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

AS266547

ASN

–

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS266547

NameASN266547

OrganisationFastsignal Com. e Serv. de informática Ltda

Country

RIR–

Allocated15.05.2017

Abuse contactdaniel@fastsignal.com.br

Network Overview

IPv4 Prefixes7

IPv6 Prefixes19

Upstreams (Transit)2

Downstreams (Customers)0

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS28343Unifique Telecomunicações SA AS53062ALT | GRUPO BRASIL TECPAR

AS266547ASN266547

Downstreams (Customers)

none

Upstreams (Transit) (2)

AS28343Unifique Telecomunicações SA

AS53062ALT | GRUPO BRASIL TECPAR

IPv4 Prefixes (7)

160.238.128.0/23

160.238.129.0/24

160.238.130.0/23

160.238.128.0/22

160.238.128.0/24

160.238.131.0/24

160.238.130.0/24

IPv6 Prefixes (19)

2804:3db0:a000::/36

2804:3db0:1000::/36

2804:3db0:d000::/36

2804:3db0::/32

2804:3db0:5000::/36

2804:3db0:7000::/36

2804:3db0:b000::/36

2804:3db0:8000::/36

2804:3db0:8000::/33

2804:3db0:e000::/36

2804:3db0:f000::/36

2804:3db0:c000::/36

2804:3db0:3000::/36

2804:3db0::/36

2804:3db0:2000::/36

2804:3db0::/33

2804:3db0:9000::/36

2804:3db0:6000::/36

2804:3db0:4000::/36

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.