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Autonomous System

AS16024 · GELSEN-NET Kommunikationsgesellschaft mbH

Overview

AS16024 is announced on the Internet: RIPE RIS route collectors currently see 16 IPv4 prefixes and 9 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 16,640 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 55 upstream neighbours (transit providers or peers) and 6 downstream neighbours (customers or networks it carries). Its most visible upstreams are GLASFASER RUHR GmbH & Co. KG (AS12329), Vodafone GmbH (AS3209), and Link11 GmbH (AS34309). AS16024 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:59 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 149.232.16.1, the first address of 149.232.16.0/20. 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 (16 prefixes)

PrefixAddresses
46.28.32.0/212,048
149.232.16.0/204,096
149.232.184.0/221,024
149.232.190.0/23512
149.232.244.0/221,024
149.232.248.0/221,024
156.67.56.0/24256
156.67.57.0/24256
185.47.232.0/221,024
185.159.32.0/221,024
193.26.125.0/24256
217.70.160.0/204,096
217.70.161.0/24256
217.70.162.0/24256
217.70.167.0/24256
217.70.172.0/24256

IPv6 prefixes (9 prefixes)

Prefix
2001:67c:cd8::/48
2a02:1670::/32
2a02:1671::/32
2a02:1672::/32
2a02:1673::/32
2a02:1674::/32
2a02:1675::/32
2a02:1676::/32
2a02:1677::/32

Neighbours

Upstreams (transit or peers) (55)

ASNetworkVisibility
AS12329GLASFASER RUHR GmbH & Co. KG773
AS3209Vodafone GmbH409
AS34309Link11 GmbH329
AS15763DOKOM Gesellschaft fuer Telekommunikation mbH275
AS55002F5, Inc.111
AS6939Hurricane Electric LLC100
AS4230CLARO S.A.10
AS5405Inter.link GmbH10
AS34019Hivane Association9
AS35280F5 Networks SARL9
AS35625Eurofiber France SAS9
AS25091IP-Max SA7
AS8758Iway AG6
AS12779IT.Gate S.p.A.6
AS14840BR.Digital Telecom6
AS20485Joint Stock Company TransTeleCom6
AS20764CJSC RASCOM6
AS24961WIIT AG6
AS29691Nine Internet Solutions AG6
AS34177Celeste SAS6
AS37100SEACOM Limited6
AS3935131173 Services AB6
AS41327Fiber Telecom S.p.A.6
AS48362Stadtwerke Feldkirch6
AS29075IELO-LIAZO SERVICES SAS5
AS137409GSL Networks Pty LTD5
AS8218Zayo Infrastructure France SA4
AS8298IPng Networks GmbH4
AS34927iFog GmbH4
AS37468Angola Cables4

The 30 most visible of 55.

Downstreams (customers) (6)

ASNetworkVisibility
AS212587Gemeinsame Kommunale Datenzentrale Recklinghausen Zweckverband471
AS35227Hertener Stadtwerke GmbH347
AS12329GLASFASER RUHR GmbH & Co. KG117
AS15763DOKOM Gesellschaft fuer Telekommunikation mbH31
AS203593TeleMark Telekommunikationsgesellschaft Mark mbH18
AS12886LEW TelNet GmbH2

54 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.