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

AS52561

ASN

–

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS52561

NameASN52561

OrganisationGFOUR TELECOM

Country

RIR–

Allocated14.02.2013

Abuse contactleandro@gfourtelecom.com.br

Network Overview

IPv4 Prefixes6

IPv6 Prefixes6

Upstreams (Transit)2

Downstreams (Customers)1

BGP Peers1

AS Path (BGP neighbours)

Upstreams (Transit)

AS264343Empasoft Ltda .Me AS274685Sernet

AS52561ASN52561

Downstreams (Customers)

AS268570YASUMITSU & YASUMITSU LTDA ME

Upstreams (Transit) (2)

AS264343Empasoft Ltda .Me

AS274685Sernet

Downstreams (Customers) (1)

AS268570YASUMITSU & YASUMITSU LTDA ME

IPv4 Prefixes (6)

177.86.76.0/23

186.227.122.0/23

177.86.76.0/22

186.227.120.0/23

177.86.78.0/23

186.227.120.0/22

IPv6 Prefixes (6)

2804:e8c::/33

2804:e8c::/34

2804:e8c:8000::/33

2804:e8c:c000::/34

2804:e8c:4000::/34

2804:e8c:8000::/34

BGP Peers (1)

AS271253LINK BRASIL TELECOMUNICACOES LTDA

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.