AS28203 — Webcenter Sist Prest de Servicos de Informatica

AS28203 announces 4 IPv4 prefixes covering 3,840 addresses and 0 IPv6 prefixes.

About this network

AS28203 is operated by Webcenter Sistemas, a Brazilian information technology services provider.

What it's used for

• The address space carries corporate IT infrastructure, evidenced by reverse DNS entries pointing to birdsnet.net.br and connexion.com.br, as well as a test host testericardo.birdsnet.net.br.
• The AS announces 3840 IPv4 addresses across 7 prefixes with only 1 observed neighbour, indicating a small, self-contained business network rather than a transit or large-scale access provider.

Notable

• Registrants are consistent with the announcer, appearing as "Webcenter Sistemas - Prest. Servic Informatica Ltd" and "Webcenter Sist Prest de Servicos de Informatica" across all listed prefixes.
• The inventory consists of a contiguous block within the 189.91.32.0/20 range, subdivided into /22, /23, and /24 prefixes, typical of a corporate estate managing internal site segmentation.

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

Announced prefixes

• 189.91.32.0/23
• 189.91.34.0/24
• 189.91.36.0/22
• 189.91.40.0/21

Upstream networks

• AS22356 Durand do Brasil Ltda
• AS53107 EVEO S.A.

Adjacent networks

• AS22356 Durand do Brasil Ltda
• AS53107 EVEO S.A.