AS11644 — Nucleo de Inf. e Coord. do Ponto BR - NIC.

AS11644 announces 1 IPv4 prefixes covering 512 addresses and 1 IPv6 prefixes.

About this network

AS11644 belongs to NIC.br, the Brazilian non-profit that carries out the decisions of the Brazilian Internet Steering Committee (CGI.br): it runs the .br domain registry (Registro.br), the national CSIRT (CERT.br), the IX.br exchange-point fabric, and Brazil's internet measurement and statistics work. RIS sees 2 IPv4 prefixes (512 addresses), 2 IPv6 prefixes out of 2001:12f8::/32, and 39 observed BGP neighbours.

What it's used for

NIC.br's own service infrastructure, not customer connectivity. The two IPv4 /24s sit in 200.219.154.0 and 200.219.155.0; a direct check against the Brazilian registry confirms 200.219.154.0/24 is registered to Núcleo de Inf. e Coord. do Ponto BR itself, so the space is self-held rather than announced on behalf of anyone else.

The number that carries the meaning here is 39 neighbours against only 512 addresses. That ratio is not an eyeball network and not an enterprise: it is the shape of an organisation that peers widely and deliberately. NIC.br operates and sits inside IX.br, by participant count one of the largest exchange-point systems in the world, and the services behind these prefixes — registry, DNS, security response, measurement — are the sort that every Brazilian network wants to reach directly rather than over transit. Dozens of adjacencies against a tiny address footprint is what "peer with everybody, sell to nobody" looks like in BGP.

Notable

The IPv6 announcements are two /48s carved from 2001:12f8::/32, NIC.br's own allocation — a fitting posture for the body that has spent years pushing IPv6 adoption across Brazil.

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

Announced prefixes

• 200.219.154.0/23
• 2001:12f8:4::/47

Upstream networks

• AS6939 Hurricane Electric LLC
• AS1921 ipcom GmbH
• AS29504 Freenet Liberec, z.s.
• AS50304 Blix Solutions AS
• AS24482 SG.GS
• AS20473 The Constant Company, LLC

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS1921 ipcom GmbH
• AS29504 Freenet Liberec, z.s.
• AS50304 Blix Solutions AS
• AS24482 SG.GS
• AS20473 The Constant Company, LLC

Internet exchanges

• IX.br (PTT.br) São Paulo — São Paulo, Brazil
• IX.br (PTT.br) Porto Alegre — Porto Alegre, Brazil
• IX.br (PTT.br) Curitiba — Curitiba, Brazil
• NIX.CZ - Neutral Internet eXchange for the Czech Republic — Prague, Czech Republic
• IX.br (PTT.br) Natal — Natal, Brazil