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Autonomous System

AS201838 · Community Fibre Limited

Overview

AS201838 is announced on the Internet: RIPE RIS route collectors currently see 101 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 221,952 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 46 upstream neighbours (transit providers or peers) and 1 downstream neighbour (customers or networks it carries). Its most visible upstreams are NTT America, Inc. (AS2914), Hurricane Electric LLC (AS6939), and Level 3 Parent, LLC (AS3356). AS201838 was assigned by RIPE NCC, and its registration country is United Kingdom.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 6:18 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 147.12.128.1, the first address of 147.12.128.0/17. 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 (101 prefixes)

PrefixAddresses
45.12.172.0/221,024
45.81.72.0/221,024
45.86.8.0/221,024
45.89.84.0/221,024
45.89.156.0/221,024
45.90.172.0/221,024
45.90.200.0/221,024
45.91.112.0/221,024
45.92.232.0/221,024
45.93.172.0/221,024
45.94.60.0/221,024
45.94.176.0/221,024
45.95.236.0/221,024
45.95.248.0/221,024
45.117.136.0/221,024
45.128.32.0/221,024
45.128.136.0/221,024
45.132.136.0/212,048
45.133.88.0/221,024
45.136.232.0/221,024
45.141.236.0/221,024
45.144.56.0/221,024
45.144.160.0/221,024
45.145.148.0/221,024
45.146.8.0/221,024
45.146.60.0/221,024
45.147.32.0/221,024
45.148.12.0/221,024
45.148.56.0/221,024
45.148.252.0/221,024
45.149.72.0/221,024
45.149.220.0/221,024
45.150.144.0/221,024
45.152.4.0/221,024
45.153.220.0/221,024
45.159.88.0/221,024
45.159.152.0/221,024
45.248.144.0/221,024
46.102.170.0/23512
62.133.48.0/221,024
62.197.132.0/221,024
77.75.60.0/221,024
79.171.153.0/24256
79.171.154.0/23512
79.171.156.0/221,024
80.76.56.0/221,024
89.36.112.0/204,096
89.43.208.0/212,048
89.45.176.0/204,096
89.222.16.0/204,096
91.209.86.0/24256
93.113.26.0/23512
94.176.208.0/23512
94.177.138.0/23512
94.247.86.0/23512
95.214.184.0/221,024
95.214.228.0/221,024
103.7.204.0/221,024
103.205.24.0/221,024
130.255.16.0/221,024
130.255.28.0/221,024
147.12.128.0/1732,768
149.22.128.0/1732,768
149.34.128.0/1816,384
154.49.103.0/24256
161.51.48.0/204,096
161.51.96.0/23512
161.51.192.0/198,192
161.51.224.0/204,096
161.51.252.0/23512
168.199.64.0/198,192
171.22.104.0/221,024
178.239.192.0/221,024
178.239.200.0/221,024
178.255.88.0/212,048
185.59.124.0/221,024
185.71.36.0/221,024
185.103.72.0/221,024
185.111.172.0/221,024
185.115.144.0/221,024
185.121.228.0/221,024
185.229.104.0/221,024
185.230.248.0/221,024
185.236.60.0/221,024
185.237.60.0/221,024
185.238.220.0/221,024
185.240.24.0/221,024
185.240.196.0/221,024
185.241.164.0/221,024
185.245.236.0/221,024
188.212.122.0/23512
188.215.16.0/23512
188.215.74.0/23512
188.241.106.0/23512
192.166.208.0/221,024
192.166.212.0/221,024
193.42.52.0/221,024
193.164.20.0/221,024
194.4.156.0/221,024
212.132.192.0/1816,384

Showing the first 100 of 101, in address order. Complete list on RIPEstat

IPv6 prefixes (2 prefixes)

Prefix
2a02:6b60::/28
2a03:3820::/32

Neighbours

Upstreams (transit or peers) (46)

ASNetworkVisibility
AS2914NTT America, Inc.257
AS6939Hurricane Electric LLC153
AS3356Level 3 Parent, LLC120
AS9002RETN Limited25
AS25091IP-Max SA21
AS33891Core-Backbone GmbH14
AS34549meerfarbig GmbH & Co. KG11
AS5405Inter.link GmbH10
AS35280F5 Networks SARL10
AS8220COLT Technology Services Group Limited7
AS3216PJSC "Vimpelcom"6
AS29075IELO-LIAZO SERVICES SAS6
AS34927iFog GmbH6
AS50304Blix Solutions AS6
AS3214xTom GmbH4
AS4455IX Reach Ltd4
AS7195EDGEUNO S.A.S4
AS12779-4
AS14840BR.Digital Telecom4
AS20562Broadband Hosting B.V.4
AS34177Celeste SAS4
AS37497Network Platforms (PTY) LTD4
AS3935131173 Services AB4
AS41327-4
AS48362Stadtwerke Feldkirch4
AS60068Datacamp Limited4
AS1267WIND TRE S.P.A.3
AS8218Zayo Infrastructure France SA3
AS35575-3
AS37100SEACOM Limited3

The 30 most visible of 46.

Downstreams (customers) (1)

ASNetworkVisibility
AS210874Box Broadband Limited364

36 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.