Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

10 hosts · 227 ms

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HostCertsFirst seenLast seen
ifia.com 9 2026-05-16 2026-09-20
staging.ifia.com 1 2026-09-11 2026-09-11
webdisk.ifia.com 5 2026-05-16 2026-09-15
cpanel.ifia.com 5 2026-05-16 2026-09-15
mail.ifia.com 5 2026-05-16 2026-09-15
app.ifia.com 10 2026-05-28 2026-09-23
*.app.ifia.com 10 2026-05-28 2026-09-23
www.ifia.com 9 2026-05-16 2026-09-20
pay.ifia.com 2 2026-04-25 2026-06-25
www.pay.ifia.com 2 2026-04-25 2026-06-25

Programmatic access: API GET /v1/hosts/ifia.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/ifia.com.