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Autonomous System

AS12611 · R-KOM Regensburger Telekommunikationsgesellschaft mbH

Overview

AS12611 is announced on the Internet: RIPE RIS route collectors currently see 16 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 57,856 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 54 upstream neighbours (transit providers or peers) and 9 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), R-KOM Regensburger Telekommunikationsgesellschaft mbH (AS60169), and Arelion Sweden AB (AS1299). AS12611 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:54 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 130.185.0.1, the first address of 130.185.0.0/18. 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 (16 prefixes)

PrefixAddresses
5.149.224.0/204,096
46.227.96.0/212,048
80.209.192.0/198,192
81.27.160.0/204,096
88.133.176.0/204,096
88.133.232.0/212,048
91.106.120.0/212,048
95.130.160.0/212,048
130.185.0.0/1816,384
185.119.92.0/221,024
193.23.119.0/24256
194.55.106.0/23512
194.150.226.0/23512
194.169.251.0/24256
212.77.160.0/198,192
217.74.0.0/212,048

IPv6 prefixes (1 prefix)

Prefix
2001:16e0::/29

Neighbours

Upstreams (transit or peers) (54)

ASNetworkVisibility
AS6939Hurricane Electric LLC1,851
AS60169R-KOM Regensburger Telekommunikationsgesellschaft mbH1,012
AS1299Arelion Sweden AB629
AS2914NTT America, Inc.414
AS34549meerfarbig GmbH & Co. KG46
AS34019Hivane Association41
AS4230CLARO S.A.39
AS29632Netassist International EOOD36
AS34927iFog GmbH36
AS14840BR.Digital Telecom34
AS20485Joint Stock Company TransTeleCom34
AS48362Stadtwerke Feldkirch31
AS3935131173 Services AB30
AS34177Celeste SAS29
AS8298IPng Networks GmbH26
AS25091IP-Max SA25
AS41327Fiber Telecom S.p.A.22
AS12779-20
AS35625Eurofiber France SAS20
AS29075IELO-LIAZO SERVICES SAS19
AS37468Angola Cables19
AS29691-18
AS35280F5 Networks SARL18
AS24961WIIT AG17
AS212024-17
AS8758Iway AG16
AS55850Mercury NZ Limited16
AS4455IX Reach Ltd15
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH14
AS6797GlobalConnect AB14

The 30 most visible of 54.

Downstreams (customers) (9)

ASNetworkVisibility
AS41307Telepark Passau GmbH1,249
AS20902DegNet GmbH1,147
AS13012Stefan Englhardt625
AS204796Krones AG456
AS209537Vying Technologies OU408
AS205033Stadt Regensburg364
AS25504Vautron Rechenzentrum AG315
AS200224DWE GmbH275
AS214014Stadt Straubing274

66 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.