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

AS19108

ASN

ARIN

RIR

409

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS19108

NameSUDDENLINK-COMMUNICATIONS

OrganisationOptimum

Country –

RIRARIN

Allocated20.11.2000

Network Overview

IPv4 Prefixes409

IPv6 Prefixes26

Upstreams (Transit)11

Downstreams (Customers)73

BGP Peers5

AS Path (BGP neighbours)

Upstreams (Transit)

AS1299Arelion (fka. Telia Carrier)AS174Cogent Communications, LLC AS29838Atlantic Metro Communications II, Inc.AS3303Swisscom (Schweiz) AG AS3356Lumen (Level 3)AS41095IPTP LTD+5

AS19108SUDDENLINK-COMMUNICATIONS

Downstreams (Customers)

AS11135Cross Development/Montgomery LP AS12231Conway Corporation AS13869Team Worldwide AS14623Lubbock Christian University AS18824Plains Cotton Cooperative Association AS18981SUPERNet II+67

Upstreams (Transit) (11)

AS1299Arelion (fka. Telia Carrier)

AS174Cogent Communications, LLC

AS29838Atlantic Metro Communications II, Inc.

AS3303Swisscom (Schweiz) AG

AS3356Lumen (Level 3)

AS41095IPTP LTD

AS5650Verizon (fka. Frontier)

AS60068Datacamp Limited (CDN77 / DataPacket)

AS6327Shaw Communications

AS6939Hurricane Electric LLC

AS8220COLT

Downstreams (Customers) (73)

AS11135Cross Development/Montgomery LP

AS12231Conway Corporation

AS13869Team Worldwide

AS14623Lubbock Christian University

AS18824Plains Cotton Cooperative Association

AS18981SUPERNet II

AS20020Power Systems Computers

AS22068Tyler Junior College

AS22191Wilkes Communications, Inc.

AS22752MRC Global (US) Inc.

AS25846Cloudnium LLC

AS26289Southside Bancshares, Inc.

IPv4 Prefixes (256)

