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Autonomous System

AS41998 · NetCom BW GmbH

Overview

AS41998 is announced on the Internet: RIPE RIS route collectors currently see 64 IPv4 prefixes and 3 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 102,912 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 58 upstream neighbours (transit providers or peers) and 22 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Core-Backbone GmbH (AS33891), and Arelion Sweden AB (AS1299). AS41998 was assigned by RIPE NCC, and its registration country is Germany.

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 62.152.160.1, the first address of 62.152.160.0/19. 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 (64 prefixes)

PrefixAddresses
5.42.136.0/221,024
5.42.140.0/221,024
31.25.40.0/212,048
31.25.46.0/23512
37.25.48.0/212,048
37.60.168.0/212,048
37.228.176.0/204,096
46.182.136.0/212,048
62.152.160.0/198,192
83.242.36.0/221,024
83.242.40.0/212,048
83.242.48.0/204,096
88.218.208.0/221,024
91.103.112.0/212,048
93.118.0.0/212,048
93.118.8.0/212,048
93.118.16.0/212,048
93.118.24.0/212,048
93.184.176.0/204,096
94.124.208.0/212,048
94.176.240.0/204,096
145.14.192.0/204,096
149.249.56.0/212,048
153.92.80.0/204,096
171.33.176.0/221,024
171.33.180.0/221,024
178.212.90.0/23512
178.212.94.0/23512
185.3.80.0/221,024
185.6.96.0/221,024
185.7.68.0/24256
185.36.120.0/221,024
185.61.28.0/221,024
185.107.4.0/221,024
185.108.230.0/23512
185.160.200.0/221,024
185.210.8.0/221,024
185.244.200.0/221,024
188.93.216.0/212,048
188.244.100.0/221,024
193.31.20.0/221,024
193.31.44.0/221,024
193.84.240.0/221,024
193.106.32.0/221,024
193.151.4.0/221,024
193.238.104.0/221,024
194.76.2.0/24256
194.76.3.0/24256
194.76.4.0/24256
194.76.5.0/24256
194.76.6.0/24256
194.76.7.0/24256
194.76.222.0/24256
194.140.112.0/204,096
212.86.176.0/221,024
212.86.184.0/221,024
213.153.68.0/221,024
213.153.76.0/221,024
213.153.80.0/221,024
213.153.84.0/221,024
213.153.88.0/221,024
213.153.92.0/221,024
217.66.136.0/212,048
217.78.160.0/204,096

IPv6 prefixes (3 prefixes)

Prefix
2a00:79c0::/32
2a02:17b0::/32
2a03:b880::/29

Neighbours

Upstreams (transit or peers) (58)

ASNetworkVisibility
AS6939Hurricane Electric LLC2,022
AS33891Core-Backbone GmbH1,367
AS1299Arelion Sweden AB1,366
AS34549meerfarbig GmbH & Co. KG65
AS13030Init7 (Switzerland) Ltd.61
AS3320Deutsche Telekom AG59
AS4230CLARO S.A.58
AS20485Joint Stock Company TransTeleCom45
AS25091IP-Max SA45
AS29691Nine Internet Solutions AG45
AS14840BR.Digital Telecom44
AS20764CJSC RASCOM44
AS29632Netassist International EOOD44
AS34177Celeste SAS43
AS41327Fiber Telecom S.p.A.43
AS48362Stadtwerke Feldkirch42
AS49434FBW NETWORKS SAS42
AS3935131173 Services AB40
AS12779IT.Gate S.p.A.38
AS5405Inter.link GmbH37
AS50673Serverius Holding B.V.34
AS24961WIIT AG33
AS29075IELO-LIAZO SERVICES SAS30
AS34019Hivane Association30
AS35280F5 Networks SARL29
AS8455atom86 BV28
AS8298IPng Networks GmbH26
AS35625Eurofiber France SAS25
AS47147Anexia Cloud Solutions GmbH24
AS34927iFog GmbH23

The 30 most visible of 58.

Downstreams (customers) (22)

ASNetworkVisibility
AS200638JH-Computers GmbH721
AS203865overturn technologies GmbH416
AS209467Druckhaus Waiblingen Remstal-Bote GmbH412
AS203829Leitz GmbH & Co. KG411
AS201734Camlog Management GmbH409
AS207572Stadtwerke Baden-Baden403
AS206374INNEO Solutions GmbH379
AS51417TBits.net GmbH355
AS30915Liebherr-IT Services GmbH354
AS202462Mineraloelraffinerie Oberrhein GmbH & Co KG296
AS209081-274
AS31007-267
AS211569-266
AS214289-266
AS15698-265
AS203085-264
AS210651-264
AS39913cloud4you Manuel Wannemacher256
AS212403-253
AS199963-244
AS41700-230
AS210585-191

89 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.