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

AS46887

ASN

ARIN

RIR

802

IPv4 Prefixes

220

IPv6 Prefixes

AS Information

ASNAS46887

NameZAYO-CCF-AS46887

OrganisationZayo Bandwidth

Country –

RIRARIN

Allocated13.04.2009

Network Overview

IPv4 Prefixes802

IPv6 Prefixes220

Upstreams (Transit)5

Downstreams (Customers)1041

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS1299Arelion (fka. Telia Carrier)AS31769GiGstreem AS3356Lumen (Level 3)AS395748NetSpeed LLC AS6461Zayo Bandwidth

AS46887ZAYO-CCF-AS46887

Downstreams (Customers)

AS10326Worcester Polytechnic Institute AS10411Environmental Systems Research Institute AS1045ZS Associates, Inc AS10497IBRD AS10499Rochester Gas and Electric Corporation AS10554WESTERN UNIVERSITY OF HEALTH SCIENCES+1035

Upstreams (Transit) (5)

AS1299Arelion (fka. Telia Carrier)

AS31769GiGstreem

AS3356Lumen (Level 3)

AS395748NetSpeed LLC

AS6461Zayo Bandwidth

Downstreams (Customers) (100)

AS10326Worcester Polytechnic Institute

AS10411Environmental Systems Research Institute

AS1045ZS Associates, Inc

AS10497IBRD

AS10499Rochester Gas and Electric Corporation

AS10554WESTERN UNIVERSITY OF HEALTH SCIENCES

AS10558Biola University, Inc.

AS10583Connecticut Hospital Assoc.

AS10661Steadfast Financial LP

AS1067Hamilton County, Ohio

AS10690NETSCOUT SYSTEMS INC.

AS10694Monster Worldwide, Inc.

IPv4 Prefixes (256)

