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Autonomous System

AS137409 · GSL Networks Pty LTD

Overview

AS137409 is announced on the Internet: RIPE RIS route collectors currently see 573 IPv4 prefixes and 1,064 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 145,920 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 158 upstream neighbours (transit providers or peers) and 4,551 downstream neighbours (customers or networks it carries). Its most visible upstreams are Cogent Communications, LLC (AS174), SERVERD SAS (AS62000), and GTT Communications Inc. (AS3257). AS137409 was assigned by APNIC, and its registration country is Australia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:51 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 202.165.64.1, the first address of 202.165.64.0/21. 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 (573 prefixes)

PrefixAddresses
5.62.16.0/24256
5.62.18.0/24256
5.62.19.0/24256
5.62.20.0/24256
5.62.22.0/24256
5.62.23.0/24256
5.62.24.0/24256
5.62.33.0/24256
5.62.34.0/24256
5.62.35.0/24256
5.62.39.0/24256
5.62.41.0/24256
5.62.49.0/24256
5.180.179.0/24256
5.252.80.0/24256
13.141.49.0/24256
14.102.61.0/24256
14.102.62.0/24256
14.102.84.0/24256
14.102.86.0/24256
16.5.17.0/24256
23.26.33.0/24256
23.26.36.0/24256
23.27.69.0/24256
23.27.92.0/24256
23.27.179.0/24256
31.14.72.0/24256
31.14.73.0/24256
31.14.74.0/24256
31.14.75.0/24256
31.56.153.0/24256
31.58.38.0/24256
31.135.4.0/24256
31.135.5.0/24256
31.217.248.0/24256
38.57.36.0/24256
38.57.37.0/24256
43.226.229.0/24256
45.8.16.0/24256
45.8.24.0/23512
45.8.70.0/24256
45.9.0.0/24256
45.67.97.0/24256
45.74.17.0/24256
45.80.6.0/24256
45.84.56.0/24256
45.84.102.0/24256
45.91.22.0/24256
45.93.164.0/24256
45.121.208.0/24256
45.121.209.0/24256
45.121.210.0/23512
45.121.210.0/24256
45.121.211.0/24256
45.128.198.0/24256
45.130.141.0/24256
45.130.202.0/23512
45.131.192.0/24256
45.132.224.0/24256
45.132.225.0/24256
45.133.4.0/24256
45.133.5.0/24256
45.133.6.0/24256
45.133.7.0/24256
45.139.4.0/24256
45.139.5.0/24256
45.150.180.0/24256
45.152.32.0/24256
45.152.33.0/24256
45.154.152.0/24256
45.154.153.0/24256
45.154.154.0/24256
45.154.155.0/24256
46.173.240.0/24256
46.173.241.0/24256
46.173.242.0/24256
46.173.243.0/24256
46.173.252.0/24256
46.173.253.0/24256
51.194.224.0/24256
62.169.128.0/24256
62.169.130.0/24256
64.50.200.0/221,024
64.64.98.0/24256
64.64.99.0/24256
64.64.104.0/221,024
64.64.112.0/24256
64.64.123.0/24256
64.204.138.0/24256
66.56.87.0/24256
67.210.124.0/23512
69.33.198.0/24256
74.0.16.0/24256
74.0.39.0/24256
74.114.57.0/24256
74.114.58.0/24256
77.36.112.0/24256
77.36.113.0/24256
77.36.114.0/24256
77.36.115.0/24256

Showing the first 100 of 573, in address order. Complete list on RIPEstat

IPv6 prefixes (1,064 prefixes)

