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Autonomous System

AS49581 · Ferdinand Zink trading as Tube-Hosting

Overview

AS49581 is announced on the Internet: RIPE RIS route collectors currently see 39 IPv4 prefixes and 3 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 9,984 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 62 upstream neighbours (transit providers or peers) and 94 downstream neighbours (customers or networks it carries). Its most visible upstreams are SkyLink SkyLink Data Center BV (AS44592), Hurricane Electric LLC (AS6939), and GTT Communications Inc. (AS3257). AS49581 was assigned by RIPE NCC, and its registration country is Germany.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:54 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 2.58.113.1, the first address of 2.58.113.0/24. 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 (39 prefixes)

PrefixAddresses
2.58.113.0/24256
5.83.153.0/24256
5.230.154.0/24256
5.231.242.0/24256
5.253.246.0/24256
31.58.182.0/24256
37.221.92.0/24256
37.221.94.0/24256
45.13.227.0/24256
45.84.198.0/24256
45.131.108.0/24256
45.131.111.0/24256
45.137.98.0/24256
45.137.203.0/24256
45.142.107.0/24256
77.90.24.0/24256
77.90.48.0/24256
80.75.212.0/24256
80.91.223.0/24256
87.232.112.0/24256
89.106.71.0/24256
89.144.50.0/24256
91.212.121.0/24256
92.118.207.0/24256
94.249.149.0/24256
94.249.230.0/24256
94.249.246.0/24256
104.224.45.0/24256
141.11.243.0/24256
144.225.48.0/24256
146.19.191.0/24256
176.97.210.0/24256
185.84.156.0/24256
185.91.127.0/24256
185.117.3.0/24256
193.111.248.0/24256
193.111.249.0/24256
193.111.250.0/24256
193.141.60.0/24256

IPv6 prefixes (3 prefixes)

Prefix
2a12:b200::/29
2a12:bec4:152c::/48
2a12:de40::/32

Neighbours

Upstreams (transit or peers) (62)

ASNetworkVisibility
AS44592SkyLink SkyLink Data Center BV35,352
AS6939Hurricane Electric LLC11,757
AS3257GTT Communications Inc.1,892
AS6453TATA COMMUNICATIONS (AMERICA) INC1,538
AS5405Inter.link GmbH389
AS25091IP-Max SA389
AS34019Hivane Association360
AS13030Init7 (Switzerland) Ltd.356
AS62403PletX GmbH341
AS3935131173 Services AB260
AS1103SURF B.V.235
AS24961WIIT AG215
AS61049Exascale Ltd211
AS14840BR.Digital Telecom206
AS29632Netassist International EOOD203
AS34927iFog GmbH201
AS29075IELO-LIAZO SERVICES SAS151
AS41327-136
AS50304Blix Solutions AS132
AS20326TeraSwitch Networks Inc.128
AS47692Nessus GmbH121
AS28917Fiord Networks, UAB115
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH110
AS3214xTom GmbH110
AS401753BIXCE Inc110
AS20766Association "Gitoyen"101
AS1031PEER 1031 LLC100
AS20764CJSC RASCOM97
AS49434FBW NETWORKS SAS90
AS8218Zayo Infrastructure France SA89

The 30 most visible of 62.

Downstreams (customers) (94)

ASNetworkVisibility
AS62403PletX GmbH6,861
AS214639TAKEHOST OU3,560
AS51396Pfcloud UG (haftungsbeschrankt)3,509
AS48014AlbHost Albanian Hosting SH.P.K.2,514
AS202413Pronkin Timofei2,136
AS214716WEYRO LTD1,303
AS211066Simon Mariacher1,210
AS49592Pipe Networks LTD1,114
AS199654Oxide Group Limited1,033
AS213915HOSTES LTD818
AS209874Tech Tide Portugal Unipessoal LDA777
AS215439-777
AS207567-766
AS215120-765
AS215365-688
AS200950-652
AS21606324fire GmbH612
AS209693-579
AS213790-537
AS218731-520
AS214339-517
AS216039-509
AS216416-509
AS399820-509
AS199742-508
AS213520-508
AS214481-507
AS207695dataflair Mario Kurz trading as LUME Solutions506
AS219269-506
AS219443-506

The 30 most visible of 94.

37 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.