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

AS21859

ASN

ARIN

RIR

1685

IPv4 Prefixes

156

IPv6 Prefixes

AS Information

ASNAS21859

NameZEN-ECN

OrganisationZenlayer Inc

Country –

RIRARIN

Allocated02.04.2013

Network Overview

IPv4 Prefixes1685

IPv6 Prefixes156

Upstreams (Transit)206

Downstreams (Customers)247

BGP Peers167

AS Path (BGP neighbours)

Upstreams (Transit)

AS10099China Unicom Global AS10133Chief Telecom Inc.AS1031PEER 1031 LLC AS1136KPN B.V.AS1221Telstra Limited AS12365JC LLC Sarkor-Telecom+200

AS21859ZEN-ECN

Downstreams (Customers)

AS10111Zeofast Network AS10122NETSTAR (SG) PTE. LTD.AS1054Zont LLC AS13150CATO NETWORKS LTD AS131613Sky Digital Co., Ltd.AS131618Carl International Information ltd.+241

Upstreams (Transit) (100)

AS10099China Unicom Global

AS10133Chief Telecom Inc.

AS1031PEER 1031 LLC

AS1136KPN B.V.

AS1221Telstra Limited

AS12365JC LLC Sarkor-Telecom

AS12389Rostelecom PJSC

AS12552GlobalConnect (IP-Only)

AS1257Tele2 Sverige AB

AS1267WIND TRE S.P.A.

AS12735TurkNet Iletisim Hizmetleri A.S.

AS12779IT.Gate S.p.A.

Downstreams (Customers) (100)

AS10111Zeofast Network

AS10122NETSTAR (SG) PTE. LTD.

AS1054Zont LLC

AS13150CATO NETWORKS LTD

AS131613Sky Digital Co., Ltd.

AS131618Carl International Information ltd.

AS131659NETEASE

AS132139VECLOUD LIMITED

AS132203Tencent

AS132337Axclusive

AS132825MYTEK TRADING PTY LTD

AS133012Cocoa Oriental Network Limited

IPv4 Prefixes (256)

