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

AS33652

ASN

ARIN

RIR

IPv4 Prefixes

153

IPv6 Prefixes

AS Information

ASNAS33652

NameCMCS

OrganisationComcast Cable Communications, LLC

Country –

RIRARIN

Allocated16.02.2005

Network Overview

IPv4 Prefixes32

IPv6 Prefixes153

Upstreams (Transit)2

Downstreams (Customers)75

BGP Peers0

AS Path (BGP neighbours)

Upstreams (Transit)

AS3356Lumen (Level 3)AS7922Comcast Cable Communications, LLC

AS33652CMCS

Downstreams (Customers)

AS10753Level 3 Parent, LLC AS10844Vastnet Corp AS11004City of Golden AS11091AS11200Regis University AS11965City of Aspen+69

Upstreams (Transit) (2)

AS3356Lumen (Level 3)

AS7922Comcast Cable Communications, LLC

Downstreams (Customers) (75)

AS10753Level 3 Parent, LLC

AS10844Vastnet Corp

AS11004City of Golden

AS11091

AS11200Regis University

AS11965City of Aspen

AS12156City of Aurora Colorado

AS13524Arrow Electronics

AS13618Holy Cross Energy

AS14567Springs Hosting

AS15071BAX GLOBAL

AS17307NTT Global Networks Incorporated

IPv4 Prefixes (32)

50.225.186.0/24

139.181.28.0/24

50.221.49.0/24

50.206.155.0/24

50.169.236.0/24

50.233.144.0/24

50.222.100.0/24

192.234.211.0/24

50.169.239.0/24

24.104.146.0/24

50.221.47.0/24

50.227.142.0/24

64.50.168.0/21

107.1.252.0/24

50.238.58.0/24

50.238.57.0/24

50.222.96.0/24

50.201.230.0/24

204.228.81.0/24

50.237.69.0/24

64.130.16.0/20

107.1.38.0/24

50.236.26.0/24

50.147.168.0/24

50.232.50.0/24

50.205.29.0/24

50.220.96.0/24

50.227.104.0/24

50.204.71.0/24

50.228.62.0/24

107.1.222.0/23

50.203.219.0/24

IPv6 Prefixes (153)

2001:559:83a3::/48

2001:559:27d::/48

2001:559:8540::/48

2001:559:827b::/48

2001:559:c159::/48

2001:559:2b3::/48

2001:559:253::/48

2001:559:83be::/48

2001:559:3e0::/48

2001:559:19c::/48

2001:559:c145::/48

2001:559:8216::/48

2001:559:323::/48

2001:559:8316::/48

2001:559:c29b::/48

2602:810:20c0::/48

2001:559:733::/48

2001:559:c55d::/48

2001:559:c30d::/48

2001:559:163::/48

2001:559:81a1::/48

2001:559:c212::/48

2001:559:81fa::/48

2001:559:507::/48

2001:559:27c::/48

2001:559:86e9::/48

2001:559:c2ca::/48

2001:559:c1e6::/48

2001:559:83::/48

2001:559:2b7::/48

2001:559:c287::/48

2001:559:3d3::/48

2001:559:8276::/48

2001:559:c065::/48

2001:559:24a::/48

2001:559:c2d2::/48

2001:559:83e8::/48

2001:559:c0a1::/48

2001:559:83b8::/48

2001:559:c1df::/48

2001:559:1f5::/48

2001:559:c13a::/48

2001:559:8428::/48

2001:559:349::/48

2001:559:c088::/48

2001:559:c324::/48

2001:559:c1be::/48

2001:559:1f3::/48

2001:559:51f::/48

2001:559:c0c1::/48

2001:559:183::/48

2001:559:c0ee::/48

2001:559:2c4::/48

2001:559:81ec::/48

2001:559:837b::/48

2001:559:c2ec::/48

2001:559:c24c::/48

2001:559:839e::/48

2001:559:81c8::/48

2001:559:c047::/48

2001:559:c070::/48

2001:559:1b4::/48

2001:559:81a5::/48

2001:559:83a4::/48

2001:559:415::/48

2001:559:3df::/48

2001:559:8701::/48

2001:559:823d::/48

2001:559:86e3::/48

2001:559:8319::/48

2001:559:80f8::/48

2001:559:2c0::/48

2001:559:778::/48

2001:559:81f2::/48

2001:559:c2cf::/48

2001:559:87d6::/48

2001:559:251::/48

2001:559:c23b::/48

2001:559:c20b::/48

2001:559:83dc::/48

2001:559:878e::/48

2001:559:c337::/48

2001:559:878d::/48

2001:559:86e8::/48

2001:559:c53e::/48

2001:559:c2da::/48

2001:559:3d4::/48

2001:559:250::/48

2001:559:c317::/48

2001:559:839d::/48

2001:559:83e3::/48

2001:559:321::/48

2001:559:35f::/48

2001:559:1fb::/48

2001:559:28e::/48

2001:559:8729::/48

2001:559:83a5::/48

2001:559:c4d2::/48

2001:559:80de::/48

2001:559:131::/48

2001:559:81c7::/48

2001:559:83a0::/48

2001:559:2b8::/48

2001:559:2df::/48

2001:559:822d::/48

2001:559:c17e::/48

2001:559:83a1::/48

2001:559:29f::/48

2001:559:8185::/48

2001:559:2e8::/48

2001:559:c27a::/48

2001:559:812c::/48

2001:559:167::/48

2001:559:86cc::/48

2001:559:854d::/48

2001:559:561::/48

2001:559:17b::/48

2001:559:39f::/48

2001:559:4ba::/48

2001:559:85f2::/48

2001:559:8718::/48

2001:559:584::/48

2001:559:83a2::/48

2001:559:3d6::/48

2001:559:45c::/48

2001:559:19e::/48

2001:559:8203::/48

2001:559:8792::/48

2001:559:1f6::/48

2001:559:3ec::/48

2001:559:c139::/48

2001:559:c1b1::/48

2001:559:c439::/48

2001:559:819c::/48

2602:811:10e4::/48

2001:559:252::/48

2001:559:80dc::/48

2001:559:5f7::/48

2001:559:335::/48

2001:559:8791::/48

2001:559:207::/48

2001:559:872a::/48

2001:559:c152::/48

2001:559:814e::/48

2001:559:86d9::/48

2001:559:3dd::/48

2001:559:83d1::/48

2001:559:c2a4::/48

2001:559:81b2::/48

2001:559:83a8::/48

2001:559:8564::/48

2001:559:c2de::/48

2001:559:811f::/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.