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

AS786

ASN

RIPE NCC

RIR

213

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS786

NameJANET

OrganisationJIPS-NOSC

Country –

RIRRIPE NCC

Allocated18.09.2002

Abuse contactirt@jisc.ac.uk

Network Overview

IPv4 Prefixes213

IPv6 Prefixes7

Upstreams (Transit)40

Downstreams (Customers)26

BGP Peers25

AS Path (BGP neighbours)

Upstreams (Transit)

AS12552GlobalConnect (IP-Only)AS1299Arelion (fka. Telia Carrier)AS13030Init7 (Switzerland) Ltd.AS137409GSL Networks Pty LTD AS15412Flag Telecom UK Limited AS20965GEANT Vereniging+34

AS786JANET

Downstreams (Customers)

AS15770Durham County Council AS196902Dudley Metropolitan Borough Council AS198032Cambridge Assessment AS198222West Herts College AS198863Cambridge University Press (Holdings) Limited AS198864Queen Mary University of London+20

Upstreams (Transit) (40)

AS12552GlobalConnect (IP-Only)

AS1299Arelion (fka. Telia Carrier)

AS13030Init7 (Switzerland) Ltd.

AS137409GSL Networks Pty LTD

AS15412Flag Telecom UK Limited

AS20965GEANT Vereniging

AS215638Cilix Limited

AS23764China Telecom Global

AS25091IP-Max SA

AS2856British Telecommunications

AS29075IELO-LIAZO SERVICES SAS

AS29169GANDI SAS

Downstreams (Customers) (26)

AS15770Durham County Council

AS196902Dudley Metropolitan Borough Council

AS198032Cambridge Assessment

AS198222West Herts College

AS198863Cambridge University Press (Holdings) Limited

AS198864Queen Mary University of London

AS199131City of York Council

AS199713MLL Telecom Ltd.

AS201773University of Warwick

AS202575University of Hull

AS206490Southend-on-Sea City Council

AS207039Satellite Applications Catapult Limited

IPv4 Prefixes (213)

