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Autonomous System

AS25255 · Hutchison Drei Austria GmbH

Overview

AS25255 is announced on the Internet: RIPE RIS route collectors currently see 47 IPv4 prefixes and 5 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 731,392 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 29 upstream neighbours (transit providers or peers) and 11 downstream neighbours (customers or networks it carries). Its most visible upstreams are Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH (AS1764), A1 Telekom Austria AG (AS8447), and myNet GmbH (AS31543). AS25255 was assigned by RIPE NCC, and its registration country is Austria.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:57 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 77.116.0.1, the first address of 77.116.0.0/14. 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 (47 prefixes)

PrefixAddresses
45.3.56.0/24256
46.220.0.0/1665,536
77.116.0.0/14262,144
77.116.0.0/1732,768
77.116.128.0/1732,768
77.117.0.0/1732,768
77.119.128.0/204,096
77.119.160.0/204,096
77.119.192.0/198,192
77.119.224.0/198,192
81.3.192.0/1816,384
81.3.192.0/24256
81.3.201.0/24256
81.3.206.0/23512
81.3.211.0/24256
91.141.0.0/1732,768
91.141.0.0/204,096
91.141.32.0/198,192
91.141.64.0/204,096
94.245.192.0/1816,384
94.245.192.0/24256
109.126.64.0/1816,384
151.5.88.0/221,024
151.5.88.0/23512
151.5.90.0/23512
151.5.92.0/221,024
151.5.92.0/24256
151.5.93.0/24256
151.5.94.0/24256
151.5.95.0/24256
178.112.0.0/14262,144
178.112.0.0/1732,768
178.112.128.0/1732,768
178.113.0.0/1732,768
178.115.32.0/198,192
178.115.64.0/204,096
178.115.128.0/204,096
178.115.224.0/198,192
178.165.128.0/1732,768
178.165.128.0/204,096
178.165.160.0/198,192
178.165.192.0/204,096
194.24.128.0/198,192
194.24.158.0/24256
194.24.159.0/24256
213.94.64.0/1816,384
213.94.76.0/24256

IPv6 prefixes (5 prefixes)

Prefix
2a02:2861::/32
2a02:2861:d::/48
2a02:2861:e::/48
2a02:2864::/30
2a07:7e82::/40

Neighbours

Upstreams (transit or peers) (29)

ASNetworkVisibility
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH5,823
AS8447A1 Telekom Austria AG3,218
AS31543myNet GmbH1,710
AS6939Hurricane Electric LLC397
AS53667FranTech Solutions268
AS3303Swisscom (Schweiz) AG124
AS5405Inter.link GmbH95
AS33891Core-Backbone GmbH74
AS14840BR.Digital Telecom55
AS41327Fiber Telecom S.p.A.54
AS13030Init7 (Switzerland) Ltd.53
AS9002RETN Limited41
AS50629LWLcom GmbH33
AS8220COLT Technology Services Group Limited29
AS47147Anexia Cloud Solutions GmbH29
AS6204INTERKVM HOST SRL28
AS9498BHARTI Airtel Ltd.23
AS6663Euroweb Romania S.R.L.22
AS48362Stadtwerke Feldkirch14
AS8218Zayo Infrastructure France SA9
AS22356Durand do Brasil Ltda8
AS1121IDDQD-AS5
AS15576NTS workspace AG4
AS1853ACOnet - ACONET2
AS9009M247 Europe SRL1
AS29208Quantcom, a.s.1
AS39120Convergenze S.p.A.1
AS44306Omonia OMONIA d.o.o.1
AS263444Open X Tecnologia Ltda1

Downstreams (customers) (11)

ASNetworkVisibility
AS8437Hutchison Drei Austria GmbH8,411
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH986
AS8447A1 Telekom Austria AG678
AS213080Oberoesterreichische Gesundheitsholding GmbH408
AS41491Stadtwerke Kapfenberg GmbH393
AS31543myNet GmbH339
AS12635Hutchison Drei Austria GmbH271
AS8220COLT Technology Services Group Limited36
AS35579KELAG-Karntner Elektrizitats - Aktiengesellschaft19
AS33891Core-Backbone GmbH7
AS19551Incapsula Inc1

14 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.