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Autonomous System

AS24961 · WIIT AG

Overview

AS24961 is announced on the Internet: RIPE RIS route collectors currently see 47 IPv4 prefixes and 14 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 132,096 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 90 upstream neighbours (transit providers or peers) and 1,930 downstream neighbours (customers or networks it carries). Its most visible upstreams are Sarah Rossius trading as Servperso Systems (AS34872), Level 3 Parent, LLC (AS3356), and Cogent Communications, LLC (AS174). AS24961 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:03 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 89.163.128.1, the first address of 89.163.128.0/17. 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 (47 prefixes)

PrefixAddresses
5.104.104.0/212,048
5.175.165.0/24256
5.199.128.0/204,096
37.157.248.0/212,048
45.81.132.0/221,024
45.92.136.0/221,024
45.133.156.0/23512
46.20.32.0/204,096
46.228.192.0/204,096
62.141.32.0/204,096
78.31.64.0/212,048
80.82.208.0/204,096
81.30.144.0/204,096
83.136.80.0/212,048
85.14.192.0/1816,384
85.114.128.0/198,192
89.163.128.0/1732,768
91.194.84.0/24256
91.194.85.0/24256
91.199.44.0/24256
91.212.140.0/24256
91.212.153.0/24256
91.212.159.0/24256
91.212.163.0/24256
92.60.64.0/23512
93.186.192.0/204,096
146.0.32.0/204,096
185.15.244.0/221,024
185.19.186.0/24256
185.45.151.0/24256
185.114.108.0/24256
185.114.109.0/24256
185.145.199.0/24256
185.171.218.0/23512
185.219.208.0/221,024
185.231.220.0/24256
185.249.64.0/221,024
193.111.198.0/23512
193.176.1.0/24256
193.192.60.0/23512
193.193.190.0/23512
194.9.182.0/23512
194.87.4.0/24256
194.93.103.0/24256
194.107.129.0/24256
213.202.192.0/1816,384
217.79.176.0/204,096

IPv6 prefixes (14 prefixes)

Prefix
2001:678:10e8::/48
2001:4ba0::/32
2001:4ba1::/32
2001:4ba3::/32
2001:4ba4::/32
2001:4ba6::/32
2a00:c320:410::/48
2a01:480::/32
2a0a:db80:2000::/40
2a0a:db80:8000::/40
2a0a:db80:c000::/36
2a0d:b700::/32
2a0e:4680::/32
2a0e:97c0:3e1::/48

Neighbours

Upstreams (transit or peers) (90)

ASNetworkVisibility
AS34872Sarah Rossius trading as Servperso Systems111,361
AS3356Level 3 Parent, LLC24,216
AS174Cogent Communications, LLC20,849
AS6939Hurricane Electric LLC19,072
AS3257GTT Communications Inc.15,028
AS3320Deutsche Telekom AG8,572
AS1299Arelion Sweden AB8,540
AS6461Zayo Bandwidth7,997
AS4637Telstra Global2,690
AS7195EDGEUNO S.A.S2,500
AS6830LibertyGlobal Liberty Global Europe Holding B.V.1,681
AS14840BR.Digital Telecom1,619
AS37468Angola Cables1,519
AS20764CJSC RASCOM1,486
AS31133PJSC MegaFon1,422
AS8220COLT Technology Services Group Limited1,084
AS4230CLARO S.A.1,024
AS33891Core-Backbone GmbH1,011
AS3216PJSC "Vimpelcom"991
AS9002RETN Limited916
AS22356Durand do Brasil Ltda825
AS7713PT Telekomunikasi Indonesia617
AS20485Joint Stock Company TransTeleCom613
AS34549meerfarbig GmbH & Co. KG569
AS37100SEACOM Limited542
AS5405Inter.link GmbH493
AS34927iFog GmbH447
AS50304Blix Solutions AS434
AS21320GEANT Vereniging432
AS1257Tele2 Sverige AB418

The 30 most visible of 90.

Downstreams (customers) (1,930)

ASNetworkVisibility
AS3356Level 3 Parent, LLC18,954
AS174Cogent Communications, LLC17,535
AS34872Sarah Rossius trading as Servperso Systems11,520
AS3257GTT Communications Inc.10,411
AS3320Deutsche Telekom AG6,310
AS6461Zayo Bandwidth5,963
AS1299Arelion Sweden AB5,915
AS50873David Doepelheuer2,850
AS7195EDGEUNO S.A.S2,162
AS4637Telstra Global1,808
AS59645-1,296
AS31133PJSC MegaFon1,226
AS6830LibertyGlobal Liberty Global Europe Holding B.V.1,205
AS12389PJSC Rostelecom1,160
AS37468Angola Cables1,105
AS8220COLT Technology Services Group Limited1,033
AS15960-926
AS4230CLARO S.A.905
AS3216PJSC "Vimpelcom"891
AS9498BHARTI Airtel Ltd.849
AS20764CJSC RASCOM838
AS33891Core-Backbone GmbH836
AS6939Hurricane Electric LLC725
AS32787Akamai Technologies, Inc.714
AS137409GSL Networks Pty LTD713
AS14840BR.Digital Telecom707
AS49585CoreRoute UG696
AS204035-680
AS207983-666
AS22356Durand do Brasil Ltda607

The 30 most visible of 1,930.

2,110 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.