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Autonomous System

AS4657 · StarHub Ltd

Overview

AS4657 is announced on the Internet: RIPE RIS route collectors currently see 208 IPv4 prefixes and 89 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 715,264 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 98 upstream neighbours (transit providers or peers) and 930 downstream neighbours (customers or networks it carries). Its most visible upstreams are MyRepublic Ltd. (AS132132), Cogent Communications, LLC (AS174), and Arelion Sweden AB (AS1299). AS4657 was assigned by APNIC, and its registration country is Singapore.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:57 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 171.0.0.1

The trace goes to 171.0.0.1, the first address of 171.0.0.0/15. 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 (208 prefixes)

PrefixAddresses
23.206.180.0/221,024
27.54.0.0/1816,384
27.54.53.0/24256
27.54.59.0/24256
27.54.60.0/24256
27.54.61.0/24256
27.54.62.0/24256
38.46.202.0/24256
38.46.203.0/24256
39.109.128.0/1732,768
43.227.228.0/23512
45.65.0.0/221,024
61.8.192.0/198,192
61.8.196.0/221,024
61.8.205.0/24256
61.8.207.0/24256
61.8.208.0/24256
61.8.216.0/24256
61.8.224.0/198,192
61.8.224.0/24256
101.127.0.0/1665,536
101.127.192.0/1816,384
101.127.224.0/24256
101.127.250.0/24256
103.17.144.0/221,024
103.28.208.0/221,024
103.149.23.0/24256
103.254.252.0/23512
103.254.254.0/24256
111.223.64.0/1816,384
111.223.64.0/24256
113.10.64.0/1816,384
117.20.128.0/1816,384
122.11.128.0/1732,768
122.11.128.0/1816,384
122.11.132.0/24256
122.11.133.0/24256
122.11.134.0/24256
122.11.135.0/24256
122.11.136.0/24256
122.11.137.0/24256
122.11.138.0/24256
122.11.139.0/24256
122.11.140.0/24256
122.11.141.0/24256
122.11.144.0/24256
122.11.146.0/24256
122.11.147.0/24256
122.11.149.0/24256
122.11.161.0/24256
122.11.163.0/24256
122.11.164.0/24256
122.11.173.0/24256
122.11.174.0/24256
122.11.176.0/24256
122.11.177.0/24256
122.11.178.0/24256
122.11.179.0/24256
122.11.180.0/24256
122.11.192.0/1816,384
122.11.193.0/24256
122.11.194.0/24256
122.11.195.0/24256
122.11.199.0/24256
122.11.200.0/24256
122.11.201.0/24256
122.11.202.0/24256
122.11.210.0/24256
122.11.220.0/24256
122.11.222.0/24256
122.11.223.0/24256
122.11.230.0/24256
122.11.231.0/24256
122.11.232.0/24256
122.11.233.0/24256
122.11.242.0/24256
122.11.243.0/24256
122.11.244.0/24256
122.11.250.0/24256
124.155.192.0/198,192
124.155.204.0/24256
124.155.205.0/24256
124.155.206.0/24256
124.155.207.0/24256
124.155.208.0/24256
124.155.209.0/24256
124.155.214.0/24256
124.155.215.0/24256
124.155.218.0/24256
124.155.222.0/24256
171.0.0.0/15131,072
171.207.0.0/1665,536
182.19.128.0/1732,768
182.19.252.0/24256
182.55.0.0/1665,536
182.55.245.0/24256
183.90.0.0/1732,768
183.90.64.0/1816,384
202.156.4.0/24256
202.156.10.0/24256

Showing the first 100 of 208, in address order. Complete list on RIPEstat

IPv6 prefixes (89 prefixes)

