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Autonomous System

AS8220 · COLT Technology Services Group Limited

Overview

AS8220 is announced on the Internet: RIPE RIS route collectors currently see 153 IPv4 prefixes and 19 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 1,496,576 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 117 upstream neighbours (transit providers or peers) and 1,829 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Level 3 Parent, LLC (AS3356), and Iway AG (AS8758). AS8220 was assigned by RIPE NCC, and its registration country is United Kingdom.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 6:46 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 217.110.0.1

The trace goes to 217.110.0.1, the first address of 217.110.0.0/15. 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 (153 prefixes)

PrefixAddresses
27.110.0.0/204,096
27.110.16.0/221,024
27.110.20.0/23512
38.210.238.0/24256
45.135.160.0/24256
46.28.184.0/24256
46.248.14.0/24256
46.248.128.0/198,192
57.133.0.0/1665,536
58.0.0.0/1665,536
58.1.128.0/1732,768
62.23.0.0/1665,536
62.23.14.0/24256
62.23.23.0/24256
62.23.43.0/24256
62.23.61.0/24256
62.23.70.0/24256
62.23.254.0/24256
62.23.255.0/24256
62.72.96.0/198,192
62.84.192.0/198,192
62.96.0.0/1665,536
62.97.64.0/1816,384
62.152.96.0/198,192
62.192.0.0/198,192
65.87.8.0/24256
78.143.0.0/1816,384
78.156.64.0/204,096
78.156.80.0/212,048
80.80.0.0/198,192
80.169.0.0/1665,536
80.251.160.0/198,192
82.112.192.0/198,192
84.14.0.0/1665,536
84.14.63.0/24256
84.14.217.0/24256
84.16.160.0/198,192
85.88.128.0/198,192
87.241.0.0/1816,384
90.152.0.0/1816,384
90.152.64.0/1816,384
90.152.64.0/198,192
90.152.96.0/198,192
91.212.43.0/24256
95.175.192.0/204,096
95.175.208.0/204,096
103.138.100.0/221,024
103.248.76.0/24256
110.50.78.0/23512
116.83.0.0/1732,768
118.67.224.0/198,192
134.128.168.0/221,024
136.225.0.0/1665,536
145.224.32.0/23512
148.109.0.0/1665,536
148.109.25.0/24256
153.96.140.0/24256
153.96.141.0/24256
154.16.166.0/24256
155.45.128.0/24256
157.2.32.0/198,192
157.2.48.0/212,048
157.2.52.0/24256
157.120.224.0/212,048
157.120.236.0/221,024
157.120.240.0/204,096
158.162.32.0/198,192
158.162.192.0/1816,384
173.247.225.0/24256
178.159.176.0/204,096
181.41.193.0/24256
182.54.238.0/24256
185.138.136.0/221,024
185.157.227.0/24256
185.194.232.0/23512
192.51.54.0/24256
192.103.52.0/24256
192.187.137.0/24256
193.16.48.0/212,048
193.16.56.0/221,024
193.16.60.0/23512
193.16.62.0/24256
193.16.155.0/24256
193.17.178.0/24256
193.30.84.0/24256
193.33.182.0/23512
193.82.0.0/198,192
193.82.32.0/198,192
193.96.108.0/23512
193.98.156.0/24256
193.102.132.0/24256
193.111.24.0/23512
193.118.224.0/198,192
193.134.159.0/24256
193.141.139.0/24256
193.183.185.0/24256
193.228.0.0/24256
193.235.44.0/24256
193.235.45.0/24256
194.0.195.0/24256

Showing the first 100 of 153, in address order. Complete list on RIPEstat

IPv6 prefixes (19 prefixes)

Prefix
2001:678:868::/48
2001:678:1020::/48
2001:67c:424::/48
2001:67c:2b34::/48
2001:920::/32
2001:921::/32
2001:924::/32
2001:925::/32
2001:926::/32
2001:926:40::/48
2400:81e0::/32
2a06:6540:1241::/48
2a06:6540:1440::/48
2a06:6540:4101::/48
2a06:6540:4181::/48
2a06:6541:1241::/48
2a06:6541:1440::/48
2a06:6541:4101::/48
2a06:6541:4181::/48

Neighbours

Upstreams (transit or peers) (117)

ASNetworkVisibility
AS1299Arelion Sweden AB34,921
AS3356Level 3 Parent, LLC32,705
AS8758Iway AG30,877
AS6939Hurricane Electric LLC17,756
AS15576NTS workspace AG12,326
AS6453TATA COMMUNICATIONS (AMERICA) INC9,099
AS3491PCCW Global (HK) Ltd.8,647
AS13030Init7 (Switzerland) Ltd.4,659
AS33891Core-Backbone GmbH3,094
AS50629LWLcom GmbH3,059
AS13786Seabras 1 USA, LLC2,999
AS35625Eurofiber France SAS2,980
AS51088A2B IP B.V.2,935
AS5405Inter.link GmbH2,911
AS6696VERIXI SA2,656
AS34177Celeste SAS2,362
AS3935131173 Services AB2,332
AS29075IELO-LIAZO SERVICES SAS2,294
AS52320GlobeNet Cabos Submarinos Colombia, S.A.S.2,288
AS6461Zayo Bandwidth2,245
AS47147Anexia Cloud Solutions GmbH2,239
AS12389PJSC Rostelecom2,230
AS47692Nessus GmbH2,121
AS24961WIIT AG2,115
AS41327Fiber Telecom S.p.A.2,066
AS61049Exascale Ltd2,028
AS12779IT.Gate S.p.A.1,997
AS35280F5 Networks SARL1,938
AS24482SG.GS1,774
AS15802Emirates Integrated Telecommunications Company PJSC1,722

The 30 most visible of 117.

Downstreams (customers) (1,829)

ASNetworkVisibility
AS3356Level 3 Parent, LLC6,987
AS64289Macarne.com5,283
AS1299Arelion Sweden AB4,256
AS10021KVH Co.,Ltd3,214
AS9607BBTower - BroadBand Tower, Inc.2,893
AS49666Telecommunication Infrastructure Company2,746
AS15576NTS workspace AG2,380
AS34471Free Technologies Excom S.L.2,183
AS396356Latitude.sh1,737
AS39923Unix-Solutions BV1,399
AS3360DXC US Latin America Corporation1,361
AS15699-1,263
AS15830Equinix Equinix (EMEA) Acquisition Enterprises B.V.1,239
AS18403FPT Telecom Company1,225
AS38193Transworld Associates (Pvt.) Ltd.1,206
AS8758Iway AG1,161
AS6453TATA COMMUNICATIONS (AMERICA) INC1,154
AS20473The Constant Company, LLC1,115
AS14114-1,112
AS198479-1,047
AS5511Opentransit Orange S.A.990
AS3216PJSC "Vimpelcom"981
AS196714Thueringer Netkom GmbH962
AS3573Accenture LLP887
AS2152-802
AS51551-802
AS47720-783
AS4826Vocus Connect International Backbone780
AS6908-756
AS31133PJSC MegaFon742

The 30 most visible of 1,829.

1,107 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.