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.

11 hosts · 358 ms

HostCertsFirst seenLast seenDNS
coin.z.com 5 2025-09-12 2026-08-12 ok
*.coin.z.com 5 2025-09-12 2026-09-30 —
cloud.ma.coin.z.com 3 2026-03-19 2026-08-20 ok
image.ma.coin.z.com 50 2026-03-19 2026-09-18 ok
click.ma.coin.z.com 3 2026-03-19 2026-08-24 ok
view.ma.coin.z.com 3 2026-03-19 2026-08-20 ok
api.coin.z.com 1 2026-04-21 2026-04-21 ok
forex-api.coin.z.com 1 2026-04-21 2026-04-21 ok
account.coin.z.com 2 2026-04-21 2026-04-28 ok
support.coin.z.com 2 2026-04-21 2026-04-23 ok
fix.coin.z.com 1 2026-04-21 2026-04-21 ok

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