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Autonomous System

AS5394 ยท Unidata UNIDATA S.p.A.

Overview

AS5394 is announced on the Internet: RIPE RIS route collectors currently see 18 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 91,904 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 23 upstream neighbours (transit providers or peers) and 7 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), Hurricane Electric LLC (AS6939), and GTT Communications Inc. (AS3257). AS5394 was assigned by RIPE NCC, and its registration country is Italy.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 5:44 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 195.94.128.1, the first address of 195.94.128.0/18. 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 (18 prefixes)

PrefixAddresses
77.39.160.0/198,192
77.39.224.0/198,192
81.29.180.0/221,024
81.29.184.0/212,048
82.145.104.0/212,048
82.145.112.0/204,096
82.192.120.0/212,048
91.213.153.0/24256
193.109.112.0/24256
194.20.96.0/212,048
194.79.192.0/198,192
194.145.231.0/24256
194.183.0.0/198,192
194.183.16.0/24256
195.94.128.0/1816,384
195.250.224.0/198,192
213.233.0.0/1816,384
217.72.96.0/204,096

IPv6 prefixes (1 prefix)

Prefix
2a02:688::/32

Neighbours

Upstreams (transit or peers) (23)

ASNetworkVisibility
AS1299Arelion Sweden AB87,337
AS6939Hurricane Electric LLC45,421
AS3257GTT Communications Inc.14,686
AS8220COLT Technology Services Group Limited1,821
AS137409GSL Networks Pty LTD1,302
AS5405Inter.link GmbH1,166
AS13030Init7 (Switzerland) Ltd.313
AS34971CDLAN SpA271
AS8218Zayo Infrastructure France SA230
AS24961WIIT AG152
AS25091IP-Max SA145
AS28716Retelit Digital Services S.p.A.110
AS4455IX Reach Ltd103
AS6204INTERKVM HOST SRL77
AS34019Hivane Association53
AS20766Association "Gitoyen"21
AS14840BR.Digital Telecom18
AS60171AFR-IX TELECOM S.A.17
AS9009M247 Europe SRL15
AS286GTT Communications Inc.11
AS3303Swisscom (Schweiz) AG6
AS29632Netassist International EOOD6
AS22356Durand do Brasil Ltda5

Downstreams (customers) (7)

ASNetworkVisibility
AS30848UNIDATA S.p.A.659
AS197835FUSOLAB APS E ASD362
AS199499Holy See - Vatican City State359
AS12533RMnet S.R.L.270
AS205636NewniX S.r.l.259
AS204118carscpa Centro Agroalimentare Roma C.A.R. S.c.p.A.253
AS57329Centro di Produzione Spa95

403 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.