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.

22 hosts · 348 ms

HostCertsFirst seenLast seenDNS
warmly.ai 52 2026-04-15 2026-10-02 ok
*.warmly.ai 29 2026-04-22 2026-10-02 —
crm-backend.warmly.ai 3 2026-04-29 2026-06-21 ok
ingestion-service.warmly.ai 2 2026-05-07 2026-06-30 ok
hog.warmly.ai 9 2026-04-15 2026-08-11 ok
h.warmly.ai 5 2026-05-04 2026-09-05 ok
tamly-api.warmly.ai 2 2026-05-05 2026-06-29 ok
coldly-mcp.warmly.ai 3 2026-04-28 2026-06-20 ok
help.warmly.ai 3 2025-09-21 2026-08-22 ok
testhelp.warmly.ai 3 2025-09-20 2026-08-21 ok
app.warmly.ai 2 2026-05-07 2026-07-01 ok
nametags.warmly.ai 12 2026-04-16 2026-08-13 ok
zoom-nametags.warmly.ai 5 2026-04-25 2026-08-29 ok
teams.warmly.ai 4 2026-06-05 2026-10-05 ok
tours.warmly.ai 7 2026-04-21 2026-08-27 ok
agents.warmly.ai 3 2026-05-01 2026-06-23 ok
mta-sts.warmly.ai 6 2026-05-20 2026-09-15 ok
*.mta-sts.warmly.ai 6 2026-05-20 2026-09-15 —
api.rapport.warmly.ai 6 2026-05-01 2026-08-27 ok
teams-dev.warmly.ai 5 2026-04-23 2026-08-24 ok
www.warmly.ai 12 2026-06-06 2026-10-02 ok
security.warmly.ai 8 2026-05-06 2026-09-01 ok

Programmatic access, with DNS A records: API GET /v1/hosts/warmly.ai (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/warmly.ai.