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Autonomous System

AS13101 ยท TNG Stadtnetz GmbH

Overview

AS13101 is announced on the Internet: RIPE RIS route collectors currently see 33 IPv4 prefixes and 4 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 142,080 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 87 upstream neighbours (transit providers or peers) and 12 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Level 3 Parent, LLC (AS3356), and Hurricane Electric LLC (AS6939). AS13101 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:57 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 86.103.0.1, the first address of 86.103.0.0/16. 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 (33 prefixes)

PrefixAddresses
45.145.236.0/221,024
46.22.152.0/212,048
62.93.0.0/198,192
80.66.192.0/221,024
81.91.104.0/212,048
82.97.128.0/1816,384
86.103.0.0/1665,536
89.28.176.0/212,048
95.214.160.0/221,024
103.204.204.0/221,024
109.94.212.0/221,024
113.30.180.0/221,024
113.30.220.0/221,024
176.119.214.0/24256
185.118.20.0/221,024
185.119.72.0/221,024
185.152.144.0/221,024
185.181.128.0/221,024
185.230.196.0/24256
185.234.200.0/221,024
185.243.68.0/221,024
192.166.40.0/221,024
193.143.2.0/23512
193.143.6.0/23512
194.180.18.0/24256
199.175.220.0/221,024
202.71.144.0/212,048
206.168.72.0/212,048
207.22.56.0/212,048
213.158.96.0/198,192
213.178.64.0/198,192
217.26.232.0/212,048
217.70.192.0/204,096

IPv6 prefixes (4 prefixes)

Prefix
2001:678:a14::/48
2a00:12d0::/29
2a03:c140::/29
2a06:9040::/29

Neighbours

Upstreams (transit or peers) (87)

ASNetworkVisibility
AS1299Arelion Sweden AB398
AS3356Level 3 Parent, LLC384
AS6939Hurricane Electric LLC293
AS5405Inter.link GmbH138
AS6461Zayo Bandwidth41
AS13030Init7 (Switzerland) Ltd.40
AS34549meerfarbig GmbH & Co. KG33
AS3320Deutsche Telekom AG31
AS25091IP-Max SA29
AS34177Celeste SAS23
AS20485Joint Stock Company TransTeleCom22
AS37497Network Platforms (PTY) LTD21
AS8218Zayo Infrastructure France SA20
AS9002RETN Limited20
AS14840BR.Digital Telecom20
AS35625Eurofiber France SAS20
AS41327Fiber Telecom S.p.A.20
AS48362Stadtwerke Feldkirch20
AS8298IPng Networks GmbH19
AS29691Nine Internet Solutions AG19
AS20764-18
AS24961WIIT AG18
AS35280F5 Networks SARL18
AS3935131173 Services AB18
AS47147Anexia Cloud Solutions GmbH18
AS61049Exascale Ltd18
AS12779IT.Gate S.p.A.17
AS37468Angola Cables16
AS8455atom86 BV15
AS34019Hivane Association15

The 30 most visible of 87.

Downstreams (customers) (12)

ASNetworkVisibility
AS6735TNG Stadtnetz GmbH518
AS33846Dataport AoR371
AS198719zeroBS GmbH359
AS208988Buchholz Digital GmbH327
AS49756Der Schleswig Holsteinische Landtag263
AS215344connect2 GmbH249
AS29551Aixit GmbH225
AS8495INTERNET AG Global Network93
AS8687PPP Internetdienstleistungen GmbH51
AS25279Treml+Sturm Datentechnik GmbH48
AS51531-40
AS12731-2

95 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.