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Autonomous System

AS12586 · GHOSTnet GmbH

Overview

AS12586 is announced on the Internet: RIPE RIS route collectors currently see 474 IPv4 prefixes and 8 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 208,896 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 13 upstream neighbours (transit providers or peers) and 29 downstream neighbours (customers or networks it carries). Its most visible upstreams are GTT Communications Inc. (AS3257), Hurricane Electric LLC (AS6939), and Deutsche Telekom AG (AS3320). AS12586 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:58 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 5.230.0.1, the first address of 5.230.0.0/15. 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 (474 prefixes)

PrefixAddresses
5.83.130.0/24256
5.83.139.0/24256
5.83.156.0/24256
5.83.157.0/24256
5.175.129.0/24256
5.175.130.0/24256
5.175.131.0/24256
5.175.133.0/24256
5.175.138.0/24256
5.175.163.0/24256
5.175.193.0/24256
5.175.196.0/24256
5.175.197.0/24256
5.175.198.0/24256
5.175.199.0/24256
5.175.200.0/24256
5.175.202.0/24256
5.175.205.0/24256
5.175.207.0/24256
5.175.208.0/24256
5.175.228.0/24256
5.175.230.0/24256
5.175.231.0/24256
5.175.232.0/24256
5.175.235.0/24256
5.175.240.0/24256
5.175.241.0/24256
5.175.242.0/24256
5.175.243.0/24256
5.175.244.0/24256
5.175.251.0/24256
5.175.252.0/24256
5.175.253.0/24256
5.175.254.0/24256
5.175.255.0/24256
5.230.0.0/15131,072
5.230.0.0/24256
5.230.1.0/24256
5.230.2.0/24256
5.230.3.0/24256
5.230.4.0/24256
5.230.6.0/24256
5.230.7.0/24256
5.230.8.0/24256
5.230.10.0/24256
5.230.11.0/24256
5.230.12.0/24256
5.230.13.0/24256
5.230.14.0/24256
5.230.15.0/24256
5.230.18.0/24256
5.230.19.0/24256
5.230.21.0/24256
5.230.22.0/24256
5.230.23.0/24256
5.230.24.0/24256
5.230.25.0/24256
5.230.26.0/24256
5.230.27.0/24256
5.230.28.0/24256
5.230.29.0/24256
5.230.30.0/24256
5.230.31.0/24256
5.230.32.0/24256
5.230.33.0/24256
5.230.34.0/24256
5.230.35.0/24256
5.230.36.0/24256
5.230.37.0/24256
5.230.38.0/24256
5.230.39.0/24256
5.230.40.0/24256
5.230.41.0/24256
5.230.42.0/24256
5.230.43.0/24256
5.230.44.0/24256
5.230.45.0/24256
5.230.46.0/24256
5.230.47.0/24256
5.230.48.0/24256
5.230.51.0/24256
5.230.52.0/24256
5.230.53.0/24256
5.230.54.0/24256
5.230.55.0/24256
5.230.56.0/24256
5.230.57.0/24256
5.230.58.0/24256
5.230.59.0/24256
5.230.60.0/24256
5.230.61.0/24256
5.230.62.0/24256
5.230.63.0/24256
5.230.64.0/24256
5.230.65.0/24256
5.230.66.0/24256
5.230.67.0/24256
5.230.68.0/24256
5.230.69.0/24256
5.230.70.0/24256

Showing the first 100 of 474, in address order. Complete list on RIPEstat

IPv6 prefixes (8 prefixes)

Prefix
2a00:12d8::/29
2a00:19d0::/29
2a00:cdc0::/32
2a01:bd40::/29
2a02:7a0::/29
2a02:2fc0::/29
2a02:2fc0:1b::/48
2a0f:3000::/29

Neighbours

Upstreams (transit or peers) (13)

ASNetworkVisibility
AS3257GTT Communications Inc.1,874
AS6939Hurricane Electric LLC1,178
AS3320Deutsche Telekom AG425
AS62904Eonix Corporation311
AS3223Voxility LLP287
AS20764CJSC RASCOM264
AS25091IP-Max SA54
AS8298IPng Networks GmbH23
AS14840BR.Digital Telecom17
AS22356Durand do Brasil Ltda15
AS286GTT Communications Inc.14
AS212508Lowhosting services of Davide Gennari7
AS263444Open X Tecnologia Ltda1

Downstreams (customers) (29)

ASNetworkVisibility
AS3257GTT Communications Inc.99,164
AS57433intercolo GmbH409
AS34899GHOSTnet GmbH267
AS197549GHOSTnet GmbH267
AS49476JSC Multiregional Transittelecom262
AS205680Travel Communication SIA261
AS211103BUNGATEL Pte. Ltd.258
AS44496Yves Poirier250
AS59592intercolo GmbH241
AS61430Marc Milde238
AS49296-206
AS57821-197
AS3320Deutsche Telekom AG125
AS51058-84
AS197071-55
AS13335Cloudflare, Inc.53
AS34764-40
AS42596-28
AS39119-25
AS51699-25
AS15169Google LLC22
AS47194-22
AS31572-17
AS29551-13
AS31025GHOSTnet GmbH8
AS13101TNG Stadtnetz GmbH1
AS57883-1
AS200275-1
AS209022Tschajera Limited1

11 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.