2025-12-24 —
ampstaging.littlespoon.com 2 2025-08-06 2026-07-07 ok
i.littlespoon.com 4 2026-06-10 2026-09-27 ok
api.littlespoon.com 5 2026-05-23 2026-09-22 ok
gutcheck.littlespoon.com 3 2026-06-08 2026-08-15 ok
thegutcheck.littlespoon.com 3 2026-06-08 2026-08-15 ok
isthisnormal.littlespoon.com 5 2026-04-27 2026-09-12 ok
learn.littlespoon.com 5 2026-05-11 2026-09-24 ok
hello.littlespoon.com 2 2025-08-06 2026-07-07 ok
refer.littlespoon.com 2 2026-02-24 2026-07-27 ok
ds.littlespoon.com 5 2026-05-07 2026-09-04 ok
lunchers-leads.littlespoon.com 9 2026-05-02 2026-09-01 ok
resources.littlespoon.com 10 2026-05-04 2026-08-30 ok
earlyaccess.littlespoon.com 10 2026-04-13 2026-08-09 ok
joinus.littlespoon.com 3 2026-05-27 2026-08-03 ok
amptest.littlespoon.com 2 2025-08-06 2026-07-07 ok
privacy.littlespoon.com 1 2025-12-15 2025-12-15 ok

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