Report for 263931

Name

R C ALMEIDA DA SILVA, BR

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

263931 R C ALMEIDA DA SILVA, BR

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS266195        ERIC BG COMUNICACAO MULTIMIDIA - ME, BR
    AS263346        Fonte Informatica ltda, BR
    AS262494        Virtex Telecom, BR

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
31849 AS263931       ORIGIN  Originate:       1536 /21.42  Transit:          0 /0.00  R C ALMEIDA DA SILVA, BR

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
28390 AS263931      R C ALMEIDA DA SILVA, BR                           5      1      0      4      1  20.00%


  Prefix               AS Path                              Aggregation Suggestion
  138.219.136.0/23     4777 2497 174 61568 269595 266195 263931   
  138.219.136.0/24     4777 2497 174 61568 269595 266195 263931 - Withdrawn - matching aggregate 138.219.136.0/23 4777 2497 174 61568 269595 266195 263931
  138.219.137.0/24     4608 7575 7195 262494 263931   
  138.219.138.0/24     4608 7575 7195 262494 263931   
  138.219.139.0/24     4777 2497 37468 263346 263931   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS263931   5 More Specifics   5 Total Advertisements   R C ALMEIDA DA SILVA, BR
    138.219.136.0/23              138.219.136.0/22
    138.219.136.0/24              138.219.136.0/22
    138.219.137.0/24              138.219.136.0/22
    138.219.138.0/24              138.219.136.0/22
    138.219.139.0/24              138.219.136.0/22

Whois Entry

whois: 402332

IANA has recorded AS263931 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS263931\n             % IP Client: 2401:2000:6660::13
              % Copyright (c) Nic.br - Use of this data is governed by the Use and
             % Privacy Policy at https://registro.br/upp . Distribution,
             % commercialization, reproduction, and use for advertising or similar
             % purposes are expressly prohibited.
             % 2026-03-31T11:26:40-03:00 - 2401:2000:6660::13
             
             aut-num:     AS263931
             owner:       R C ALMEIDA DA SILVA
             ownerid:     09.328.473/0001-97
             responsible: Raimundo Cristiano Almeida da Silva
             country:     BR
             owner-c:     RCASI51
             routing-c:   RCASI51
             abuse-c:     RCASI51
             created:     20150814
             changed:     20240816
             inetnum:     138.219.136.0/22
             inetnum:     2804:27f4::/32
             as-in:       from AS262494 100 accept ANY
             as-in:       from AS266195 100 accept ANY
             as-out:      to AS262494 announce AS263931
             as-out:      to AS266195 announce AS263931
             
             nic-hdl-br:  RCASI51
             person:      RC ALMEIDA DA SILVA
             e-mail:      cristiano.sec@gmail.com
             country:     BR
             created:     20131213
             changed:     20260115
             
             % Security and mail abuse issues should also be addressed to cert.br,
             % respectivelly to cert@cert.br and mail-abuse@cert.br
             %
             % whois.registro.br only accepts exact match queries for domains,
             % registrants, contacts, tickets, providers, IPs, and ASNs.