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Autonomous System

AS1955 · KIFU (Governmental Info Tech Development Agency)

Overview

AS1955 is announced on the Internet: RIPE RIS route collectors currently see 10 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 395,776 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 14 upstream neighbours (transit providers or peers) and 7 downstream neighbours (customers or networks it carries). Its most visible upstreams are GEANT Vereniging (AS21320), Pro-M Zrt. (AS47169), and Arelion Sweden AB (AS1299). AS1955 was assigned by ARIN, and its registration country is Hungary.

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 193.224.0.1, the first address of 193.224.0.0/15. 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 (10 prefixes)

PrefixAddresses
146.110.0.0/1665,536
192.146.134.0/23512
192.160.172.0/24256
192.188.242.0/23512
192.188.244.0/221,024
192.190.173.0/24256
193.6.0.0/1665,536
193.224.0.0/15131,072
195.111.0.0/1665,536
195.199.0.0/1665,536

IPv6 prefixes (1 prefix)

Prefix
2001:738::/32

Neighbours

Upstreams (transit or peers) (14)

ASNetworkVisibility
AS21320GEANT Vereniging1,285
AS47169Pro-M Zrt.587
AS1299Arelion Sweden AB421
AS6939Hurricane Electric LLC299
AS3303Swisscom (Schweiz) AG105
AS20965GEANT Vereniging72
AS9002RETN Limited35
AS15576NTS workspace AG22
AS47692Nessus GmbH18
AS5400British Telecommunications Limited9
AS6663Euroweb Romania S.R.L.9
AS15958CETIN Ltd. Belgrade9
AS5483Magyar Telekom Plc.7
AS21215UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd6

Downstreams (customers) (7)

ASNetworkVisibility
AS13092Akademska mreza Republike Srbije - AMRES534
AS31581NISZ National Infocommunications Service Provider Private Limited521
AS2547Budapest University of Technology and Economics415
AS2012IDDQD-AS266
AS3314HUN-REN Wigner Research Centre for Physics265
AS6711University of Szeged265
AS35052ACONET3

2 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.