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

AS10242

ASN

ARIN

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS10242

NameUSINTERNET

OrganisationUS Internet Corp

Country –

RIRARIN

Allocated19.05.1997

Network Overview

IPv4 Prefixes36

IPv6 Prefixes1

Upstreams (Transit)12

Downstreams (Customers)27

BGP Peers13

AS Path (BGP neighbours)

Upstreams (Transit)

AS1299Arelion (fka. Telia Carrier)AS137409GSL Networks Pty LTD AS174Cogent Communications, LLC AS25091IP-Max SA AS2914NTT America, Inc.AS32621Twin City VoIP, Inc.+6

AS10242USINTERNET

Downstreams (Customers)

AS16614Starwire Technologies, LLC AS20273WCCTA AS20382OA.NET AS22534CS Technologies AS26329InServer Networks AS27583Regis Corporation+21

Upstreams (Transit) (12)

AS1299Arelion (fka. Telia Carrier)

AS137409GSL Networks Pty LTD

AS174Cogent Communications, LLC

AS25091IP-Max SA

AS2914NTT America, Inc.

AS32621Twin City VoIP, Inc.

AS394256Tech Futures Interactive Inc.

AS52025ParadoxNetworks Limited

AS6939Hurricane Electric LLC

AS7575Australian Academic and Research Network (AARNet)

AS8220COLT

AS9002RETN Limited

Downstreams (Customers) (27)

AS16614Starwire Technologies, LLC

AS20273WCCTA

AS20382OA.NET

AS22534CS Technologies

AS26329InServer Networks

AS27583Regis Corporation

AS30325South Slope Cooperative Telephone Company

AS33362Wikstrom Telephone Company, Incorporated

AS35871Reynolds Cable, Inc

AS393892Mid Century Communications

AS394330LTD Broadband LLC

AS394907Northland Communications Inc.

IPv4 Prefixes (36)

162.222.52.0/22

216.17.64.0/19

216.126.212.0/23

216.17.70.0/24

216.17.32.0/19

207.153.0.0/18

50.93.240.0/20

23.88.128.0/19

192.152.24.0/23

165.75.192.0/24

216.17.1.0/24

50.93.248.0/21

162.219.228.0/22

206.55.176.0/20

165.75.194.0/24

64.202.240.0/21

72.50.193.0/24

74.188.0.0/18

67.220.0.0/19

64.202.248.0/22

216.17.0.0/24

204.57.232.0/21

216.17.0.0/19

204.209.14.0/23

174.141.192.0/20

204.209.48.0/22

24.152.128.0/18

204.209.13.0/24

68.168.160.0/19

72.50.192.0/19

208.73.100.0/22

199.185.130.0/23

50.93.244.0/23

192.104.34.0/24

174.141.200.0/21

198.74.4.0/22

IPv6 Prefixes (1)

2605:8400::/28

BGP Peers (13)

AS1003andrewnet

AS14907Wikimedia Foundation Inc.

AS18106Viewqwest Pte Ltd

AS1828PacketFabric / Unitas Global

AS19151BroadbandONE, LLC

AS200454Tomas Oliveira Valente Leite de Castro

AS24482SG.GS

AS34927iFog GmbH

AS35280F5 Networks SARL

AS36236NetActuate, Inc

AS394414E2W Solutions LLC

AS49544i3D.net B.V

AS852

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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.