AS28291 — MINISTERIO DA SAUDE

AS28291 announces 1 IPv4 prefixes covering 4,096 addresses and 0 IPv6 prefixes.

About this network

AS28291 is operated by Ministério da Saúde, the Brazilian Ministry of Health.

What it's used for

• The address space is registered under the netname 95017 with the registrant MINISTERIO DA SAUDE, indicating a government healthcare network.
• The AS announces 4096 IPv4 addresses across 5 prefixes in Brazil and has 1 observed neighbour, a ratio consistent with a single-site or small-scale internal government network rather than a transit or access provider.

Notable

• All registrants in the RDAP data match the announcer, with MINISTERIO DA SAUDE listed for every prefix.
• The address inventory consists of five contiguous IPv4 blocks within the 189.28.128.0/21 range, showing a finely subdivided internal corporate estate typical of a large government organization.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 189.28.128.0/20

Upstream networks

• AS4230 CLARO S.A.

Adjacent networks

• AS4230 CLARO S.A.

Routing security

• RPKI: 0 valid, 0 invalid and 12 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 12 route objects.
• Listed in as-sets: AS-28513, AS-EMBRATELNET, AS-FORTEL-CUSTOMERS.