AS11419 TELEFONICA BRASIL S.A

AS11419 is held by Telefônica Brasil S.A., the operator behind the Vivo brand and one of the largest carriers in Brazil. It is a secondary AS rather than the company's backbone: 31 IPv4 prefixes (about 36,000 addresses) and IPv6 out of 2804:e00::/32, behind a single observed neighbour.

What it's used for

Corporate and dedicated-access customer space, on the evidence available. The single observed neighbour tells you this is a leaf hanging off Telefônica's own network, not a peering AS. The prefixes sit in the Brazilian ranges Telefônica holds (179.131.0.0/16 space, 200.196.224.0/19, 200.229.192.0/20, 189.8.64.0/19) and are announced in /20 and /21 chunks.

What tips this away from consumer broadband is who the space is delegated to. One /24 inside 200.196.224.0/20 is registered in the Brazilian registry to Sociedade Unificada Paulista de Ensino Renovado Objetivo, the São Paulo education group behind Universidade Paulista, and the one reverse-DNS record recovered on 200.229.200.5 resolves to ticbrasil.com.br, a business domain rather than a subscriber pool. Provider space subdelegated to named corporate and institutional customers is what a carrier's enterprise/dedicated-link AS looks like. There is no dsl, pppoe or dynamic naming anywhere in the sample, which is what a Vivo residential access AS would be dense with.

Notable

Registro.br dates the AS to 1999 with a last change in 2019, and the holder record carries Telefônica Brasil's CNPJ, so the number has stayed inside the same corporate lineage through the Telesp-to-Vivo consolidation.

Most RDAP lookups on the individual prefixes failed. That is missing data, not clearance, and the corporate-customer reading rests on the two records that did resolve, so it is offered with less than full confidence.