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Autonomous System

AS58511 · Anycast Global Backbone

Overview

AS58511 is announced on the Internet: RIPE RIS route collectors currently see 10 IPv4 prefixes and 2 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 22,528 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 81 upstream neighbours (transit providers or peers) and 32 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), GTT Communications Inc. (AS3257), and Telstra Limited (AS1221). AS58511 was assigned by APNIC, and its registration country is Australia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 18, 2026 at 11:47 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 125.254.64.1, the first address of 125.254.64.0/18. 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 (10 prefixes)

PrefixAddresses
43.225.32.0/221,024
58.96.158.0/23512
103.17.220.0/23512
103.17.223.0/24256
103.29.174.0/23512
103.70.72.0/221,024
103.227.66.0/24256
103.247.0.0/221,024
125.254.64.0/1816,384
163.47.48.0/221,024

IPv6 prefixes (2 prefixes)

Prefix
2400:5240::/32
2400:8280::/32

Neighbours

Upstreams (transit or peers) (81)

ASNetworkVisibility
AS1299Arelion Sweden AB3,000
AS3257GTT Communications Inc.1,429
AS1221Telstra Limited1,343
AS3491PCCW Global (HK) Ltd.1,170
AS6939Hurricane Electric LLC398
AS13030Init7 (Switzerland) Ltd.243
AS34549meerfarbig GmbH & Co. KG226
AS50304Blix Solutions AS195
AS34177Celeste SAS162
AS48362Stadtwerke Feldkirch148
AS29691Nine Internet Solutions AG144
AS12779IT.Gate S.p.A.142
AS14840BR.Digital Telecom142
AS25091IP-Max SA142
AS3935131173 Services AB142
AS37497Network Platforms (PTY) LTD139
AS8218Zayo Infrastructure France SA137
AS8298IPng Networks GmbH137
AS24961WIIT AG135
AS5405Inter.link GmbH133
AS20764CJSC RASCOM131
AS41327Fiber Telecom S.p.A.124
AS9002RETN Limited123
AS34019Hivane Association122
AS56911Warian S.R.L.116
AS6057Administracion Nacional de Telecomunicaciones113
AS4230CLARO S.A.110
AS8758Iway AG106
AS50673Serverius Holding B.V.98
AS29075-96

The 30 most visible of 81.

Downstreams (customers) (32)

ASNetworkVisibility
AS9280Servers Australia Pty Ltd4,452
AS132072Anycast Access2,885
AS55811Anycast Holdings Pty Ltd1,001
AS151336Verge940
AS45780Broadband Solutions Pty Ltd915
AS7628CorpCloud Pty Ltd777
AS24479Nexium, Ergon Energy Telecommunications.774
AS38333Symbio Networks610
AS17889Intraceptives Pty Ltd536
AS133930Tesserent Pty Ltd486
AS7551-469
AS140736-430
AS134743-408
AS17473-385
AS15695-373
AS45638-302
AS45447-300
AS132791-278
AS134067-270
AS9224-268
AS9461-268
AS133196-268
AS136045-268
AS140891-268
AS137549-266
AS133914-247
AS137863-224
AS134242-218
AS38172-193
AS136805-136

The 30 most visible of 32.

134 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.