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

AS8075

ASN

ARIN

RIR

1171

IPv4 Prefixes

113

IPv6 Prefixes

AS Information

ASNAS8075

NameMICROSOFT-CORP-MSN-AS-BLOCK

OrganisationMicrosoft Corporation

Country –

RIRARIN

Allocated31.03.1997

Network Overview

IPv4 Prefixes1171

IPv6 Prefixes113

Upstreams (Transit)118

Downstreams (Customers)7

BGP Peers162

AS Path (BGP neighbours)

Upstreams (Transit)

AS1136KPN B.V.AS12310iNES GROUP SRL AS12389Rostelecom PJSC AS12552GlobalConnect (IP-Only)AS1257Tele2 Sverige AB AS12577MMC GmbH+112

AS8075MICROSOFT-CORP-MSN-AS-BLOCK

Downstreams (Customers)

AS3598Microsoft Corporation AS5761Microsoft Corporation AS58593Microsoft Azure China (Shanghai Blue Cloud)AS62540Drake Holdings LLC AS8068Microsoft Corporation AS8069Microsoft Corporation+1

Upstreams (Transit) (100)

AS1136KPN B.V.

AS12310iNES GROUP SRL

AS12389Rostelecom PJSC

AS12552GlobalConnect (IP-Only)

AS1257Tele2 Sverige AB

AS12577MMC GmbH

AS1267WIND TRE S.P.A.

AS1273Vodafone Group PLC

AS12735TurkNet Iletisim Hizmetleri A.S.

AS12956Telxius (Telefonica Global)

AS1299Arelion (fka. Telia Carrier)

AS13030Init7 (Switzerland) Ltd.

Downstreams (Customers) (7)

AS3598Microsoft Corporation

AS5761Microsoft Corporation

AS58593Microsoft Azure China (Shanghai Blue Cloud)

AS62540Drake Holdings LLC

AS8068Microsoft Corporation

AS8069Microsoft Corporation

AS8070Microsoft Corporation

IPv4 Prefixes (256)