98.98.128.0/23

162.128.59.0/24

128.14.95.0/24

156.59.32.0/21

128.1.194.0/24

107.155.46.0/23

129.227.41.0/24

156.59.224.0/24

109.105.209.0/24

162.128.216.0/24

185.226.196.0/24

45.128.145.0/24

128.14.124.0/23

104.166.191.0/24

128.1.236.0/24

210.87.206.0/24

103.229.117.0/24

43.242.137.0/24

69.17.101.0/24

66.167.151.0/24

98.98.232.0/24

148.135.196.0/23

128.1.197.0/24

162.128.234.0/24

156.59.254.0/24

128.1.232.0/24

128.14.67.0/24

128.1.60.0/24

162.128.211.0/24

122.10.140.0/22

129.227.69.0/24

162.128.196.0/24

122.10.245.0/24

162.128.199.0/24

108.165.196.0/24

162.128.208.0/24

58.69.38.0/24

191.101.148.0/24

128.14.63.0/24

107.155.7.0/24

122.10.196.0/23

156.59.250.0/24

107.151.252.0/23

69.33.118.0/24

82.41.130.0/24

98.98.194.0/24

129.227.248.0/23

98.98.64.0/23

69.28.59.0/24

23.90.170.0/23

23.91.102.0/23

162.128.176.0/24

98.98.74.0/24

128.1.104.0/22

156.59.136.0/21

101.33.13.0/24

45.192.245.0/24

45.251.139.0/24

23.248.176.0/23

98.98.28.0/24

107.151.145.0/24

162.128.231.0/24

104.166.164.0/24

129.227.11.0/24

103.225.85.0/24

129.227.236.0/22

156.59.104.0/22

89.21.87.0/24

66.253.18.0/24

103.206.21.0/24

128.14.176.0/23

128.1.1.0/24

103.206.23.0/24

45.43.38.0/23

162.128.157.0/24

128.1.155.0/24

162.128.180.0/24

82.23.171.0/24

45.43.40.0/23

107.155.19.0/24

128.1.51.0/24

192.169.120.0/22

164.18.240.0/24

107.151.129.0/24

199.182.235.0/24

154.197.45.0/24

128.1.28.0/24

156.59.119.0/24

98.98.142.0/23

172.247.38.0/24

128.1.64.0/24

156.226.165.0/24

23.251.98.0/23

103.193.126.0/24

162.128.63.0/24

162.128.249.0/24

209.177.88.0/23

156.59.173.0/24

107.151.152.0/24

66.253.29.0/24

128.14.218.0/23

129.227.104.0/21

66.167.201.0/24

104.166.130.0/23

128.14.128.0/19

162.128.145.0/24

23.251.96.0/24

162.221.196.0/24

176.56.39.0/24

108.165.119.0/24

98.98.255.0/24

156.59.117.0/24

128.1.130.0/24

162.128.51.0/24

98.96.212.0/22

98.98.32.0/24

107.151.154.0/24

82.25.35.0/24

23.236.97.0/24

192.253.210.0/24

107.150.115.0/24

162.128.32.0/24

98.96.216.0/23

129.227.52.0/22

98.96.192.0/22

107.151.169.0/24

98.98.146.0/23

128.1.55.0/24

192.254.80.0/20

107.155.21.0/24

45.137.8.0/24

172.247.32.0/24

104.166.188.0/23

128.14.104.0/24

98.96.220.0/24

128.1.139.0/24

98.98.162.0/24

98.96.252.0/22

94.154.120.0/24

151.242.192.0/23

156.59.200.0/23

31.99.202.0/24

192.169.104.0/22

98.98.24.0/23

162.128.164.0/24

128.1.248.0/24

108.165.138.0/24

118.26.56.0/24

50.114.197.0/24

128.14.189.0/24

151.242.193.0/24

128.1.68.0/23

178.83.199.0/24

151.240.28.0/24

37.202.222.0/24

107.155.10.0/24

23.90.186.0/23

128.1.239.0/24

104.234.11.0/24

45.81.129.0/24

128.1.35.0/24

38.33.154.0/24

162.128.47.0/24

216.132.101.0/24

193.118.36.0/22

38.33.153.0/24

98.98.239.0/24

82.152.176.0/23

162.128.109.0/24

45.124.254.0/24

104.166.176.0/22

128.1.100.0/24

65.255.45.0/24

213.139.235.0/24

23.236.109.0/24

156.59.74.0/23

129.227.180.0/22

128.1.189.0/24

128.1.224.0/24

69.17.5.0/24

128.14.55.0/24

66.167.144.0/24

154.41.85.0/24

38.28.244.0/24

69.17.15.0/24

98.98.120.0/21

98.98.225.0/24

128.14.3.0/24

23.251.120.0/24

148.135.204.0/23

107.148.177.0/24

129.227.124.0/24

162.128.105.0/24

144.31.44.0/24

151.243.101.0/24

103.215.125.0/24

178.83.100.0/24

104.166.183.0/24

172.87.25.0/24

209.177.81.0/24

192.254.95.0/24

65.255.32.0/24

107.151.130.0/24

23.236.116.0/24

107.151.137.0/24

98.96.204.0/22

107.151.144.0/24

66.253.20.0/24

154.198.164.0/24

45.132.236.0/24

84.75.215.0/24

169.197.104.0/24

128.14.220.0/22

192.254.85.0/24

103.206.22.0/24

129.227.12.0/24

122.10.222.0/24

128.1.21.0/24

82.41.99.0/24

129.227.96.0/23

103.239.103.0/24

154.46.26.0/24

82.27.124.0/24

151.244.188.0/24

169.197.108.0/24

104.166.190.0/24

36.255.195.0/24

45.40.58.0/24

98.98.100.0/24

98.98.4.0/23

162.128.227.0/24

128.1.107.0/24

82.26.87.0/24

122.10.244.0/24

66.253.31.0/24

104.166.167.0/24

45.194.112.0/23

107.155.8.0/24

107.151.160.0/24

156.59.228.0/22

128.14.212.0/23

65.255.34.0/24

128.1.213.0/24

107.148.188.0/24

66.253.19.0/24

162.128.102.0/24

77.111.108.0/24

209.177.85.0/24

199.190.46.0/23

45.132.237.0/24

128.14.190.0/23

154.201.1.0/24

128.14.182.0/24

128.14.159.0/24

128.14.74.0/24

162.128.245.0/24

IPv6 Prefixes (156)