206.226.128.0/24

216.57.152.0/24

208.99.251.0/24

131.239.168.0/22

198.11.10.0/23

144.121.192.0/18

173.225.50.0/24

151.181.34.0/23

151.181.192.0/19

199.244.233.0/24

144.121.32.0/21

72.22.173.0/24

199.102.116.0/23

151.181.68.0/23

151.181.32.0/19

158.59.146.0/24

172.85.52.0/24

144.121.239.0/24

209.160.148.0/22

104.129.84.0/23

66.206.127.0/24

104.129.76.0/24

209.160.152.0/22

66.37.36.0/24

172.85.34.0/23

107.181.16.0/23

131.239.52.0/22

131.239.62.0/23

131.239.134.0/23

104.129.64.0/19

209.164.156.0/23

8.11.166.0/24

207.237.156.0/23

144.121.124.0/22

8.28.48.0/24

66.37.34.0/23

173.225.48.0/20

64.20.172.0/22

160.72.12.0/24

144.121.116.0/24

76.8.64.0/19

165.158.0.0/16

209.59.241.0/24

209.160.201.0/24

72.22.167.0/24

162.212.111.0/24

104.247.42.0/23

104.129.77.0/24

65.254.4.0/24

151.181.224.0/20

131.239.176.0/22

131.239.180.0/23

151.181.70.0/24

160.72.160.0/19

172.85.32.0/23

172.85.60.0/24

207.31.166.0/24

104.207.220.0/24

138.123.0.0/16

209.80.140.0/24

209.160.184.0/22

38.147.220.0/24

64.72.78.0/24

209.160.202.0/23

131.239.64.0/22

66.206.114.0/24

173.225.63.0/24

198.181.254.0/24

173.225.54.0/24

131.239.73.0/24

173.225.60.0/23

104.247.43.0/24

144.121.160.0/19

144.121.86.0/24

172.85.38.0/23

72.22.174.0/24

208.69.84.0/24

208.49.43.0/24

136.223.1.0/24

216.57.148.0/24

104.247.32.0/22

104.129.68.0/22

9.179.0.0/16

173.225.60.0/24

104.207.192.0/19

198.181.252.0/24

64.20.170.0/23

72.22.184.0/24

97.107.172.0/24

192.64.64.0/22

173.225.52.0/24

104.247.40.0/23

199.164.27.0/24

167.244.244.0/24

144.121.73.0/24

159.63.0.0/24

67.208.176.0/20

199.102.118.0/24

66.37.38.0/24

64.20.162.0/24

151.181.208.0/22

76.8.94.0/24

151.181.88.0/23

160.72.32.0/19

69.195.32.0/21

9.179.28.0/22

216.57.156.0/23

66.206.116.0/22

131.239.56.0/24

208.83.120.0/24

136.223.10.0/24

64.72.76.0/24

208.49.46.0/23

173.225.55.0/24

192.148.8.0/22

131.239.48.0/22

151.181.196.0/22

199.89.247.0/24

144.121.144.0/22

131.239.200.0/21

164.74.129.0/24

206.226.170.0/24

208.69.84.0/23

198.11.9.0/24

209.51.93.0/24

131.239.183.0/24

209.160.206.0/23

72.22.188.0/24

173.225.48.0/22

72.22.160.0/19

144.121.156.0/24

160.72.42.0/23

209.148.52.0/22

38.134.184.0/24

208.83.126.0/24

162.212.104.0/21

144.121.0.0/22

131.239.186.0/23

131.239.208.0/22

64.238.132.0/22

104.129.88.0/24

104.247.61.0/24

74.115.238.0/24

131.239.172.0/23

64.238.140.0/23

164.74.122.0/24

131.239.198.0/24

199.188.232.0/22

216.57.140.0/24

131.239.42.0/23

169.139.0.0/20

104.129.82.0/23

206.57.19.0/24

131.239.34.0/24

198.187.247.0/24

216.106.132.0/22

160.72.146.0/23

209.160.172.0/22

173.225.51.0/24

66.37.32.0/23

198.72.9.0/24

69.46.230.0/24

66.206.112.0/24

160.72.16.0/20

199.188.235.0/24

209.160.240.0/21

65.254.16.0/21

144.121.220.0/22

216.57.136.0/23

107.181.20.0/22

160.72.144.0/23

151.181.64.0/23

160.72.128.0/20

151.181.72.0/22

74.113.53.0/24

199.96.104.0/22

144.121.128.0/19

64.238.128.0/21

8.29.208.0/21

104.207.211.0/24

65.254.30.0/23

131.239.40.0/23

9.179.72.0/22

209.160.200.0/23

144.121.143.0/24

67.208.163.0/24

9.179.52.0/22

9.191.0.0/16

64.72.88.0/23

64.20.188.0/22

104.152.56.0/22

131.239.20.0/22

167.253.148.0/22

208.79.76.0/22

104.207.204.0/24

160.72.226.0/24

209.160.231.0/24

209.160.228.0/22

104.247.56.0/23

8.225.193.0/24

172.85.117.0/24

69.64.192.0/22

67.208.160.0/19

131.239.100.0/24

74.115.239.0/24

131.239.199.0/24

144.121.207.0/24

198.11.116.0/24

209.160.224.0/22

160.72.44.0/22

131.239.189.0/24

76.8.72.0/22

209.160.204.0/24

131.239.104.0/21

97.107.169.0/24

208.94.138.0/24

208.49.44.0/24

23.161.184.0/24

173.225.61.0/24

136.223.3.0/24

104.207.192.0/23

151.181.72.0/24

131.239.132.0/23

205.142.111.0/24

198.72.8.0/24

144.121.24.0/22

151.181.200.0/22

136.223.12.0/24

206.226.255.0/24

131.239.57.0/24

209.160.232.0/24

131.239.101.0/24

76.8.80.0/20

159.63.1.0/24

72.22.171.0/24

199.102.115.0/24

169.139.115.0/24

151.181.66.0/23

208.90.76.0/24

65.254.12.0/22

206.226.139.0/24

74.113.52.0/24

66.37.43.0/24

72.22.176.0/24

9.179.224.0/24

199.102.119.0/24

68.171.196.0/22

69.46.232.0/24

209.160.132.0/22

216.57.128.0/22

74.113.50.0/23

173.225.52.0/23

206.226.145.0/24

192.154.112.0/23

136.223.8.0/24

74.113.48.0/23

IPv6 Prefixes (220)

