Skip to content

Autonomous System

AS20860 · IOMART CLOUD SERVICES LIMITED

Overview

AS20860 is announced on the Internet: RIPE RIS route collectors currently see 192 IPv4 prefixes and 16 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 388,864 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 44 upstream neighbours (transit providers or peers) and 21 downstream neighbours (customers or networks it carries). Its most visible upstreams are Zayo Bandwidth (AS6461), Cogent Communications, LLC (AS174), and Hurricane Electric LLC (AS6939). AS20860 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 1:54 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 78.129.128.1

The trace goes to 78.129.128.1, the first address of 78.129.128.0/17. 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 (192 prefixes)

PrefixAddresses
5.77.32.0/198,192
5.133.176.0/212,048
5.152.192.0/198,192
5.159.224.0/212,048
5.183.102.0/24256
5.187.16.0/204,096
5.187.22.0/24256
5.187.23.0/24256
31.3.224.0/198,192
31.24.32.0/212,048
31.24.32.0/24256
31.24.34.0/24256
31.24.36.0/24256
31.24.39.0/24256
31.58.214.0/24256
31.187.70.0/23512
31.216.48.0/221,024
31.216.52.0/221,024
31.216.52.0/24256
37.128.184.0/212,048
37.157.240.0/212,048
37.157.242.0/23512
37.220.0.0/198,192
46.20.224.0/204,096
62.128.192.0/204,096
62.128.208.0/204,096
62.233.64.0/1816,384
77.240.0.0/204,096
77.245.64.0/204,096
77.246.160.0/204,096
77.246.162.0/24256
77.246.163.0/24256
77.246.169.0/24256
77.246.171.0/24256
77.246.172.0/24256
77.246.174.0/24256
78.129.128.0/1732,768
79.143.80.0/221,024
79.171.32.0/212,048
80.75.64.0/204,096
80.84.48.0/204,096
80.84.49.0/24256
80.243.176.0/204,096
81.94.192.0/204,096
81.94.192.0/24256
81.168.83.0/24256
81.168.119.0/24256
82.102.8.0/212,048
82.102.8.0/24256
82.145.32.0/198,192
83.98.196.0/24256
83.142.224.0/212,048
84.22.160.0/198,192
85.232.32.0/198,192
85.232.32.0/212,048
85.232.40.0/221,024
85.232.44.0/221,024
87.117.192.0/1816,384
87.237.56.0/212,048
88.150.128.0/1732,768
88.150.137.0/24256
88.150.140.0/221,024
88.150.144.0/221,024
88.150.154.0/24256
88.150.156.0/221,024
88.150.160.0/221,024
88.150.164.0/221,024
88.150.168.0/221,024
88.150.192.0/198,192
88.150.206.0/24256
88.150.220.0/24256
88.150.230.0/24256
88.150.240.0/23512
88.150.252.0/23512
89.43.47.0/24256
89.207.168.0/212,048
89.207.171.0/24256
89.207.172.0/24256
91.199.151.0/24256
91.207.220.0/23512
91.215.180.0/221,024
91.234.184.0/23512
91.235.170.0/24256
91.245.218.0/24256
91.246.8.0/23512
91.246.11.0/24256
91.246.49.0/24256
91.247.177.0/24256
92.63.128.0/204,096
93.174.10.0/24256
93.174.11.0/24256
93.174.12.0/24256
95.129.104.0/212,048
95.154.192.0/1816,384
107.181.136.0/24256
109.73.64.0/204,096
109.75.160.0/212,048
109.122.1.0/24256
109.169.0.0/1816,384
109.169.64.0/198,192

Showing the first 100 of 192, in address order. Complete list on RIPEstat

IPv6 prefixes (16 prefixes)

Prefix
2001:1b40::/32
2a00:5d80::/32
2a01:61c0::/40
2a02:8c8::/32
2a02:b10:1::/48
2a02:2658::/32
2a02:2658:2000::/36
2a02:7f40::/32
2a03:b200::/29
2a03:ca80::/32
2a03:ca81::/32
2a04:de40::/42
2a04:de40::/48
2a0b:4580::/32
2a0c:4380::/40
2a12:2201::/32

Neighbours

Upstreams (transit or peers) (44)

ASNetworkVisibility
AS6461Zayo Bandwidth2,052
AS174Cogent Communications, LLC1,927
AS6939Hurricane Electric LLC633
AS49981WorldStream WorldStream B.V.266
AS25091IP-Max SA156
AS33891Core-Backbone GmbH117
AS34549meerfarbig GmbH & Co. KG106
AS5405Inter.link GmbH80
AS34927iFog GmbH63
AS50304Blix Solutions AS62
AS21320GEANT Vereniging45
AS4637Telstra Global42
AS14840BR.Digital Telecom42
AS34177Celeste SAS42
AS48362Stadtwerke Feldkirch42
AS12779IT.Gate S.p.A.40
AS37497Network Platforms (PTY) LTD40
AS3214xTom GmbH39
AS9002RETN Limited39
AS35280F5 Networks SARL38
AS7195EDGEUNO S.A.S34
AS29075IELO-LIAZO SERVICES SAS32
AS20562Broadband Hosting B.V.26
AS29131-24
AS37468Angola Cables23
AS3303Swisscom (Schweiz) AG22
AS3741Dimension Data22
AS4455IX Reach Ltd22
AS6204INTERKVM HOST SRL21
AS15958CETIN Ltd. Belgrade21

The 30 most visible of 44.

Downstreams (customers) (21)

ASNetworkVisibility
AS60004ShaneMcC Ltd713
AS47264Iomart Managed Services Limited633
AS208621logicforge LogicForge Limited457
AS50957MEMSET Ltd361
AS35425Iomart Managed Services Limited359
AS29200Eseye Ltd357
AS200876Evolving Networks Limited286
AS21260The Positive Internet Company Ltd276
AS201715ineedbr Ineedbroadband Ltd268
AS206332Arrow Business Communications Limited265
AS206078-264
AS212601-261
AS33968-260
AS199542-260
AS201230-259
AS49967-254
AS216036-250
AS51320-249
AS9678-150
AS200083-85
AS211167-43

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.