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.

7 hosts · 267 ms

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HostCertsFirst seenLast seen
upx.com.br 7 2026-05-04 2026-09-14
inside.upx.com.br 4 2026-06-04 2026-09-21
core.upx.com.br 5 2026-04-28 2026-08-27
cdn.upx.com.br 2 2026-09-18 2026-09-18
links.mcp.upx.com.br 1 2026-07-30 2026-07-30
tracking.updates.upx.com.br 1 2026-06-16 2026-06-16
www.upx.com.br 7 2026-05-04 2026-09-14

Programmatic access: API GET /v1/hosts/upx.com.br (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/upx.com.br.