Prefix
2404:e800:de00::/64
2404:e800:de00:1::/64
2406:3000::/30
2406:3000::/32
2406:3000::/48
2406:3000:2::/48
2406:3000:2:109::/64
2406:3000:3::/48
2406:3000:3:8::/64
2406:3000:3:9::/64
2406:3000:3:b::/64
2406:3000:3:13::/64
2406:3000:3:15::/64
2406:3000:3:17::/64
2406:3000:3:19::/64
2406:3000:3:23::/64
2406:3000:3:29::/64
2406:3000:3:31::/64
2406:3000:3:34::/64
2406:3000:3:35::/64
2406:3000:3:36::/64
2406:3000:3:37::/64
2406:3000:3:38::/64
2406:3000:3:39::/64
2406:3000:3:3a::/64
2406:3000:3:3e::/64
2406:3000:3:4e::/64
2406:3000:3:4f::/64
2406:3000:6::/48
2406:3000:a::/64
2406:3000:a:1::/64
2406:3000:a:7::/64
2406:3000:a:8::/64
2406:3000:a:a::/64
2406:3000:a:b::/64
2406:3000:a:c::/64
2406:3000:a:e::/64
2406:3000:a:f::/64
2406:3000:a:13::/64
2406:3000:a:14::/64
2406:3000:a:19::/64
2406:3000:a:1c::/64
2406:3000:b::/48
2406:3000:c::/56
2406:3000:c:100::/56
2406:3000:f::/48
2406:3000:10::/48
2406:3000:11:6::/64
2406:3000:11:1000::/64
2406:3000:11:1003::/64
2406:3000:11:100b::/64
2406:3000:11:100f::/64
2406:3000:11:1012::/64
2406:3000:11:1013::/64
2406:3000:11:1014::/64
2406:3000:11:1017::/64
2406:3000:11:1018::/64
2406:3000:11:101a::/64
2406:3000:11:102a::/64
2406:3000:11:2000::/64
2406:3000:11:2003::/64
2406:3000:11:2005::/64
2406:3000:11:2006::/64
2406:3000:11:2008::/64
2406:3000:16::/48
2406:3000:2a::/48
2406:3000:31::/48
2406:3000:33::/48
2406:3000:34::/48
2406:3000:35::/56
2406:3000:42::/48
2406:3000:4c::/48
2406:3000:50::/48
2406:3000:53::/48
2406:3000:1000::/56
2406:3000:1000:100::/56
2406:3001:20:6::/64
2406:3001:20:75::/64
2406:3001:20:76::/64
2406:3001:20:78::/64
2406:3001:22:4::/64
2406:3001:22:5::/64
2406:3001:22:6::/64
2406:3001:22:7::/64
2406:3001:22:8::/64
2406:3001:22:9::/64
2406:3001:22:16::/64
2406:3001:22:17::/64
2406:3001:22:18::/64

Neighbours

Upstreams (transit or peers) (98)

ASNetworkVisibility
AS132132MyRepublic Ltd.86,578
AS174Cogent Communications, LLC5,715
AS1299Arelion Sweden AB5,563
AS6939Hurricane Electric LLC4,677
AS2914NTT America, Inc.2,985
AS4637Telstra Global2,209
AS9002RETN Limited1,588
AS6453TATA COMMUNICATIONS (AMERICA) INC941
AS34549meerfarbig GmbH & Co. KG773
AS24482SG.GS587
AS25091IP-Max SA567
AS3303Swisscom (Schweiz) AG444
AS8298IPng Networks GmbH408
AS20485Joint Stock Company TransTeleCom375
AS33891Core-Backbone GmbH365
AS50304Blix Solutions AS330
AS60068Datacamp Limited324
AS49434FBW NETWORKS SAS323
AS3935131173 Services AB305
AS34177-303
AS48362Stadtwerke Feldkirch289
AS50673Serverius Holding B.V.285
AS8455atom86 BV284
AS3356Level 3 Parent, LLC277
AS5405Inter.link GmbH258
AS17645-255
AS34019Hivane Association250
AS14840BR.Digital Telecom246
AS12779IT.Gate S.p.A.242
AS8218Zayo Infrastructure France SA240

The 30 most visible of 98.

Downstreams (customers) (930)

ASNetworkVisibility
AS9002RETN Limited19,146
AS6453TATA COMMUNICATIONS (AMERICA) INC18,362
AS6461Zayo Bandwidth7,564
AS4637Telstra Global7,349
AS174Cogent Communications, LLC7,298
AS2914NTT America, Inc.5,604
AS1299Arelion Sweden AB5,364
AS132132MyRepublic Ltd.2,832
AS140928STARHUB-T20025A - T200251,949
AS7195EDGEUNO S.A.S1,850
AS137831-1,272
AS17547-1,248
AS3356Level 3 Parent, LLC1,142
AS140929-1,079
AS45474-1,060
AS3300-1,035
AS31133PJSC MegaFon988
AS138345-878
AS38001-833
AS23856-807
AS18106-737
AS57304JSC "RetnNet"701
AS4058-666
AS4628Pacific Internet Pte Ltd665
AS55430-626
AS38719-532
AS45938-531
AS11245-530
AS3573Accenture LLP529
AS132236-528

The 30 most visible of 930.

173 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.