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.

20 hosts · 281 ms

HostCertsFirst seenLast seenDNS
faire.com 58 2026-04-30 2026-10-04 ok
*.faire.com 37 2026-04-30 2026-10-04 —
link.email1.faire.com 16 2026-05-24 2026-09-19 ok
link.email2.faire.com 16 2026-05-24 2026-09-19 ok
link.email3.faire.com 16 2026-05-24 2026-09-19 ok
media.faire.com 1 2026-01-30 2026-01-30 ok
click.recruiting.faire.com 1 2026-06-30 2026-06-30 ok
*.api.faire.com 19 2026-04-14 2026-09-08 —
otel-http.api.faire.com 4 2026-05-21 2026-06-22 ok
cdn.faire.com 2 2025-09-19 2026-09-06 ok
video-cdn.faire.com 5 2026-05-25 2026-09-22 ok
original-video-cdn.faire.com 5 2026-05-03 2026-08-31 ok
design.faire.com 5 2026-05-05 2026-08-27 ok
www.design.faire.com 5 2026-05-05 2026-08-28 ok
learn.faire.com 14 2026-04-10 2026-10-05 ok
translator.faire.com 2 2026-05-22 2026-05-22 ok
sales.faire.com 5 2026-05-07 2026-09-04 ok
foundations.faire.com 5 2026-05-30 2026-09-26 ok
events.faire.com 6 2026-01-15 2026-09-25 ok
craft.faire.com 8 2026-04-24 2026-08-21 ok

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