Autonomous System
AS42184 · TKRZ Stadtwerke GmbH
Overview
AS42184 is announced on the Internet: RIPE RIS route collectors currently see 13 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 18,688 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 60 upstream neighbours (transit providers or peers) and 12 downstream neighbours (customers or networks it carries). Its most visible upstreams are Core-Backbone GmbH (AS33891), Arelion Sweden AB (AS1299), and Cogent Communications, LLC (AS174). AS42184 was assigned by RIPE NCC, and its registration country is Germany.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 10:13 AM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 89.251.128.1, the first address of 89.251.128.0/20. 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 (13 prefixes)
| Prefix | Addresses |
|---|---|
| 45.82.124.0/22 | 1,024 |
| 88.218.84.0/22 | 1,024 |
| 89.251.128.0/20 | 4,096 |
| 91.190.224.0/21 | 2,048 |
| 178.251.8.0/21 | 2,048 |
| 185.64.168.0/22 | 1,024 |
| 185.72.200.0/22 | 1,024 |
| 185.124.232.0/22 | 1,024 |
| 185.143.168.0/22 | 1,024 |
| 185.153.140.0/22 | 1,024 |
| 188.64.248.0/21 | 2,048 |
| 194.15.152.0/22 | 1,024 |
| 194.49.22.0/24 | 256 |
IPv6 prefixes (1 prefix)
| Prefix |
|---|
| 2a02:f08::/32 |
Neighbours
Upstreams (transit or peers) (60)
| AS | Network | Visibility |
|---|---|---|
| AS33891 | Core-Backbone GmbH | 633 |
| AS1299 | Arelion Sweden AB | 395 |
| AS174 | Cogent Communications, LLC | 385 |
| AS6939 | Hurricane Electric LLC | 373 |
| AS3356 | Level 3 Parent, LLC | 335 |
| AS3320 | Deutsche Telekom AG | 110 |
| AS34549 | meerfarbig GmbH & Co. KG | 39 |
| AS13030 | Init7 (Switzerland) Ltd. | 35 |
| AS35625 | Eurofiber France SAS | 35 |
| AS34019 | Hivane Association | 31 |
| AS29632 | Netassist International EOOD | 30 |
| AS9002 | RETN Limited | 27 |
| AS12779 | IT.Gate S.p.A. | 26 |
| AS25091 | IP-Max SA | 26 |
| AS29691 | Nine Internet Solutions AG | 26 |
| AS34927 | iFog GmbH | 26 |
| AS6777 | - | 25 |
| AS14840 | BR.Digital Telecom | 25 |
| AS20764 | CJSC RASCOM | 25 |
| AS34177 | Celeste SAS | 25 |
| AS37497 | Network Platforms (PTY) LTD | 25 |
| AS48362 | Stadtwerke Feldkirch | 25 |
| AS61049 | Exascale Ltd | 25 |
| AS24961 | WIIT AG | 24 |
| AS39351 | 31173 Services AB | 24 |
| AS41327 | Fiber Telecom S.p.A. | 24 |
| AS5405 | Inter.link GmbH | 23 |
| AS8298 | IPng Networks GmbH | 23 |
| AS35280 | F5 Networks SARL | 23 |
| AS50673 | Serverius Holding B.V. | 23 |
The 30 most visible of 60.
Downstreams (customers) (12)
| AS | Network | Visibility |
|---|---|---|
| AS197759 | Enapter AG | 388 |
| AS210035 | Stiftung Mathias-Spital Rheine | 355 |
| AS8454 | FMO Flughafen Muenster/Osnabrueck GmbH | 353 |
| AS43397 | items management GmbH trading as 'items GmbH & Co. KG' | 353 |
| AS196932 | RheiNet GmbH | 353 |
| AS204702 | Deutsche Windtechnik GmbH & Co. KG | 353 |
| AS49552 | OpenSource Training Ralf Spenneberg | 352 |
| AS215756 | C. H. Schmitz Beteiligungsgesellschaft mbH trading as Schmitz-Werke GmbH & Co. KG | 352 |
| AS196731 | egeplast egeplast international GmbH | 351 |
| AS57137 | SIEVERS-SNC Beteiligungs GmbH | 283 |
| AS202208 | - | 217 |
| AS204989 | - | 59 |
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.