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Autonomous System

AS11403 ยท NYI

Overview

AS11403 is announced on the Internet: RIPE RIS route collectors currently see 28 IPv4 prefixes and 4 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 46,848 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 18 upstream neighbours (transit providers or peers) and 7 downstream neighbours (customers or networks it carries). Its most visible upstreams are Zayo Bandwidth (AS6461), Level 3 Parent, LLC (AS3356), and GTT Communications Inc. (AS3257). AS11403 was assigned by ARIN, and its registration country is United States.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:54 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 64.90.160.1, the first address of 64.90.160.0/19. 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 (28 prefixes)

PrefixAddresses
64.5.122.0/24256
64.90.160.0/198,192
64.90.168.0/23512
64.147.96.0/198,192
64.147.115.0/24256
64.147.116.0/24256
64.147.127.0/24256
66.111.0.0/204,096
67.221.176.0/204,096
70.39.228.0/24256
72.37.201.0/24256
74.116.52.0/24256
96.47.64.0/204,096
144.168.48.0/221,024
162.208.116.0/221,024
162.208.119.0/24256
173.228.128.0/198,192
173.228.144.0/23512
173.228.146.0/23512
173.228.159.0/24256
192.76.117.0/24256
192.152.22.0/23512
198.3.136.0/212,048
199.4.163.0/24256
199.26.225.0/24256
199.83.60.0/221,024
204.153.120.0/23512
207.12.88.0/212,048

IPv6 prefixes (4 prefixes)

Prefix
2610:1c0::/32
2610:1c0:1000::/36
2610:1c0:2000::/36
2610:1c1::/32

Neighbours

Upstreams (transit or peers) (18)

ASNetworkVisibility
AS6461Zayo Bandwidth1,133
AS3356Level 3 Parent, LLC545
AS3257GTT Communications Inc.354
AS18450WebNX, Inc.290
AS6939Hurricane Electric LLC129
AS9002RETN Limited122
AS25091IP-Max SA44
AS202Level 3 Parent, LLC26
AS2516KDDI CORPORATION12
AS8359MTS PJSC10
AS137409GSL Networks Pty LTD9
AS286GTT Communications Inc.8
AS14840BR.Digital Telecom8
AS4230CLARO S.A.7
AS22356Durand do Brasil Ltda4
AS29632Netassist International EOOD2
AS37468Angola Cables2
AS39249Netassist International EOOD1

Downstreams (customers) (7)

ASNetworkVisibility
AS62217VooServers Vinters IT Ltd377
AS64257trueEX LLC324
AS53951GLMX, LLC316
AS53060Porta 80 - Servicos em Internet Ltda274
AS62576S-Mobile LLC266
AS62904Eonix Corporation125
AS53899ServiceHub Corporation86

21 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.