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Autonomous System

AS15763 · DOKOM Gesellschaft fuer Telekommunikation mbH

Overview

AS15763 is announced on the Internet: RIPE RIS route collectors currently see 41 IPv4 prefixes and 4 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 92,160 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 69 upstream neighbours (transit providers or peers) and 17 downstream neighbours (customers or networks it carries). Its most visible upstreams are Level 3 Parent, LLC (AS3356), LWLcom GmbH (AS50629), and GLASFASER RUHR GmbH & Co. KG (AS12329). AS15763 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:23 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 85.22.0.1, the first address of 85.22.0.0/16. 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 (41 prefixes)

PrefixAddresses
85.22.0.0/1665,536
85.22.48.0/24256
85.22.50.0/24256
85.22.51.0/24256
85.22.52.0/24256
85.22.53.0/24256
85.22.54.0/24256
85.22.55.0/24256
85.22.58.0/24256
85.22.60.0/24256
85.22.64.0/24256
85.22.66.0/24256
85.22.74.0/24256
85.22.75.0/24256
85.22.76.0/24256
85.22.148.0/23512
85.22.156.0/24256
85.22.172.0/24256
149.232.0.0/204,096
149.232.32.0/204,096
156.67.58.0/24256
185.151.100.0/221,024
193.28.40.0/23512
195.138.36.0/24256
195.138.42.0/23512
195.138.44.0/221,024
195.138.48.0/221,024
195.138.52.0/24256
195.138.59.0/24256
195.253.8.0/212,048
195.253.16.0/221,024
195.253.21.0/24256
195.253.24.0/221,024
195.253.28.0/23512
195.253.30.0/24256
212.29.32.0/198,192
212.29.32.0/24256
212.29.33.0/24256
212.29.39.0/24256
212.29.40.0/24256
212.29.42.0/24256

IPv6 prefixes (4 prefixes)

Prefix
2a03:f580::/32
2a03:f580::/48
2a03:f580:1::/48
2a03:f580:2::/48

Neighbours

Upstreams (transit or peers) (69)

ASNetworkVisibility
AS3356Level 3 Parent, LLC1,636
AS50629LWLcom GmbH1,362
AS12329GLASFASER RUHR GmbH & Co. KG1,189
AS8391Knipp Medien und Kommunikation GmbH612
AS34309Link11 GmbH372
AS6939Hurricane Electric LLC143
AS34019Hivane Association33
AS16024GELSEN-NET Kommunikationsgesellschaft mbH31
AS25091IP-Max SA31
AS3935131173 Services AB28
AS34177Celeste SAS27
AS14840BR.Digital Telecom26
AS24961WIIT AG26
AS35280F5 Networks SARL26
AS48362Stadtwerke Feldkirch26
AS5405Inter.link GmbH25
AS20764CJSC RASCOM25
AS20485Joint Stock Company TransTeleCom24
AS35625-23
AS37100SEACOM Limited23
AS4230CLARO S.A.22
AS8298IPng Networks GmbH19
AS12779IT.Gate S.p.A.19
AS29691Nine Internet Solutions AG19
AS34927iFog GmbH19
AS37468Angola Cables19
AS41327Fiber Telecom S.p.A.19
AS8218Zayo Infrastructure France SA18
AS29075IELO-LIAZO SERVICES SAS17
AS34549meerfarbig GmbH & Co. KG16

The 30 most visible of 69.

Downstreams (customers) (17)

ASNetworkVisibility
AS12329GLASFASER RUHR GmbH & Co. KG1,105
AS213731Westfalen-Informatik AG541
AS210437sdis Sonepar Deutschland Information Services GmbH464
AS203593TeleMark Telekommunikationsgesellschaft Mark mbH387
AS43455Schlueter-Systems KG364
AS41585ELEMENTMEDIA GmbH318
AS15486Materna Information & Communications SE307
AS34722rku.it GmbH294
AS200931lumberg Lumberg Connect GmbH289
AS42691DAVASO GmbH279
AS16024GELSEN-NET Kommunikationsgesellschaft mbH275
AS58149-234
AS205080-232
AS206341-227
AS49161-223
AS56919-59
AS8391-14

68 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.