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

AS12213

ASN

ARIN

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS12213

NameCNSQ-AS12213

OrganisationCentersquare

Country –

RIRARIN

Allocated20.10.2017

Network Overview

IPv4 Prefixes36

IPv6 Prefixes15

Upstreams (Transit)8

Downstreams (Customers)36

BGP Peers2

AS Path (BGP neighbours)

Upstreams (Transit)

AS137409GSL Networks Pty LTD AS25091IP-Max SA AS2686AT&T Enterprises, LLC AS3356Lumen (Level 3)AS49915Megaport (UK) Limited AS6461Zayo Bandwidth+2

AS12213CNSQ-AS12213

Downstreams (Customers)

AS10493Grand Central Networks Inc.AS13690American Medical Response, Inc.AS1379SINCH INTERCONNECT LLC AS14132Blue Matrix I LLC AS15248Metaswitch Networks Corp.AS16910Farm Credit Financial Partners, Inc.+30

Upstreams (Transit) (8)

AS137409GSL Networks Pty LTD

AS25091IP-Max SA

AS2686AT&T Enterprises, LLC

AS3356Lumen (Level 3)

AS49915Megaport (UK) Limited

AS6461Zayo Bandwidth

AS6939Hurricane Electric LLC

AS7018AT&T Enterprises, LLC

Downstreams (Customers) (36)

AS10493Grand Central Networks Inc.

AS13690American Medical Response, Inc.

AS1379SINCH INTERCONNECT LLC

AS14132Blue Matrix I LLC

AS15248Metaswitch Networks Corp.

AS16910Farm Credit Financial Partners, Inc.

AS18584Ankura Consulting Group LLC

AS18679internet4associations

AS197594Redstor Limited

AS20201Caryco Tech

AS21701Merative US L.P.

AS23280Venn Technology Corp

IPv4 Prefixes (36)

24.170.140.0/22

24.170.144.0/22

149.137.224.0/22

131.226.192.0/21

193.93.84.0/22

131.226.200.0/21

151.242.102.0/24

149.137.228.0/22

149.137.220.0/22

149.137.192.0/21

131.226.232.0/21

131.226.240.0/22

108.186.178.0/24

149.137.236.0/22

74.80.242.0/24

24.170.148.0/22

149.137.244.0/22

131.226.248.0/22

149.137.200.0/21

131.226.216.0/21

131.226.244.0/22

131.226.208.0/21

24.170.154.0/23

149.137.232.0/22

149.137.223.0/24

131.226.252.0/22

74.80.248.0/24

149.137.248.0/22

208.67.48.0/21

91.132.68.0/22

149.137.216.0/22

24.170.132.0/22

149.137.240.0/22

131.226.224.0/22

149.137.252.0/22

24.170.128.0/22

IPv6 Prefixes (15)

2604:7ac0:d00::/40

2604:7ac0:800::/40

2604:7ac0:400::/40

2604:7ac0:200::/40

2604:7ac0:500::/40

2604:7ac0:1100::/40

2604:7ac0:e00::/40

2604:7ac0:600::/40

2604:7ac0:700::/40

2604:7ac0:100::/40

2604:7ac0:1000::/40

2a09:bf80::/40

2604:7ac0::/40

2604:7ac0:300::/40

2604:7ac0:f00::/40

BGP Peers (2)

AS19151BroadbandONE, LLC

AS49544i3D.net B.V

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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.