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.

18 hosts · 402 ms

HostCertsFirst seenLast seenDNS
binarly.io 33 2026-04-15 2026-09-27 ok
*.binarly.io 26 2026-04-15 2026-09-27 —
cd.binarly.io 5 2026-05-12 2026-09-14 ok
edge.binarly.io 3 2026-06-01 2026-09-16 ok
showcase.binarly.io 5 2026-05-19 2026-09-19 ok
staging.binarly.io 8 2026-05-16 2026-09-11 ok
www.staging.binarly.io 6 2026-05-16 2026-09-11 ok
risk-api.binarly.io 1 2026-05-10 2026-05-10 ok
link.binarly.io 8 2026-04-23 2026-08-19 ok
risk.binarly.io 1 2026-05-10 2026-05-10 ok
info.binarly.io 8 2026-05-23 2026-09-19 ok
docs.binarly.io 5 2026-05-23 2026-09-22 ok
vulhunt-docs.binarly.io 5 2026-05-18 2026-09-19 ok
links.binarly.io 11 2026-04-18 2026-10-04 ok
mta-sts.binarly.io 6 2026-06-03 2026-10-01 ok
support.binarly.io 10 2026-04-24 2026-08-20 ok
trust.binarly.io 7 2026-05-30 2026-09-25 ok
www.binarly.io 9 2026-05-16 2026-09-21 ok

Programmatic access, with DNS A records: API GET /v1/hosts/binarly.io (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/binarly.io.