An Autonomous System Number (ASN) is a unique number assigned to a network in global internet routing. Every provider that participates directly on the internet has its own ASN (e.g. AS15169 for Google).

What are upstreams, peers and prefixes?

Upstreams are transit providers through which an AS reaches the internet. Peers are networks with direct traffic exchange. Prefixes are the IP address ranges the AS announces via BGP.

Where does the ASN data come from?

The data comes from the official RDAP services of the RIRs (RIPE, ARIN, etc.) and from RIPEstat (prefixes and neighbour ASNs).

ASN Lookup – Networks, Upstreams and Prefixes

AS1251

ASN

–

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS1251

NameASN1251

OrganisationFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULO

Country

RIR–

Allocated12.11.1999

Abuse contactjorge@usp.br

Network Overview

IPv4 Prefixes40

IPv6 Prefixes1

Upstreams (Transit)8

Downstreams (Customers)15

BGP Peers26

AS Path (BGP neighbours)

Upstreams (Transit)

AS137409GSL Networks Pty LTD AS15830Equinix, Inc.AS1916RNP - Rede Nacional de Ensino e Pesquisa AS20080Florida International University AS37468Angola Cables AS6057Administracion Nacional de Telecomunicaciones+2

AS1251ASN1251

Downstreams (Customers)

AS11097EMPRESA BRASILEIRA DE PESQUISA AGROPECUARIA AS1916RNP - Rede Nacional de Ensino e Pesquisa AS262742Fundação Universidade Federal do ABC - UFABC AS263605Centro Nacional de Pesquisa em Energia e Materiais AS265478Instituto Presbiteriano Mackenzie AS271755UNIVERSIDADE DE SAO PAULO+9

Upstreams (Transit) (8)

AS137409GSL Networks Pty LTD

AS15830Equinix, Inc.

AS1916RNP - Rede Nacional de Ensino e Pesquisa

AS20080Florida International University

AS37468Angola Cables

AS6057Administracion Nacional de Telecomunicaciones

AS61626UNIVERSIDADE ESTADUAL DE PONTA GROSSA

AS7195EdgeUno

Downstreams (Customers) (15)

AS11097EMPRESA BRASILEIRA DE PESQUISA AGROPECUARIA

AS1916RNP - Rede Nacional de Ensino e Pesquisa

AS262742Fundação Universidade Federal do ABC - UFABC

AS263605Centro Nacional de Pesquisa em Energia e Materiais

AS265478Instituto Presbiteriano Mackenzie

AS271755UNIVERSIDADE DE SAO PAULO

AS28222INSTITUTO NACIONAL DE PESQUISAS ESPACIAIS

AS28571UNIVERSIDADE DE SAO PAULO

AS52888UNIVERSIDADE FEDERAL DE SAO CARLOS

AS52890Centro Integrado de Telemática do Exército

AS52914Associação Educacional Nove de Julho

AS52992UNIVERSIDADE FEDERAL DE SAO PAULO

AS53166

AS53187

AS61612

IPv4 Prefixes (40)

200.136.176.0/24

200.136.16.0/20

200.144.125.0/24

200.10.178.0/23

200.136.80.0/24

200.6.42.0/24

200.10.178.0/24

200.19.228.0/23

200.19.80.0/20

143.108.0.0/16

143.108.12.0/24

200.136.160.0/20

200.144.78.0/23

143.108.8.0/22

200.136.26.0/23

200.136.184.0/22

200.144.124.0/24

200.136.96.0/20

200.136.32.0/19

200.18.52.0/24

200.18.252.0/24

200.18.48.0/20

200.18.240.0/20

200.144.68.0/22

200.144.128.0/20

200.144.119.0/24

200.136.110.0/24

200.144.64.0/22

200.18.48.0/23

200.136.64.0/19

200.144.32.0/20

200.10.179.0/24

200.18.110.0/23

200.136.88.0/24

200.144.118.0/24

200.144.120.0/22

200.19.224.0/22

200.144.126.0/23

200.136.182.0/23

200.144.80.0/20

IPv6 Prefixes (1)

2001:12d8::/32

BGP Peers (26)

AS13786Seaborn (Seabras USA, LLC)

AS14840BR.DIGITAL

AS198150SIACOM JSC

AS199524Gcore S.A.

AS22548Núcleo de Informação e Coordenação do Ponto BR - NIC.BR

AS24482SG.GS

AS262427Invista Net Provedor de Acesso Ltda

AS263152MIGO TELECOM

AS263237PowerHost Telecom SPA

AS264479Turbozone Internet

AS271253LINK BRASIL TELECOMUNICACOES LTDA

AS28624Oops Internet

AS271755UNIVERSIDADE DE SAO PAULO

AS52914Associação Educacional Nove de Julho

AS52992UNIVERSIDADE FEDERAL DE SAO PAULO

AS53166

AS61612

My IP ASN Lookup IP Lookup WHOIS DNS Lookup

What is an ASN?

An Autonomous System Number (ASN) is a unique number assigned to a network on the internet. Upstreams are the transit providers through which the AS reaches the internet. Peers are networks with which direct traffic exchange takes place. Prefixes are the IP address ranges that the AS announces to the internet. Data via RIPE NCC RDAP and RIPEstat API.