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Autonomous System

AS23005 · SWITCH, LTD

Overview

AS23005 is announced on the Internet: RIPE RIS route collectors currently see 161 IPv4 prefixes and 13 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 323,072 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 5 upstream neighbours (transit providers or peers) and 135 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Level 3 Parent, LLC (AS3356), and Windstream Communications LLC (AS7029). AS23005 was assigned by ARIN, and its registration country is United States.

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

The trace goes to 136.179.0.1, the first address of 136.179.0.0/16. 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 (161 prefixes)

PrefixAddresses
63.100.176.0/24256
64.9.128.0/1816,384
64.9.140.0/24256
64.9.145.0/24256
64.9.148.0/24256
64.9.155.0/24256
64.9.160.0/24256
64.28.239.0/24256
64.79.128.0/198,192
64.79.136.0/24256
64.79.138.0/24256
64.79.140.0/24256
64.79.150.0/24256
64.84.0.0/24256
64.84.7.0/24256
64.84.17.0/24256
64.84.18.0/24256
64.84.19.0/24256
64.84.20.0/24256
64.84.37.0/24256
64.84.39.0/24256
64.84.46.0/24256
64.84.62.0/24256
64.201.236.0/24256
64.239.225.0/24256
65.169.144.0/24256
66.23.215.0/24256
66.116.96.0/198,192
66.116.100.0/24256
66.209.64.0/198,192
66.209.64.0/24256
66.209.85.0/24256
69.48.148.0/24256
69.194.128.0/204,096
69.194.132.0/24256
69.194.134.0/24256
69.194.143.0/24256
74.120.240.0/212,048
74.122.224.0/212,048
74.122.228.0/24256
100.42.120.0/24256
104.167.208.0/221,024
104.244.28.0/221,024
107.191.176.0/24256
107.191.177.0/24256
107.191.178.0/24256
107.191.180.0/24256
107.191.183.0/24256
107.191.188.0/24256
136.179.0.0/1665,536
136.179.52.0/24256
139.60.96.0/23512
139.138.49.0/24256
143.223.174.0/24256
155.130.0.0/1665,536
155.130.0.0/212,048
155.130.8.0/212,048
155.130.16.0/212,048
155.130.16.0/24256
155.130.23.0/24256
155.130.24.0/24256
155.130.25.0/24256
155.130.64.0/204,096
155.130.67.0/24256
155.130.80.0/24256
155.130.82.0/24256
155.130.128.0/198,192
155.130.128.0/212,048
155.130.128.0/221,024
155.130.131.0/24256
155.130.132.0/24256
155.130.134.0/24256
155.130.136.0/212,048
155.130.136.0/221,024
155.130.138.0/24256
155.130.139.0/24256
155.130.144.0/221,024
155.130.152.0/24256
156.20.172.0/24256
156.20.173.0/24256
156.20.174.0/24256
156.20.175.0/24256
160.231.200.0/212,048
162.0.153.0/24256
167.94.149.0/24256
167.94.154.0/24256
168.245.159.0/24256
170.39.10.0/24256
170.62.188.0/23512
170.136.0.0/221,024
170.136.108.0/24256
170.136.110.0/24256
170.136.112.0/24256
172.87.36.0/221,024
172.99.228.0/24256
172.99.229.0/24256
172.99.230.0/24256
172.99.231.0/24256
192.33.146.0/24256
192.64.240.0/24256

Showing the first 100 of 161, in address order. Complete list on RIPEstat

IPv6 prefixes (13 prefixes)

Prefix
2602:f45f::/48
2602:f983:5::/48
2602:ff64::/36
2606:a600::/32
2606:a600:4000::/36
2606:a600:6000::/36
2606:a600:8000::/36
2606:a600:fff0::/48
2606:a600:fff1::/48
2607:ff60::/32
2607:ff60:400a::/48
2607:ff60:400d::/48
2607:ff60:5003::/48

Neighbours

Upstreams (transit or peers) (5)

ASNetworkVisibility
AS1299Arelion Sweden AB16,073
AS3356Level 3 Parent, LLC15,717
AS7029Windstream Communications LLC842
AS701Verizon Business793
AS7018AT&T Enterprises, LLC359

Downstreams (customers) (135)

ASNetworkVisibility
AS46746NTT Managed Services Americas, LLC869
AS3614Dell, Inc.633
AS397933Clark Associates, Inc.581
AS395349Cloudsafe, Ltd.558
AS47094Itron504
AS10982TiVo, Inc.503
AS393906TSI496
AS26914Synoptek, LLC485
AS55248Whoa Networks Inc416
AS394976Abacus Data Systems, Inc.397
AS46550-356
AS20251-354
AS398885-353
AS55243-351
AS63061-351
AS127-350
AS10487-347
AS399281-339
AS12061-336
AS16417Cisco Systems Ironport Division335
AS27646-305
AS20062-299
AS22229-299
AS54271-299
AS22844-298
AS46263-292
AS12075-288
AS16667-285
AS55143-284
AS32969-273

The 30 most visible of 135.

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.