81.22.128.0/24

164.75.131.0/24

135.56.2.0/24

23.103.64.0/18

213.218.36.0/24

20.157.0.0/16

202.89.224.0/21

111.221.16.0/21

198.91.39.0/24

115.42.47.0/24

67.210.98.0/23

195.43.44.0/24

192.94.1.0/24

192.133.85.0/24

141.206.200.0/24

113.197.64.0/24

48.160.0.0/12

130.20.0.0/24

57.50.0.0/16

170.39.86.0/24

48.222.0.0/15

161.195.155.0/24

37.228.121.0/24

155.60.232.0/24

199.229.53.0/24

62.164.204.0/23

170.114.57.0/24

51.111.0.0/16

40.249.0.0/16

103.58.119.0/24

135.56.0.0/24

204.239.11.0/24

194.150.192.0/24

153.45.169.0/24

20.74.128.0/17

69.52.224.0/24

9.149.0.0/16

137.116.0.0/16

40.126.192.0/23

135.255.0.0/16

156.23.0.0/16

156.45.236.0/24

157.176.0.0/16

153.45.174.0/24

91.244.200.0/24

199.229.48.0/24

94.143.106.0/24

40.110.0.0/15

69.52.200.0/24

192.40.79.0/24

98.142.122.0/23

185.12.10.0/24

212.1.223.0/24

62.231.53.0/24

124.252.0.0/16

167.186.0.0/16

135.4.0.0/16

45.66.80.0/24

74.144.0.0/12

141.193.248.0/24

9.141.0.0/16

153.45.183.0/24

176.98.39.0/24

9.140.0.0/16

9.135.0.0/16

66.94.52.0/24

161.131.217.0/24

204.152.95.0/24

165.125.52.0/24

194.61.106.0/24

193.17.116.0/23

199.229.50.0/24

212.1.218.0/24

185.52.203.0/24

185.154.80.0/24

130.33.0.0/16

66.178.149.0/24

69.52.205.0/24

150.171.254.0/24

199.60.28.0/24

142.147.61.0/24

130.17.73.0/24

13.118.0.0/15

68.218.0.0/15

165.15.0.0/16

66.185.140.0/24

199.103.90.0/23

153.45.171.0/24

74.116.255.0/24

156.45.225.0/24

52.112.0.0/14

198.8.73.0/24

102.133.128.0/17

138.32.111.0/24

137.70.152.0/24

145.69.72.0/22

208.88.70.0/24

152.148.0.0/16

40.218.0.0/16

205.135.212.0/24

51.56.0.0/14

143.241.0.0/16

135.240.0.0/16

141.193.234.0/24

40.68.0.0/14

129.135.0.0/16

146.225.0.0/21

165.99.141.0/24

159.105.18.0/24

205.132.192.0/23

204.194.56.0/22

4.176.0.0/12

148.7.0.0/16

194.180.131.0/24

155.60.233.0/24

117.121.247.0/24

161.195.96.0/22

48.184.0.0/13

138.203.0.0/16

51.124.0.0/16

135.231.0.0/16

122.149.0.0/16

135.221.0.0/16

135.119.0.0/16

20.0.0.0/11

155.60.234.0/24

20.48.0.0/12

20.45.128.0/20

203.32.11.0/24

130.115.252.0/22

91.216.184.0/24

206.203.89.0/24

72.152.0.0/14

104.204.254.0/24

165.125.49.0/24

203.10.29.0/24

57.243.0.0/16

192.100.112.0/21

51.1.0.0/16

161.221.4.0/24

82.87.0.0/16

13.242.0.0/15

206.203.90.0/24

40.108.0.0/19

199.30.16.0/20

137.70.154.0/24

9.145.0.0/16

193.8.43.0/24

57.41.0.0/16

208.122.61.0/24

193.135.41.0/24

131.163.0.0/16

85.210.0.0/15

68.220.0.0/15

164.47.80.0/23

156.29.16.0/24

23.102.0.0/16

66.185.139.0/24

40.66.128.0/17

9.231.0.0/16

170.170.127.0/24

104.40.0.0/13

157.252.0.0/16

156.45.233.0/24

129.35.19.0/24

135.115.0.0/16

198.47.13.0/24

207.46.36.0/22

20.40.0.0/13

199.21.128.0/24

170.176.147.0/24

202.14.81.0/24

199.189.37.0/24

138.32.114.0/24

85.204.120.0/23

216.238.141.0/24

209.127.190.0/24

91.242.222.0/24

216.9.196.0/24

69.198.0.0/15

64.72.206.0/24

9.129.0.0/16

91.244.201.0/24

192.40.76.0/24

91.245.215.0/24

153.45.185.0/24

128.85.0.0/16

145.46.161.0/24

135.56.8.0/24

207.46.64.0/18

194.50.23.0/24

161.221.6.0/24

69.52.225.0/24

170.39.85.0/24

103.131.148.0/24

103.131.149.0/24

51.136.0.0/15

135.246.0.0/16

207.46.128.0/17

192.100.128.0/22

205.135.213.0/24

68.240.0.0/13

203.21.152.0/24

158.53.0.0/16

135.248.0.0/16

13.104.0.0/14

165.125.48.0/24

142.147.54.0/24

128.36.15.0/24

203.10.31.0/24

143.209.0.0/16

212.103.45.0/24

20.135.0.0/16

131.176.228.0/22

40.159.0.0/16

151.129.0.0/16

9.143.0.0/16

192.80.246.0/24

48.216.0.0/14

185.222.140.0/22

20.192.0.0/10

178.255.242.0/24

66.185.137.0/24

173.241.44.0/24

131.145.0.0/16

4.144.0.0/12

135.247.0.0/16

161.221.3.0/24

192.197.157.0/24

74.176.0.0/14

130.107.0.0/16

130.17.86.0/24

185.157.16.0/22

198.167.255.0/24

203.10.28.0/24

20.46.192.0/19

40.80.0.0/12

202.27.49.0/24

23.103.160.0/20

170.75.176.0/24

40.127.0.0/19

193.189.114.0/23

111.221.64.0/18

52.148.0.0/14

13.254.0.0/24

45.157.47.0/24

203.32.10.0/24

157.95.0.0/16

45.143.224.0/24

104.193.12.0/24

138.128.250.0/24

163.199.84.0/23

165.17.0.0/16

104.208.0.0/13

195.105.26.0/24

209.143.213.0/24

IPv6 Prefixes (113)