161.73.0.0/16

128.16.0.0/16

87.38.202.0/24

192.133.244.0/24

212.121.192.0/19

192.173.128.0/21

144.124.0.0/17

192.41.112.0/20

128.240.0.0/16

136.156.176.0/21

192.171.192.0/21

129.169.0.0/16

146.169.0.0/16

134.83.0.0/16

138.250.0.0/15

160.9.0.0/16

194.35.241.0/24

130.88.0.0/16

192.82.153.0/24

146.176.0.0/16

192.12.72.0/24

141.241.0.0/16

155.198.0.0/16

164.11.0.0/16

83.138.32.0/21

149.170.248.0/21

157.228.0.0/20

146.179.0.0/16

81.87.0.0/16

192.153.213.0/24

137.222.0.0/16

147.143.0.0/16

136.156.88.0/22

192.173.1.0/24

192.88.9.0/24

141.163.64.0/19

192.190.202.0/24

193.39.80.0/21

140.97.0.0/16

149.170.192.0/21

149.170.32.0/21

129.234.0.0/16

159.86.0.0/16

141.163.96.0/20

149.170.96.0/21

193.39.172.0/22

149.170.112.0/21

192.149.111.0/24

192.18.195.0/24

192.42.100.0/24

192.35.172.0/24

149.170.48.0/21

149.155.0.0/16

136.148.224.0/19

146.227.0.0/16

139.166.0.0/16

136.148.104.0/21

136.148.112.0/20

138.40.0.0/16

139.184.128.0/17

158.143.0.0/16

139.184.0.0/16

192.150.184.0/24

159.86.128.0/18

149.170.64.0/21

77.241.76.0/22

128.41.0.0/18

193.107.116.0/22

136.156.0.0/19

143.234.0.0/16

129.11.0.0/16

131.251.0.0/16

194.36.121.0/24

149.170.104.0/21

128.40.0.0/16

193.138.86.0/24

138.38.0.0/16

134.36.0.0/16

192.156.162.0/24

192.195.105.0/24

161.74.0.0/16

192.190.201.0/24

149.170.80.0/21

128.232.0.0/16

193.32.22.0/24

136.156.160.0/21

192.76.8.0/21

149.170.0.0/21

192.65.28.0/23

194.80.0.0/14

212.121.0.0/19

147.188.0.0/16

149.170.120.0/21

152.71.0.0/16

148.197.0.0/16

150.204.0.0/16

143.52.0.0/15

193.133.28.0/23

163.167.0.0/16

192.68.153.0/24

139.222.0.0/16

131.227.0.0/16

146.87.0.0/16

149.170.216.0/21

139.133.0.0/16

161.76.0.0/16

163.1.0.0/16

194.36.152.0/21

194.36.2.0/23

149.170.160.0/21

129.67.0.0/16

194.35.186.0/24

192.84.76.0/22

137.50.0.0/16

134.225.0.0/16

131.231.0.0/16

192.107.168.0/24

193.37.240.0/21

158.94.0.0/19

147.197.0.0/16

137.44.0.0/18

149.170.208.0/21

45.88.80.0/23

92.245.224.0/19

136.148.32.0/19

157.140.0.0/16

192.195.118.0/24

192.41.104.0/21

143.167.0.0/16

192.94.235.0/24

194.66.0.0/16

137.73.0.0/16

192.100.78.0/24

134.219.0.0/16

46.254.200.0/21

143.210.0.0/16

139.153.0.0/16

149.170.72.0/21

146.191.0.0/16

129.215.0.0/16

139.184.0.0/17

193.37.225.0/24

192.76.6.0/23

158.223.0.0/16

192.124.46.0/24

192.195.116.0/23

163.119.0.0/17

128.86.0.0/16

129.31.0.0/16

144.82.0.0/16

193.1.237.0/24

192.41.103.0/24

185.255.108.0/22

137.195.0.0/16

130.159.0.0/16

194.60.218.0/24

131.111.0.0/16

192.108.120.0/24

144.32.0.0/16

134.151.0.0/16

193.130.15.0/24

192.195.42.0/23

160.5.248.0/21

193.142.216.0/24

130.209.0.0/16

192.76.16.0/20

192.173.2.0/23

148.88.0.0/16

195.194.0.0/15

192.171.128.0/18

192.84.5.0/24

137.108.0.0/16

152.78.0.0/16

194.35.93.0/24

152.105.0.0/16

149.170.88.0/21

128.243.0.0/16

149.170.240.0/21

192.173.4.0/24

149.170.40.0/21

143.117.0.0/16

149.170.16.0/21

155.245.0.0/16

130.246.0.0/16

194.36.1.0/24

149.170.184.0/21

87.32.4.0/24

149.170.8.0/21

149.170.24.0/21

148.79.0.0/16

193.60.0.0/14

137.253.0.0/16

212.219.0.0/16

192.84.75.0/24

194.32.32.0/20

134.220.0.0/16

158.94.224.0/19

193.39.212.0/24

138.253.0.0/16

144.173.0.0/16

158.125.0.0/16

136.148.160.0/19

146.97.0.0/16

193.38.143.0/24

194.35.192.0/19

149.170.136.0/21

129.12.0.0/16

141.163.0.0/18

192.76.32.0/22

149.170.128.0/21

161.112.0.0/16

192.41.128.0/22

87.42.73.0/24

IPv6 Prefixes (7)

2a0a:200::/29

2001:678:718::/48

2001:630::/32

2a05:b400::/32

2a0c:5bc0::/29

2a09:9180:fd::/48

2a03:aba0::/29

BGP Peers (25)

AS12779IT.Gate S.p.A.

AS13237euNetworks GmbH

AS18106Viewqwest Pte Ltd

AS1828PacketFabric / Unitas Global

AS200612Gulf Bridge International Inc.

AS207841Inferno Communications Ltd

AS24482SG.GS

AS25160Vorboss Limited

AS28792Public Internet Ltd

AS31122Digiweb ltd

AS3170VeloxServ Communications Ltd

AS31742Sota Solutions Ltd.

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.