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Autonomous System

AS21433 · AccentureFSSC Accenture UK Limited

Overview

AS21433 is announced on the Internet: RIPE RIS route collectors currently see 324 IPv4 prefixes and 63 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 69,888 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 83 upstream neighbours (transit providers or peers) and 1 downstream neighbour (customers or networks it carries). Its most visible upstreams are Vodafone Idea Ltd (AS55410), Globe Telecoms (AS4775), and Softnet Limited (AS135158). AS21433 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 10:59 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 170.251.120.1

The trace goes to 170.251.120.1, the first address of 170.251.120.0/21. 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 (324 prefixes)

PrefixAddresses
27.110.227.0/24256
144.36.2.0/24256
144.36.7.0/24256
144.36.26.0/23512
144.36.27.0/24256
144.36.29.0/24256
144.36.32.0/23512
144.36.32.0/24256
144.36.33.0/24256
144.36.44.0/24256
144.36.46.0/24256
144.36.47.0/24256
144.36.49.0/24256
144.36.50.0/24256
144.36.51.0/24256
144.36.70.0/23512
144.36.70.0/24256
144.36.110.0/24256
144.36.111.0/24256
144.36.112.0/24256
144.36.114.0/24256
144.36.115.0/24256
144.36.118.0/23512
144.36.118.0/24256
144.36.119.0/24256
144.36.120.0/23512
144.36.120.0/24256
144.36.121.0/24256
144.36.130.0/23512
144.36.130.0/24256
144.36.131.0/24256
144.36.134.0/23512
144.36.134.0/24256
144.36.135.0/24256
144.36.136.0/23512
144.36.136.0/24256
144.36.137.0/24256
144.36.138.0/23512
144.36.138.0/24256
144.36.139.0/24256
144.36.140.0/23512
144.36.140.0/24256
144.36.141.0/24256
144.36.150.0/24256
144.36.167.0/24256
144.36.168.0/23512
144.36.168.0/24256
144.36.169.0/24256
144.36.174.0/24256
144.36.182.0/23512
144.36.182.0/24256
144.36.183.0/24256
144.36.184.0/23512
144.36.184.0/24256
144.36.185.0/24256
144.36.188.0/23512
144.36.188.0/24256
144.36.189.0/24256
144.36.194.0/23512
144.36.194.0/24256
144.36.195.0/24256
144.36.196.0/24256
144.36.200.0/23512
144.36.200.0/24256
144.36.201.0/24256
144.36.202.0/24256
144.36.206.0/23512
144.36.206.0/24256
144.36.207.0/24256
144.36.210.0/23512
144.36.210.0/24256
144.36.211.0/24256
144.36.214.0/23512
144.36.214.0/24256
144.36.215.0/24256
144.36.220.0/23512
144.36.220.0/24256
144.36.221.0/24256
144.36.222.0/23512
144.36.222.0/24256
144.36.223.0/24256
144.36.224.0/23512
144.36.224.0/24256
144.36.225.0/24256
144.36.226.0/23512
144.36.226.0/24256
144.36.227.0/24256
144.36.228.0/23512
144.36.228.0/24256
144.36.229.0/24256
144.36.230.0/23512
144.36.230.0/24256
144.36.231.0/24256
144.36.233.0/24256
144.36.234.0/23512
144.36.234.0/24256
144.36.235.0/24256
144.36.237.0/24256
144.36.238.0/24256
144.36.239.0/24256

Showing the first 100 of 324, in address order. Complete list on RIPEstat

IPv6 prefixes (63 prefixes)

Prefix
2404:3d00:40f6::/47
2404:3d00:40f6::/48
2404:3d00:413a::/47
2404:3d00:413a::/48
2404:3d00:41c4::/48
2404:3d00:41e2::/47
2404:3d00:41ee::/47
2404:3d00:41ef::/48
2801:1f0:4048::/47
2801:1f0:404c::/47
2801:1f0:4056::/47
2801:1f0:4058::/47
2801:1f0:405a::/47
2801:1f0:406e::/47
2801:1f0:4070::/47
2801:1f0:4074::/47
2801:1f0:4076::/47
2a02:ee80:102::/47
2a02:ee80:40b2::/47
2a02:ee80:40c0::/47
2a02:ee80:40db::/48
2a02:ee80:419a::/47
2a02:ee80:419a::/48
2a02:ee80:419b::/48
2a02:ee80:41c2::/47
2a02:ee80:41c2::/48
2a02:ee80:41ec::/47
2a02:ee80:4208::/48
2a02:ee80:4209::/48
2a02:ee80:4236::/47
2a02:ee80:4236::/48
2a02:ee80:4248::/47
2a02:ee80:4248::/48
2a02:ee80:4250::/47
2a02:ee80:4250::/48
2a02:ee80:42ce::/47
2a02:ee80:42f8::/47
2a02:ee80:42f8::/48
2a02:ee80:4308::/47
2a02:ee80:4318::/47
2a02:ee80:431e::/47
2a02:ee80:432d::/48
2a02:ee80:432e::/47
2a02:ee80:433a::/47
2a02:ee80:433a::/48
2a02:ee80:434c::/47
2a02:ee80:4368::/47
2a02:ee80:436e::/47
2a02:ee80:4382::/47
2a02:ee80:4384::/47
2a02:ee80:4386::/47
2a02:ee80:438e::/47
2a02:ee80:4398::/47
2a02:ee80:439a::/47
2a02:ee80:439c::/47
2a02:ee80:439e::/47
2a02:ee80:43a0::/47
2c0f:f6d8:4018::/47
2c0f:f6d8:4018::/48
2c0f:f6d8:4019::/48
2c0f:f6d8:4022::/47
2c0f:f6d8:402a::/47
2c0f:f6d8:402a::/48

Neighbours

Upstreams (transit or peers) (83)

ASNetworkVisibility
AS55410Vodafone Idea Ltd1,209
AS4775Globe Telecoms925
AS135158Softnet Limited869
AS9498BHARTI Airtel Ltd.866
AS2516KDDI CORPORATION783
AS9583Sify Limited722
AS529651TELECOM SERVICOS DE TECNOLOGIA EM INTERNET LTDA674
AS15830Equinix Equinix (EMEA) Acquisition Enterprises B.V.667
AS17639Converge ICT Solutions Inc.611
AS9299Philippine Long Distance Telephone Company595
AS12302Vodafone Romania S.A.552
AS12874Fastweb SpA550
AS55821RADIUS TELECOMS, INC.512
AS55423JasTel Network510
AS9658-501
AS4230CLARO S.A.492
AS4755TATA Communications formerly VSNL is Leading ISP474
AS8866-473
AS9930TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia455
AS10429TELEFONICA BRASIL S.A451
AS7738V tal446
AS5606GTS Telecom SRL438
AS9050Orange Romania S.A.436
AS23889-431
AS3356Level 3 Parent, LLC419
AS8220COLT Technology Services Group Limited412
AS4713-402
AS6799-389
AS9002RETN Limited385
AS7018AT&T Enterprises, LLC370

The 30 most visible of 83.

Downstreams (customers) (1)

ASNetworkVisibility
AS55423JasTel Network509

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.