AS28251 — Cizol Com. e Servicos de Equip de Informatica Ltda

AS28251 announces 1 IPv4 prefixes covering 4,096 addresses and 0 IPv6 prefixes.

About this network

AS28251 is operated by Cizol Com. e Serviços de Equip de Informatica Ltda.

What it's used for

• The address space carries static infrastructure, as evidenced by reverse DNS records consistently ending in .STATIC.cizol.com.br.
• The AS announces 4096 IPv4 addresses across 4 prefixes, with only 1 observed neighbour, indicating a small, self-contained network rather than a transit provider.

Notable

• All registrants match the announcer, identified as Cizol Com. e Serviços de Equip de Informatica Ltda with netname 121570.
• The inventory consists of four contiguous IPv4 blocks within the 187.1.0.0/16 range, specifically 187.1.144.0/21, 187.1.156.0/22, 187.1.152.0/23, and 187.1.154.0/23.

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

Announced prefixes

• 187.1.144.0/20

Upstream networks

• AS28186 ITS TELECOMUNICACOES LTDA

Adjacent networks

• AS28186 ITS TELECOMUNICACOES LTDA

Routing security

• RPKI: 0 valid, 0 invalid and 2 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 31 route objects.
• Listed in as-sets: AS-267613, AS-7738-BGP-CUSTOMERS, AS-7738_CUSTOMERS, AS-CTBC-CUSTOMERS206, AS-CTBC-TOOLS-5, AS-HURRICANE, AS-ITSBRASIL-CUSTOMER.