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Autonomous System

AS559 · Switch SWITCH

Overview

AS559 is announced on the Internet: RIPE RIS route collectors currently see 117 IPv4 prefixes and 9 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 2,184,960 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 70 upstream neighbours (transit providers or peers) and 10 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Zayo Bandwidth (AS6461), and GEANT Vereniging (AS20965). AS559 was assigned by ARIN, and its registration country is Switzerland.

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 128.178.0.1, the first address of 128.178.0.0/15. 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 (117 prefixes)

PrefixAddresses
82.130.64.0/1816,384
86.119.0.0/1665,536
89.206.64.0/1816,384
128.178.0.0/15131,072
129.129.0.0/1665,536
129.132.0.0/1665,536
129.194.0.0/15131,072
130.59.0.0/1665,536
130.60.0.0/1665,536
130.82.0.0/1665,536
130.92.0.0/1665,536
130.125.0.0/1665,536
130.223.0.0/1665,536
131.152.0.0/1665,536
134.21.0.0/1665,536
138.131.0.0/1665,536
141.249.0.0/1665,536
144.200.0.0/1665,536
146.136.0.0/1665,536
147.86.0.0/1665,536
147.88.0.0/1665,536
148.187.0.0/1665,536
148.196.0.0/1665,536
152.88.0.0/1665,536
152.96.0.0/1665,536
153.109.0.0/1665,536
155.105.0.0/1665,536
157.26.0.0/1665,536
160.85.0.0/1665,536
160.98.0.0/1665,536
161.62.0.0/1665,536
185.133.44.0/221,024
185.144.36.0/221,024
185.207.116.0/24256
185.207.117.0/24256
185.207.118.0/23512
192.12.247.0/24256
192.26.28.0/221,024
192.26.32.0/212,048
192.26.40.0/221,024
192.26.44.0/24256
192.26.46.0/23512
192.33.87.0/24256
192.33.89.0/24256
192.33.90.0/24256
192.33.91.0/24256
192.33.92.0/221,024
192.33.96.0/212,048
192.33.104.0/221,024
192.33.108.0/23512
192.33.110.0/24256
192.33.118.0/23512
192.33.120.0/212,048
192.33.192.0/204,096
192.33.208.0/221,024
192.33.212.0/221,024
192.33.216.0/221,024
192.33.220.0/24256
192.33.221.0/24256
192.33.222.0/23512
192.33.224.0/212,048
192.41.132.0/221,024
192.41.136.0/24256
192.41.149.0/24256
192.41.150.0/23512
192.41.152.0/212,048
192.41.160.0/24256
192.42.42.0/23512
192.42.44.0/221,024
192.42.180.0/221,024
192.42.184.0/212,048
192.42.192.0/212,048
192.42.200.0/23512
192.43.192.0/221,024
192.43.196.0/24256
192.47.244.0/221,024
192.47.248.0/23512
192.65.92.0/23512
192.101.176.0/24256
192.135.150.0/23512
192.135.151.0/24256
192.135.152.0/212,048
192.152.98.0/24256
193.5.22.0/24256
193.5.26.0/23512
193.5.53.0/24256
193.5.54.0/23512
193.5.58.0/24256
193.5.60.0/24256
193.5.152.0/221,024
193.5.168.0/221,024
193.8.136.0/23512
193.36.32.0/24256
193.73.125.0/24256
193.134.200.0/212,048
193.134.216.0/212,048
193.135.168.0/221,024
193.135.240.0/212,048
193.222.112.0/204,096
193.222.241.0/24256

Showing the first 100 of 117, in address order. Complete list on RIPEstat

IPv6 prefixes (9 prefixes)

Prefix
2001:620::/29
2001:620::/32
2001:67c:10ec::/48
2001:67c:16dc::/48
2a02:7dc0::/32
2a07:3e00::/29
2a0a:4ec0::/29
2a0b:1200::/29
2a0b:2040::/29

Neighbours

Upstreams (transit or peers) (70)

ASNetworkVisibility
AS6939Hurricane Electric LLC22,512
AS6461Zayo Bandwidth11,291
AS20965GEANT Vereniging7,070
AS7195EDGEUNO S.A.S3,944
AS37468Angola Cables2,088
AS14840BR.Digital Telecom1,856
AS4230CLARO S.A.1,347
AS8220COLT Technology Services Group Limited1,299
AS3320Deutsche Telekom AG1,250
AS20485Joint Stock Company TransTeleCom1,022
AS33891Core-Backbone GmbH951
AS9002RETN Limited752
AS7713PT Telekomunikasi Indonesia651
AS5405Inter.link GmbH650
AS20764CJSC RASCOM573
AS6663Euroweb Romania S.R.L.434
AS37100SEACOM Limited422
AS34927iFog GmbH294
AS17557Pakistan Telecommunication Company Limited288
AS35280F5 Networks SARL238
AS24961WIIT AG222
AS1299Arelion Sweden AB183
AS30781Free Pro SAS182
AS8455atom86 BV173
AS8218Zayo Infrastructure France SA170
AS3356Level 3 Parent, LLC160
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH154
AS50673Serverius Holding B.V.141
AS205103-136
AS3257GTT Communications Inc.121

The 30 most visible of 70.

Downstreams (customers) (10)

ASNetworkVisibility
AS200233bfh Berner Fachhochschule349
AS196722Schweizerische Nationalbank245
AS213196Universitaetsspital Basel233
AS205218Ente Ospedaliero Cantonale215
AS202123Nationale Alarmzentrale NEOC188
AS211540Stiftung Kantonsspital Graubuenden105
AS553Universitaet Stuttgart34
AS513CERN - European Organization for Nuclear Research4
AS25091IP-Max SA1
AS50837CLOUDSIGMA AG1

1,232 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.