69.59.73.0/24

207.254.250.0/24

208.180.51.0/24

74.195.128.0/18

66.76.240.0/20

173.219.144.0/23

173.219.96.0/24

75.109.160.0/19

24.121.128.0/17

74.192.46.0/24

24.156.96.0/20

208.180.53.0/24

24.156.64.0/18

50.24.0.0/17

208.91.57.0/24

208.180.128.0/24

47.219.128.0/17

64.72.47.0/24

47.214.128.0/18

24.156.112.0/20

64.72.36.0/24

24.54.114.0/24

75.111.0.0/18

75.108.186.0/24

50.24.128.0/17

74.194.160.0/20

24.156.15.0/24

47.218.16.0/22

47.218.20.0/22

66.76.192.0/20

47.216.0.0/17

64.234.16.0/24

64.72.55.0/24

207.254.248.0/24

64.72.45.0/24

75.111.96.0/20

69.59.82.0/24

208.180.34.0/24

47.215.128.0/17

47.223.128.0/17

74.197.0.0/17

47.213.112.0/20

64.139.234.0/24

173.218.208.0/20

173.216.124.0/22

74.195.16.0/21

64.234.0.0/23

173.218.80.0/22

24.32.24.0/21

47.209.192.0/19

47.218.0.0/15

75.109.108.0/24

205.201.93.0/24

24.75.124.0/24

47.217.192.0/18

47.218.8.0/22

173.216.0.0/15

173.219.43.0/24

208.180.128.0/19

66.76.0.0/16

75.110.111.0/24

69.59.104.0/24

75.108.80.0/20

47.215.128.0/18

64.139.227.0/24

75.108.120.0/21

173.218.44.0/22

74.193.0.0/16

74.196.32.0/19

173.218.0.0/16

192.101.32.0/24

209.209.185.0/24

24.206.216.0/22

74.196.0.0/19

173.218.240.0/21

24.54.118.0/24

47.221.128.0/17

208.180.0.0/16

74.192.0.0/19

47.217.0.0/16

75.108.244.0/24

47.218.12.0/22

24.121.83.0/24

47.214.40.0/22

207.254.254.0/24

47.209.128.0/17

198.163.214.0/24

173.216.0.0/16

173.218.251.0/24

205.201.122.0/24

24.54.116.0/24

50.27.128.0/19

208.180.22.0/24

74.192.0.0/15

75.110.133.0/24

47.214.36.0/22

173.80.0.0/17

24.32.130.0/24

47.209.80.0/20

173.219.3.0/24

47.209.64.0/18

74.194.64.0/20

205.201.123.0/24

173.219.4.0/24

24.224.56.0/24

66.76.224.0/20

173.218.40.0/22

74.197.237.0/24

66.76.174.0/24

64.72.57.0/24

75.109.192.0/19

75.109.248.0/22

74.195.128.0/17

64.139.246.0/24

208.180.205.0/24

47.219.176.0/20

47.212.192.0/20

24.224.36.0/23

74.196.160.0/19

24.206.224.0/19

47.214.192.0/18

66.205.96.0/19

24.224.55.0/24

50.27.0.0/19

47.223.0.0/17

50.27.128.0/17

66.76.176.0/20

47.214.0.0/16

216.134.72.0/21

209.209.188.0/24

74.194.192.0/18

66.76.217.0/24

75.111.196.0/22

173.80.0.0/15

47.215.96.0/20

64.72.34.0/24

64.72.39.0/24

209.207.0.0/18

173.217.128.0/20

64.234.8.0/24

24.224.60.0/22

209.33.54.0/24

173.218.88.0/22

173.218.224.0/20

74.192.32.0/20

47.217.128.0/18

64.72.63.0/24

50.25.0.0/18

173.80.128.0/17

64.72.40.0/24

66.76.163.0/24

173.218.96.0/22

24.121.0.0/17

66.76.0.0/17

74.196.128.0/19

173.219.90.0/24

50.26.0.0/19

74.197.235.0/24

50.27.0.0/17

64.234.68.0/24

75.109.158.0/23

66.76.220.0/24

173.219.74.0/24

208.180.192.0/19

47.215.32.0/23

173.218.28.0/22

75.108.232.0/21

205.201.64.0/18

173.219.80.0/20

74.195.192.0/18

64.72.56.0/24

209.33.11.0/24

74.196.96.0/19

173.218.76.0/22

50.26.32.0/19

75.108.176.0/20

24.156.34.0/24

74.192.0.0/16

74.194.0.0/17

75.110.164.0/24

173.81.128.0/17

207.254.249.0/24

24.75.126.0/24

75.109.0.0/16

173.216.247.0/24

67.21.185.0/24

173.219.49.0/24

205.201.83.0/24

75.109.44.0/23

173.216.242.0/24

50.27.160.0/19

47.216.128.0/17

173.218.84.0/22

64.72.49.0/24

50.27.192.0/18

24.32.32.0/21

64.234.34.0/24

64.72.41.0/24

75.108.208.0/21

75.108.0.0/14

75.109.112.0/22

47.212.0.0/14

74.192.0.0/20

74.197.192.0/19

75.111.135.0/24

205.201.65.0/24

24.72.186.0/23

173.81.0.0/16

209.33.0.0/17

47.212.96.0/19

75.108.32.0/23

66.76.114.0/24

47.210.128.0/17

209.207.62.0/23

50.25.96.0/19

24.224.58.0/23

74.195.0.0/20

173.219.128.0/18

24.121.0.0/16

208.180.36.0/22

47.213.182.0/23

47.220.0.0/14

64.72.38.0/24

173.80.0.0/16

47.214.44.0/22

75.108.105.0/24

74.194.0.0/15

50.24.0.0/14

74.197.160.0/19

50.24.24.0/24

173.81.223.0/24

173.219.112.0/21

173.219.50.0/24

209.33.10.0/24

66.76.80.0/24

207.192.192.0/18

216.134.80.0/20

205.201.72.0/24

173.216.128.0/22

75.108.216.0/21

24.31.17.0/24

75.110.166.0/23

24.49.200.0/24

47.221.0.0/17

207.192.240.0/20

24.75.113.0/24

207.254.224.0/20

24.206.128.0/17

75.108.48.0/21

24.32.0.0/20

64.234.74.0/24

173.218.24.0/22

205.201.114.0/23

24.49.194.0/24

47.211.208.0/20

66.76.216.0/24

IPv6 Prefixes (26)

2600:5400:8800::/48

2600:5400:2000::/36

2600:5400:8000::/48

2600:5400:9000::/48

2600:541e::/44

2600:5400:cd01::/48

2600:5400:eb01::/48

2600:5400:3000::/36

2600:5400:ce00::/48

2600:5400:8001::/48

2600:5400:d101::/48

2600:5400:9001::/48

2600:5400:cd02::/48

2600:5400:9002::/48

2600:5408::/32

2600:5400:1000::/36

2600:5400:7000::/36

2600:5400:e100::/48

2600:5408::/44

2600:5400:cd00::/48

2600:5400:8000::/33

2600:5400:9003::/48

2620:121:d000::/44

2600:5400:eb00::/48

2600:5401::/44

2600:5400:cd03::/48

BGP Peers (5)

AS14907Wikimedia Foundation Inc.

AS18106Viewqwest Pte Ltd

AS19151BroadbandONE, LLC

AS199524Gcore S.A.

AS49544i3D.net B.V

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.