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Autonomous System

AS9145 · EWE TEL GmbH

Overview

AS9145 is announced on the Internet: RIPE RIS route collectors currently see 54 IPv4 prefixes and 7 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 921,088 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 90 upstream neighbours (transit providers or peers) and 44 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Cogent Communications, LLC (AS174), and Level 3 Parent, LLC (AS3356). AS9145 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 7:01 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 91.96.0.1

The trace goes to 91.96.0.1, the first address of 91.96.0.0/15. 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 (54 prefixes)

PrefixAddresses
31.150.0.0/1665,536
31.184.16.0/204,096
31.184.32.0/204,096
31.184.48.0/204,096
31.187.112.0/204,096
37.138.0.0/1665,536
80.66.0.0/198,192
80.69.112.0/204,096
80.228.0.0/1665,536
82.149.160.0/198,192
85.8.64.0/1816,384
85.16.0.0/1665,536
87.245.0.0/1816,384
89.166.128.0/1732,768
89.233.64.0/198,192
90.153.0.0/1732,768
91.96.0.0/15131,072
91.211.40.0/221,024
91.248.0.0/15131,072
92.252.0.0/1732,768
95.33.0.0/1665,536
149.243.242.0/23512
178.142.0.0/1665,536
185.60.0.0/23512
185.60.1.0/24256
185.165.136.0/23512
185.165.138.0/23512
185.237.184.0/24256
185.240.4.0/221,024
188.118.128.0/1816,384
193.16.80.0/204,096
193.30.64.0/23512
193.30.66.0/24256
193.30.67.0/24256
193.30.68.0/221,024
193.30.72.0/221,024
193.30.76.0/23512
193.30.78.0/23512
193.39.115.0/24256
193.96.240.0/24256
193.101.250.0/24256
193.169.174.0/24256
194.0.216.0/24256
194.15.185.0/24256
194.31.70.0/23512
194.31.94.0/23512
194.113.250.0/23512
194.127.103.0/24256
212.6.64.0/1816,384
212.95.96.0/198,192
213.168.192.0/198,192
213.170.160.0/198,192
213.182.96.0/198,192
213.183.160.0/198,192

IPv6 prefixes (7 prefixes)

Prefix
2001:678:c4::/48
2a00:1470::/32
2a02:1060::/48
2a02:8020::/30
2a02:8200::/27
2a03:1e01::/32
2a09:f880::/29

Neighbours

Upstreams (transit or peers) (90)

ASNetworkVisibility
AS1299Arelion Sweden AB1,705
AS174Cogent Communications, LLC1,318
AS3356Level 3 Parent, LLC900
AS6939Hurricane Electric LLC761
AS3320Deutsche Telekom AG171
AS34019Hivane Association165
AS25091IP-Max SA147
AS5405Inter.link GmbH136
AS8298IPng Networks GmbH122
AS34549meerfarbig GmbH & Co. KG121
AS48362Stadtwerke Feldkirch121
AS13030Init7 (Switzerland) Ltd.118
AS33891Core-Backbone GmbH108
AS6461Zayo Bandwidth103
AS12389PJSC Rostelecom101
AS8455atom86 BV100
AS34927iFog GmbH93
AS34177Celeste SAS91
AS50304Blix Solutions AS91
AS14840BR.Digital Telecom86
AS37497Network Platforms (PTY) LTD86
AS41327Fiber Telecom S.p.A.86
AS29691Nine Internet Solutions AG85
AS49434FBW NETWORKS SAS85
AS3935131173 Services AB84
AS9002RETN Limited83
AS12779IT.Gate S.p.A.83
AS20764CJSC RASCOM82
AS24961WIIT AG78
AS8218Zayo Infrastructure France SA70

The 30 most visible of 90.

Downstreams (customers) (44)

ASNetworkVisibility
AS34372VegaSystems GmbH & Co. KG990
AS12460mandala IT GmbH725
AS9099Finanz Informatik GmbH & Co. KG628
AS13282Finanz Informatik GmbH & Co. KG528
AS12371avency GmbH439
AS49651ENERCON GmbH438
AS211784BEIT GmbH399
AS51598Nehlsen AG396
AS211161JustBolt JustBolt GmbH396
AS49494CEWE Stiftung & Co. KGaA395
AS203196-395
AS21032-389
AS200931-378
AS206761-359
AS50621-357
AS31438-326
AS9066-313
AS15790-298
AS207289-280
AS6687-270
AS49957-270
AS62291-264
AS197803-263
AS30742-255
AS202238-254
AS200146-245
AS216152-242
AS34256Betriebsgesellschaft Freizeit- und Sportzentrum Halberstadt mbH234
AS204147-225
AS15779-221

The 30 most visible of 44.

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.