Prefix
2401:3bc0:8::/48
2401:3bc0:b::/48
2401:3bc0:c::/48
2401:3bc0:e::/48
2401:3bc0:300::/48
2401:3bc0:302::/48
2401:3bc0:400::/48
2401:3bc0:600::/48
2401:3bc0:700::/48
2401:3bc0:800::/48
2401:3bc0:900::/48
2401:3bc0:1000::/46
2401:3bc0:1000::/48
2401:3bc0:1001::/48
2401:3bc0:100c::/48
2401:3bc0:100d::/48
2401:3bc0:100e::/48
2401:3bc0:100f::/48
2401:3bc0:1010::/48
2401:3bc0:1011::/48
2401:3bc0:1013::/48
2401:3bc0:1016::/48
2401:3bc0:1018::/48
2401:3bc0:1019::/48
2401:3bc0:101b::/48
2401:3bc0:101c::/48
2401:3bc0:2000::/44
2401:3cc0:3::/48
2401:3cc0:8::/48
2401:3cc0:9::/48
2401:3cc0:12::/48
2401:3cc0:13::/48
2401:3cc0:19::/48
2401:3cc0:24::/48
2401:3cc0:25::/48
2401:3cc0:26::/48
2401:3cc0:27::/48
2401:3cc0:28::/48
2401:3cc0:29::/48
2401:3cc0:2a::/48
2401:3cc0:30::/48
2401:3cc0:600::/48
2401:3cc0:700::/48
2401:3cc0:800::/48
2401:3cc0:898::/48
2401:3cc0:900::/48
2401:3cc0:100c::/48
2401:3cc0:100e::/48
2401:3cc0:100f::/48
2401:3cc0:1011::/48
2401:3cc0:1017::/48
2401:3cc0:1019::/48
2401:3cc0:101c::/48
2401:3cc0:1800::/44
2401:3cc0:4001::/48
2402:5ac0::/32
2402:5ac0:100::/40
2402:5ac0:100::/48
2402:5ac0:101::/48
2402:5ac0:500::/48
2402:5ac0:600::/40
2402:5ac0:700::/40
2402:5ac0:800::/40
2402:5ac0:900::/40
2402:5ac0:d00::/40
2402:5ac0:f00::/40
2402:5ac0:1000::/40
2402:5ac0:1200::/40
2402:5ac0:1200::/48
2402:5ac0:1400::/44
2402:5ac0:ff00::/48
2402:5ac0:ff03::/48
2402:5ac0:ff04::/48
2402:5ac0:ff05::/48
2402:5ac0:ff06::/48
2402:5ac0:ff07::/48
2402:5ac0:ff08::/48
2402:5ac0:ff09::/48
2402:5ac0:ff0a::/48
2402:5ac0:ff0b::/48
2404:b9c0:10::/44
2404:b9c0:20::/44
2404:b9c0:30::/44
2404:b9c0:60::/44
2404:b9c0:60::/48
2404:b9c0:70::/44
2404:b9c0:80::/44
2404:b9c0:90::/44
2404:b9c0:d0::/44
2404:b9c0:f0::/44
2404:b9c0:100::/44
2404:b9c0:101::/48
2404:b9c0:102::/48
2404:b9c0:120::/44
2404:b9c0:4400::/44
2606:f181::/32
2a07:e342::/48
2a07:e342:1::/48
2a07:e342:2::/48
2a07:e342:3::/48

Showing the first 100 of 1,064, in address order. Complete list on RIPEstat

Neighbours

Upstreams (transit or peers) (158)

ASNetworkVisibility
AS174Cogent Communications, LLC15,104
AS62000SERVERD SAS11,471
AS3257GTT Communications Inc.11,390
AS6461Zayo Bandwidth9,756
AS6939Hurricane Electric LLC9,479
AS8529Zain Omantel International FZ-LLC9,252
AS49127Asimo Networks B.V.6,843
AS38008Aperture Science Limited4,969
AS3491PCCW Global (HK) Ltd.4,080
AS917Misaka Network, Inc.3,363
AS34549meerfarbig GmbH & Co. KG3,189
AS3356Level 3 Parent, LLC3,170
AS13030Init7 (Switzerland) Ltd.3,043
AS25091IP-Max SA2,729
AS20764CJSC RASCOM2,463
AS24482SG.GS2,381
AS8298IPng Networks GmbH2,336
AS48362Stadtwerke Feldkirch2,266
AS3214xTom GmbH2,219
AS6057Administracion Nacional de Telecomunicaciones2,194
AS29691Nine Internet Solutions AG2,171
AS8280SYNAPSECOM S.A. Provider of Telecommunications and Internet Services2,169
AS34927iFog GmbH2,079
AS3935131173 Services AB2,060
AS50304Blix Solutions AS2,050
AS47147Anexia Cloud Solutions GmbH1,996
AS6830LibertyGlobal Liberty Global Europe Holding B.V.1,963
AS34177Celeste SAS1,949
AS63927RISE1,894
AS61626UNIVERSIDADE ESTADUAL DE PONTA GROSSA1,888

The 30 most visible of 158.

Downstreams (customers) (4,551)

ASNetworkVisibility
AS8529Zain Omantel International FZ-LLC25,856
AS63927RISE16,025
AS17433Hytron Network Services Limited11,199
AS62000SERVERD SAS10,516
AS134090Leaptel10,120
AS12189PhoenixNAP LLC9,794
AS394177SHIFT HOSTING LLC9,784
AS270735COMPUTIZE NETWORK TELECOMUNICACOES LTDA9,504
AS53587AZURE TECHNOLOGY CO., LIMITED8,366
AS9516SAKURA LINK LIMITED8,107
AS23961-8,015
AS63473HostHatch, LLC7,682
AS931-6,842
AS174Cogent Communications, LLC6,135
AS207841-5,722
AS49127-5,604
AS983Akari Networks LLC5,303
AS63018-4,331
AS328748-4,323
AS142064VergeTel4,240
AS22672-4,075
AS140227-3,873
AS20200-3,705
AS39637-3,244
AS1002Bytefilter LLC3,162
AS807FORK SYSTEMS3,073
AS134555Encoo Pty Ltd2,990
AS49915-2,871
AS41378-2,783
AS18423RAID Networks Co., Ltd.2,782

The 30 most visible of 4,551.

369 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.