2604:1a00:48::/48

2605:a900:5000::/36

2604:1a00:1b::/48

2604:1a00:71::/48

2607:f7a8:1000::/39

2604:1a00:14::/48

2604:1a00:66::/48

2604:1a00:81::/48

2604:1a00:58::/48

2604:1a00:c5::/48

2604:1a00:f::/48

2605:a900:2007::/48

2604:1a00:1e::/48

2602:810:20c7::/48

2604:1a00:d7::/48

2605:a900:3018::/48

2604:1a00:89::/48

2604:1a00:85::/48

2604:1a00:96::/48

2604:1a00:19::/48

2605:a900:2000::/36

2604:1a00:83::/48

2604:1a00:8b::/48

2607:f7a8:163d::/48

2604:1a00:67::/48

2604:1a00:68::/48

2604:1a00:3c00::/48

2605:a900::/36

2604:1a00:77::/48

2607:f7a8:1600::/39

2604:1a00:91::/48

2604:1a00:86::/48

2605:a900:3000::/36

2607:f518:1000::/36

2607:f7a8:602::/48

2604:1a00:ad::/48

2604:1a00:10::/48

2604:1a00:1c::/48

2604:1a00:4e::/48

2604:1a00:cb::/48

2604:1a00:4c::/48

2605:a900:4804::/48

2604:1a00:c1::/48

2604:1a00:23::/48

2604:1a00:33::/48

2604:1a00:a3::/48

2604:1a00:bf::/48

2604:1a00:40::/48

2604:1a00:16::/48

2604:1a00:dc::/48

2604:1a00:13::/48

2604:1a00:6b::/48

2604:1a00:26::/48

2604:1a00:22::/48

2604:1a00:18::/48

2604:1a00:92::/48

2607:f7a8:400::/39

2604:1a00:69::/48

2605:a900:3::/48

2605:a900:1003::/48

2604:1a00:c3::/48

2604:1a00:56::/48

2604:1a00:c9::/48

2607:f7a8:1c00::/39

2604:1a00:7::/48

2604:1a00:8::/48

2604:1a00:e0::/48

2604:1a00:75::/48

2605:a900:4805::/48

2604:1a00:63::/48

2604:1a00:c8::/48

2604:1a00:ba::/48

2604:1a00:3e::/48

2604:1a00:3d::/48

2604:1a00:76::/48

2604:1a00:ca::/48

2604:1a00:bb::/48

2604:1a00:15::/48

2604:1a00:5e::/48

2604:1a00:db::/48

2604:1a00:4d::/48

2604:1a00:4f::/48

2604:1a00:49::/48

2604:1a00:c7::/48

2604:1a00:72::/48

2604:1a00:c6::/48

2604:1a00:73::/48

2605:a900:9::/48

2605:a900:7::/48

2604:1a00:a1::/48

2604:1a00:ae::/48

2605:a900:c::/48

2604:1a00:4a::/48

2604:1a00:5a::/48

2604:1a00:1::/48

2604:1a00:20::/48

2604:1a00:78::/48

2604:1a00:200::/40

2604:1a00:9f::/48

2605:a900:2016::/48

2605:a900:4807::/48

2604:1a00:3b::/48

2604:1a00:bd::/48

2605:a900:4007::/48

2604:1a00:b5::/48

2604:1a00:61::/48

2607:f518::/32

2604:1a00:a::/48

2604:1a00:50::/48

2604:1a00:38::/48

2605:a900:e::/48

2604:1a00:32::/48

2604:1a00:cf::/48

2620:11:c000::/48

2604:1a00:7b::/48

2604:1a00:6c::/48

2605:a900:4002::/48

2607:f7a8:a0b::/48

2604:1a00:8e::/48

2605:a900:3013::/48

2604:1a00:e::/48

2605:a900::/32

2605:a900:4803::/48

2604:1a00:d2::/48

2604:1a00:a9::/48

2604:1a00:65::/48

2607:f7a8:a00::/39

2604:1a00::/32

2604:1a00:55::/48

2604:200:1500::/48

2604:1a00:b6::/48

2604:1a00:2c::/48

2605:a900:1000::/36

2604:1a00:d::/48

2604:1a00:9e::/48

2604:1a00:de::/48

2604:1a00:64::/48

2604:1a00:8a::/48

2604:1a00:b7::/48

2604:1a00:41::/48

2604:1a00:b8::/48

2604:1a00:62::/48

2604:1a00:b::/48

2604:1a00:bc::/48

2604:1a00:9::/48

2604:1a00:3f::/48

2604:1a00:54::/48

2604:1a00:a8::/48

2607:f7a8::/32

2604:1a00:79::/48

2602:810:20c6::/48

2604:1a00:4b::/48

2607:f518:12d::/48

2604:1a00:9d::/48

2607:f518:135::/48

2604:1a00:d6::/48

2605:a900:1006::/48

2604:1a00:82::/48

2604:1a00:97::/48

2604:1a00:3a::/48

2604:1a00:9b::/48

2604:1a00:93::/48

2604:1a00:90::/48

2604:1a00:80::/48

2604:1a00:52::/48

2604:1a00:74::/48

2604:1a00:ab::/48

2604:1a00:98::/48

2604:1a00:2e::/48

2604:1a00:95::/48

2604:1a00:cd::/48

2604:1a00:30::/48

2620:131:6010::/48

2607:f7a8:c00::/39

2605:a900:4000::/36

2604:1a00:b2::/48

2604:1a00:af::/48

2604:1a00:12::/48

2604:1a00:35::/48

2604:1a00:7a::/48

2604:1a00:31::/48

2604:1a00:b3::/48

2604:1a00:7f::/48

2604:1a00:84::/48

2604:1a00:a00::/40

2604:1a00:7d::/48

2604:1a00:b4::/48

2604:1a00:70::/48

2604:1a00:c4::/48

2604:1a00:ac::/48

2604:1a00:60::/48

2604:1a00:47::/48

2605:a900:3019::/48

2670:d940:101::/48

2604:1a00:df00::/48

2604:1a00:2::/48

2604:1a00:6d::/48

2605:a900:9000::/48

2604:1a00:2d::/48

2604:1a00:aa::/48

2604:1a00:8d::/48

2604:1a00:c0::/48

2604:1a00:8c::/48

2605:a900:4006::/48

2604:1a00:be::/48

2604:1a00:6a::/48

2604:1a00:21::/48

2604:1a00:1d00::/48

2604:1a00:b1::/48

2605:a900:300f::/48

2604:1a00:53::/48

2604:1a00:9c::/48

2604:1a00:d0::/48

2604:1a00:c2::/48

2604:1a00:94::/48

2604:1a00:2a::/48

2604:1a00:e1::/48

2604:1a00:e3::/48

2604:1a00:e4::/48

2604:200:1f::/48

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.