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Autonomous System

AS2611 · BELNET

Overview

AS2611 is announced on the Internet: RIPE RIS route collectors currently see 39 IPv4 prefixes and 7 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 866,560 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 62 upstream neighbours (transit providers or peers) and 19 downstream neighbours (customers or networks it carries). Its most visible upstreams are GEANT Vereniging (AS21320), Cogent Communications, LLC (AS174), and Level 3 Parent, LLC (AS3356). AS2611 was assigned by RIPE NCC, and its registration country is Belgium.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:02 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 193.190.0.1, the first address of 193.190.0.0/15. 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 (39 prefixes)

PrefixAddresses
5.149.143.0/24256
77.246.241.0/24256
93.190.122.0/24256
109.69.223.0/24256
130.104.0.0/1665,536
134.58.0.0/1665,536
134.184.0.0/1665,536
138.48.0.0/1665,536
139.165.0.0/1665,536
139.191.112.0/204,096
143.129.0.0/1665,536
143.169.0.0/1665,536
144.248.0.0/1665,536
146.175.0.0/1665,536
157.193.0.0/1665,536
164.15.0.0/1665,536
185.122.248.0/221,024
185.182.132.0/221,024
185.226.167.0/24256
192.31.23.0/24256
192.135.167.0/24256
192.135.168.0/24256
192.156.132.0/24256
193.9.8.0/221,024
193.53.3.0/24256
193.53.34.0/24256
193.53.113.0/24256
193.53.114.0/23512
193.53.116.0/221,024
193.53.120.0/221,024
193.53.124.0/24256
193.58.148.0/23512
193.58.156.0/24256
193.58.158.0/24256
193.58.159.0/24256
193.58.172.0/24256
193.190.0.0/15131,072
193.191.192.0/198,192
193.191.240.0/204,096

IPv6 prefixes (7 prefixes)

Prefix
2001:6a8::/32
2001:6a8:8a00::/48
2001:6a8:a001::/48
2001:6a8:be00::/48
2a02:2c40::/32
2a04:b5c0::/29
2a14:b980::/32

Neighbours

Upstreams (transit or peers) (62)

ASNetworkVisibility
AS21320GEANT Vereniging677
AS174Cogent Communications, LLC604
AS3356Level 3 Parent, LLC544
AS6762TELECOM ITALIA SPARKLE S.p.A.373
AS6939Hurricane Electric LLC307
AS2914NTT America, Inc.218
AS9002RETN Limited203
AS6461Zayo Bandwidth94
AS20965GEANT Vereniging85
AS13030Init7 (Switzerland) Ltd.77
AS33891Core-Backbone GmbH58
AS25091IP-Max SA43
AS8298IPng Networks GmbH35
AS34019Hivane Association33
AS1273IDDQD-AS28
AS8218Zayo Infrastructure France SA24
AS3303Swisscom (Schweiz) AG16
AS3935131173 Services AB15
AS4455IX Reach Ltd12
AS1267WIND TRE S.P.A.11
AS31500Global Network Management Inc10
AS39686Eurofiber Nederland BV10
AS20766Association "Gitoyen"9
AS6663Euroweb Romania S.R.L.8
AS8220COLT Technology Services Group Limited5
AS6696VERIXI SA4
AS35280F5 Networks SARL4
AS6777Amsterdam Internet Exchange B.V.3
AS29632Netassist International EOOD3
AS5405Inter.link GmbH2

The 30 most visible of 62.

Downstreams (customers) (19)

ASNetworkVisibility
AS16326SmalS vzw407
AS15383Paradigm302
AS62058ETSPUBLI RADIO-TELEVISION BELGE DE LA COMMUNAUTE FRANCAISE285
AS210358imec IMEC (Interuniversitair Micro-Electronica Centrum) VZW277
AS198559BELNET276
AS213331BeMinDef Belgian Ministry of Defence266
AS25344Technofutur TIC ASBL265
AS210227jessazh Jessa Ziekenhuis vzw260
AS49046De Vlaamse Radio- en Televisieomroeporganisatie NV237
AS213345service administratif a comptabilite autonome charge de la gestion des cartes d identite et du registre national175
AS199670-103
AS207562-95
AS174Cogent Communications, LLC44
AS8674Netnod AB34
AS1273IDDQD-AS22
AS3356Level 3 Parent, LLC17
AS6939Hurricane Electric LLC5
AS6762TELECOM ITALIA SPARKLE S.p.A.1
AS209226-1

68 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.