2604:980:e032::/48

2602:ffe4:c42::/48

2a10:3c0:4::/48

2602:ffe4:c5b::/48

2602:ffe4:c5d::/48

2602:ffe4:c14::/48

2a0b:21c0:b000::/36

2403:8300:e02::/48

2604:980:e006::/48

2604:980:e009::/48

2a0b:21c0:8000::/36

2604:980:a000::/36

2602:ffe4:c6c::/48

2604:980:5000::/36

2602:ffe4:c37::/48

2602:ffe4:c40::/48

2602:ffe4:c26::/48

2a0b:21c1:6008::/48

2604:980:e035::/48

2a10:3c0:5::/48

2602:ffe4:c79::/48

2602:ffe4:c4b::/48

2602:ffe4:800::/38

2a0b:21c0:5000::/36

2604:980:7003::/48

2602:ffe4:c07::/48

2602:ffe4:c21::/48

2602:ffe4:c3b::/48

2602:ffe4:c64::/48

2604:980:3008::/48

2607:a400::/32

2604:980:e000::/48

2604:980:e010::/48

2602:ffe4:c4a::/48

2602:ffe4:c1c::/48

2a0b:21c1:6011::/48

2602:ffe4:c01::/48

2602:ffe4:c13::/48

2602:ffe4:c09::/48

2602:ffe4:c7b::/48

2604:980:7005::/48

2602:ffe4:c27::/48

2602:ffe4:c50::/48

2602:ffe4:c6e::/48

2602:ffe4:c3e::/48

2602:ffe4:c70::/48

2604:980:d000::/36

2604:980:1000::/36

2602:ffe4:c52::/48

2403:8300:e08::/46

2602:ffe4:ca0::/48

2602:ffe4::/38

2602:ffe4:c45::/48

2604:980:e00d::/48

2a0b:21c0:e000::/36

2602:ffe4:c6d::/48

2a13:9500:aa::/48

2602:ffe4:c9e::/48

2604:980:e007::/48

2a0b:21c1:602d::/48

2602:ffe4:c41::/48

2a0c:6a80::/29

2604:980:8000::/36

2602:ffe4:c54::/48

2602:ffe4:c9d::/48

2602:ffe4:c72::/48

2602:ffe4:c49::/48

2602:ffe4:c0a::/48

2a10:3c0:3::/48

2604:980:e00c::/48

2a0b:21c1:601b::/48

2607:a400:5::/48

2602:ffe4:c16::/48

2604:980:e005::/48

2403:8300:e00::/48

2a05:2ac0::/29

2604:980:e03e::/48

2602:ffe4:400::/38

2a0b:21c1:602f::/48

2a0b:21c1:3000::/36

2602:ffe4:c22::/48

2602:ffe4:c05::/48

2602:ffe4:c4e::/48

2a0b:21c1:6010::/48

2602:ffe4:c1a::/48

2602:ffe4:401::/48

2602:ffe4:c02::/48

2604:980:e034::/48

2604:980:e004::/48

2a0b:21c0:7000::/36

2a07:db01:5::/48

2404:ff40:2000::/36

2a0b:21c0:6000::/36

2602:ffe4:c20::/48

240d:c010:14c::/48

2a0b:21c0:1005::/48

2a0b:21c0:2000::/36

2604:980:e002::/48

2404:3700::/48

2a0b:21c1:6009::/48

2602:ffe4:c4f::/48

2602:ffe4:c06::/48

2602:ffe4:c4d::/48

2403:8300:e04::/47

2602:ffe4:3::/48

2602:ffe4:c11::/48

2602:ffe4:c0b::/48

2a0b:21c1:1000::/36

2a0b:21c0:4000::/36

2604:980:e008::/48

2602:ffe4:c1f::/48

2604:980:9000::/36

240d:c010:14b::/48

2602:ffe4:c58::/48

2602:ffe4:c53::/48

2602:ffe4:c34::/48

2602:ffe4:c9c::/48

2a0b:21c1:6012::/48

2604:980:e001::/48

2602:ffe4:c57::/48

2604:980:e00b::/48

2604:980:e00f::/48

2604:980:3000::/36

2602:ffe4:c4c::/48

2602:ffe4:c03::/48

2a0b:21c1:5000::/36

2a0b:21c0:3000::/36

2a0b:21c1:600a::/48

2a0b:21c0:c000::/36

2604:980:e00a::/48

2604:980:4000::/36

2604:980:e00e::/48

2604:980:2000::/36

2602:ffe4:c56::/48

2602:ffe4:c19::/48

2602:fed2:731a::/48

2602:ffe4:c65::/48

2602:ffe4:c0d::/48

2602:ffe4:c5e::/48

2a0b:21c0:f000::/36

2a0b:21c0:a000::/36

2602:ffe4:c18::/48

2602:ffe4:c51::/48

2a0b:21c0:1000::/36

2602:ffe4:c15::/48

2604:980:b000::/36

2a0b:21c0:9000::/36

2602:ffe4:c9f::/48

2604:980:7000::/36

2602:ffe4:c7a::/48

2602:ffe4:c3c::/48

2a0b:21c0:d000::/36

2602:ffe4:c44::/48

2a0b:21c0:1004::/48

2602:ffe4:c48::/48

2404:ff40:3000::/36

BGP Peers (167)

AS1103SURF B.V.

AS1140Stichting Internet Domeinregistratie Nederland

AS12637Seeweb s.r.l.

AS12859BIT BV

AS12969Ljósleiðarinn ehf (Sýn)

AS13004Serbian Open Exchange DOO

AS13237euNetworks GmbH

AS132847Network Solutions Group Pty Ltd

AS134823Sky Digital Co., Ltd.

AS142271EWS DS Networks Inc

AS14630Invesco Group Services, Inc.

AS14907Wikimedia Foundation Inc.

AS132203Tencent

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.