Skip to content

Autonomous System

AS6461 · Zayo Bandwidth

Overview

AS6461 is announced on the Internet: RIPE RIS route collectors currently see 226 IPv4 prefixes and 13 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 1,751,808 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 131 upstream neighbours (transit providers or peers) and 2,787 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Zayo Infrastructure France SA (AS8218), and Level 3 Parent, LLC (AS3356). AS6461 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:47 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 208.184.0.1

The trace goes to 208.184.0.1, the first address of 208.184.0.0/15. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.

Announced prefixes

IPv4 prefixes (226 prefixes)

PrefixAddresses
23.139.176.0/24256
31.99.0.0/1816,384
45.33.128.0/204,096
50.115.24.0/24256
63.208.55.0/24256
63.249.63.0/24256
64.56.211.0/24256
64.124.0.0/1732,768
64.124.128.0/198,192
64.124.160.0/204,096
64.124.176.0/212,048
64.124.184.0/221,024
64.124.188.0/23512
64.124.190.0/23512
64.124.192.0/1816,384
64.125.0.0/1665,536
64.125.74.0/24256
66.46.0.0/1665,536
66.62.132.0/24256
66.62.161.0/24256
66.62.182.0/23512
66.62.230.0/24256
66.62.238.0/24256
66.62.239.0/24256
66.62.240.0/221,024
66.62.244.0/23512
66.213.128.0/198,192
67.136.93.0/24256
67.208.224.0/198,192
67.213.160.0/204,096
67.230.192.0/198,192
68.170.192.0/204,096
69.147.0.0/204,096
69.147.2.0/24256
69.147.4.0/24256
69.147.44.0/221,024
69.147.52.0/221,024
69.147.55.0/24256
69.166.105.0/24256
69.195.0.0/204,096
70.98.210.0/24256
71.19.160.0/198,192
72.5.65.0/24256
72.10.64.0/198,192
72.20.192.0/1816,384
74.80.190.0/24256
74.114.161.0/24256
74.114.162.0/24256
74.114.163.0/24256
74.114.164.0/221,024
74.212.179.0/24256
74.213.234.0/24256
74.213.235.0/24256
74.216.0.0/1665,536
76.78.123.0/24256
79.141.32.0/204,096
79.183.247.0/24256
82.98.192.0/212,048
82.98.232.0/212,048
82.98.240.0/204,096
91.208.131.0/24256
94.31.0.0/1816,384
95.134.53.0/24256
95.134.104.0/24256
95.134.105.0/24256
95.134.106.0/24256
95.134.107.0/24256
95.134.108.0/24256
95.134.109.0/24256
95.134.110.0/24256
95.134.111.0/24256
95.164.96.0/204,096
97.107.64.0/24256
97.107.65.0/24256
103.139.130.0/23512
104.36.8.0/212,048
104.140.204.0/24256
104.145.0.0/204,096
104.224.2.0/24256
104.251.96.0/204,096
107.178.32.0/204,096
128.177.0.0/1665,536
129.192.170.0/24256
129.192.171.0/24256
129.192.189.0/24256
141.193.226.0/24256
142.194.0.0/1665,536
144.83.0.0/1665,536
149.64.226.0/24256
150.169.12.0/24256
159.18.0.0/1665,536
159.246.52.0/24256
162.223.4.0/221,024
162.223.112.0/221,024
162.245.96.0/221,024
162.249.88.0/212,048
162.251.150.0/24256
162.253.136.0/212,048
164.90.20.0/24256
167.217.0.0/1665,536

Showing the first 100 of 226, in address order. Complete list on RIPEstat

IPv6 prefixes (13 prefixes)

Prefix
2001:438::/32
2001:4c8::/32
2001:4c8:1092::/48
2001:4c8:110a::/48
2001:df0:7c80::/48
2001:1b70:b3::/48
2602:807:400c::/48
2602:fdbe::/36
2604:b040:b::/48
2604:e500::/32
2607:c200:1106::/48
2800:870:1002::/48
2a00:16f8::/32

Neighbours

Upstreams (transit or peers) (131)

ASNetworkVisibility
AS1299Arelion Sweden AB100,608
AS8218Zayo Infrastructure France SA90,663
AS3356Level 3 Parent, LLC82,310
AS6939Hurricane Electric LLC70,506
AS2914NTT America, Inc.70,313
AS174Cogent Communications, LLC69,925
AS400587Ryamer, LLC50,684
AS34549meerfarbig GmbH & Co. KG50,169
AS41327Fiber Telecom S.p.A.42,632
AS6762TELECOM ITALIA SPARKLE S.p.A.42,376
AS9002RETN Limited40,939
AS6453TATA COMMUNICATIONS (AMERICA) INC38,856
AS25091IP-Max SA38,315
AS50629-34,054
AS52320-32,066
AS3491PCCW Global (HK) Ltd.31,114
AS51088A2B IP B.V.28,794
AS13030Init7 (Switzerland) Ltd.27,012
AS15958CETIN Ltd. Belgrade23,755
AS3257GTT Communications Inc.22,136
AS6057Administracion Nacional de Telecomunicaciones21,192
AS33891Core-Backbone GmbH20,613
AS852TELUS Communications Inc.20,021
AS47147Anexia Cloud Solutions GmbH19,947
AS34177Celeste SAS19,520
AS3320Deutsche Telekom AG19,261
AS3935131173 Services AB17,778
AS34019Hivane Association17,600
AS8758Iway AG17,252
AS6830LibertyGlobal Liberty Global Europe Holding B.V.16,169

The 30 most visible of 131.

Downstreams (customers) (2,787)

ASNetworkVisibility
AS46887Crown Castle Fiber LLC212,605
AS52320GlobeNet Cabos Submarinos Colombia, S.A.S.113,841
AS9498BHARTI Airtel Ltd.79,406
AS7473Singapore Telecommunications Ltd72,902
AS3356Level 3 Parent, LLC63,186
AS174Cogent Communications, LLC42,278
AS6128Cablevision Systems Corp.34,316
AS1299Arelion Sweden AB28,060
AS2914NTT America, Inc.21,091
AS6453TATA COMMUNICATIONS (AMERICA) INC16,833
AS3257GTT Communications Inc.16,795
AS29049-16,124
AS812Rogers Communications Canada Inc.14,222
AS7385-11,476
AS20055Wholesail networks LLC11,179
AS12956TELEFONICA GLOBAL SOLUTIONS SL10,795
AS7018AT&T Enterprises, LLC10,413
AS12741-9,968
AS33576-9,916
AS17378TierPoint, LLC9,534
AS8218Zayo Infrastructure France SA9,525
AS12025-9,128
AS18734Operbes, S.A. de C.V.8,976
AS6762TELECOM ITALIA SPARKLE S.p.A.8,446
AS137409GSL Networks Pty LTD8,069
AS15694Atman Sp. z o.o.7,899
AS20804Exatel S.A.7,703
AS3491PCCW Global (HK) Ltd.7,501
AS6424EDGOO NETWORKS UNIPESSOAL LDA7,473
AS29535Orange Polska Spolka Akcyjna7,173

The 30 most visible of 2,787.

2,710 more neighbours appear on both sides of this network depending on the path, so they are counted in neither list.

Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.

How to read this page

An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.

A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.

Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.

The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.