2620:12c:9005::/48

2602:f742:3::/48

2a00:1c68::/29

2620:147:d11::/48

2a03:52a0:183::/48

2001:df0:7::/48

2602:fdeb:63::/48

2603:1062:4::/48

2620:1ec:9::/48

2a14:67c2:575::/48

2001:67c:4f8::/48

2620:119:5077::/48

2602:fdeb:54::/48

2a05:f500:2::/48

2607:9240:4a::/48

2404:f802::/31

2a10:dac0:96::/48

2a0c:4144:200::/48

2a05:c341::/48

2620:7d:e::/48

2001:3bc0:b1d::/48

2a04:9a00:1484::/48

2620:1ec::/36

2a14:4e87:1000::/48

2a14:d300:3::/48

2606:e540:c01::/48

2a04:b0c0:11::/48

2a02:d21::/48

2a0f:7803:fc50::/48

2a07:54c4:1756::/48

2603:1061:6::/48

2607:9240:47::/48

2a01:111:2000::/36

2407:30c0:184::/48

2a14:67c2:510::/48

2620:1ec:25::/48

2607:9240:44::/48

2001:df0:d7::/48

2602:f8d5:a3::/48

2001:df0:59c0::/48

2a04:9a00:1488::/48

2602:fc31:4::/48

2a04:b0c0:12::/48

2801:80:1d0::/48

2a04:9a00:148c::/48

2620:12c:90b0::/48

2607:9240:49::/48

2603:1062:3::/48

2001:698::/48

2602:f742:2::/48

2620:bc:2000::/48

2602:f742:3f::/48

2a12:fc0::/48

2a0b:9e80:2000::/48

2607:9240:41::/48

2602:fdeb:52::/48

2602:f73e::/48

2606:e540:c04::/48

2607:33c0:a0::/48

2607:9240:48::/48

2620:7d:d::/48

2602:f8d5:a8::/48

2620:10c:5001::/48

2a01:111::/32

2404:f800::/32

2a04:b0c0:10::/48

2620:b1:e000::/48

2607:9240:40::/48

2602:f742:5::/48

2a14:7583:e1a0::/48

2602:812:200a::/48

2602:fdeb:53::/48

2407:30c0:186::/48

2620:12c:90c1::/48

2001:698:1::/48

2402:7d80:8888::/48

2602:f742:1::/48

2a04:9a00:1480::/48

2a14:4b41:1300::/48

2602:f8d5:a1::/48

2a07:3502:1191::/48

2602:fdeb:61::/48

2a0c:61c7:ace::/48

2a01:111:f000::/36

2602:f8d5:a0::/48

2001:df0:d9::/48

2602:fdeb:55::/48

2602:fdeb:62::/48

2a01:111:4004::/48

2a04:b0c0:13::/48

2602:fdeb:64::/48

2602:f8c6:20::/48

2602:f36c:fff::/48

2603:1000::/25

2620:0:30::/45

2602:f8d5:a6::/48

2a12:fc7:ffef::/48

2604:e700:41::/48

2602:f742::/48

2a05:e100:a::/48

2a01:111:4000::/36

2602:f7be:102::/48

2a0e:b107:27c7::/48

2620:7d:f::/48

2402:7d80::/48

2602:801:600a::/48

2001:df0:d8::/48

2607:9240:43::/48

2401:ef40::/48

2602:fdeb:50::/48

2606:e540:c00::/48

2604:d890:3::/48

2606:50c0:c0de::/48

BGP Peers (162)

AS1103SURF B.V.

AS1140Stichting Internet Domeinregistratie Nederland

AS12637Seeweb s.r.l.

AS12779IT.Gate S.p.A.

AS12859BIT BV

AS12969Ljósleiðarinn ehf (Sýn)

AS13237euNetworks GmbH

AS132847Network Solutions Group Pty Ltd

AS134823Sky Digital Co., Ltd.

AS13786Seaborn (Seabras USA, LLC)

AS1403EBOX

AS14630Invesco Group Services, Inc.