Skip to content

Autonomous System

AS15962 ยท Orange Slovensko a.s.

Overview

AS15962 is announced on the Internet: RIPE RIS route collectors currently see 16 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 261,120 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 18 upstream neighbours (transit providers or peers) and 9 downstream neighbours (customers or networks it carries). Its most visible upstreams are SWAN, a.s. (AS5578), Opentransit Orange S.A. (AS5511), and Orange Polska Spolka Akcyjna (AS5617). AS15962 was assigned by RIPE NCC, and its registration country is Slovakia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 5:03 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 178.143.0.1, the first address of 178.143.0.0/16. 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 (16 prefixes)

PrefixAddresses
5.178.48.0/204,096
78.141.64.0/1816,384
85.237.224.0/198,192
90.64.0.0/1732,768
90.64.128.0/1732,768
92.52.0.0/1816,384
92.180.192.0/1816,384
95.105.128.0/1732,768
109.230.0.0/1816,384
178.143.0.0/1665,536
185.50.212.0/221,024
193.193.170.0/24256
194.1.185.0/24256
195.3.168.0/221,024
195.78.44.0/23512
213.151.192.0/1816,384

IPv6 prefixes (1 prefix)

Prefix
2a01:c840::/28

Neighbours

Upstreams (transit or peers) (18)

ASNetworkVisibility
AS5578SWAN, a.s.1,109
AS5511Opentransit Orange S.A.497
AS5617Orange Polska Spolka Akcyjna356
AS6939Hurricane Electric LLC330
AS6461Zayo Bandwidth69
AS3303Swisscom (Schweiz) AG62
AS33891Core-Backbone GmbH30
AS20562Broadband Hosting B.V.24
AS14840BR.Digital Telecom18
AS41327Fiber Telecom S.p.A.18
AS24482SG.GS12
AS50629LWLcom GmbH12
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH9
AS6204INTERKVM HOST SRL9
AS6663Euroweb Romania S.R.L.9
AS8220COLT Technology Services Group Limited9
AS9498BHARTI Airtel Ltd.9
AS22356-2

Downstreams (customers) (9)

ASNetworkVisibility
AS50881ESET, spol. s r.o.629
AS21433AccentureFSSC Accenture UK Limited368
AS57566Wircom s.r.o.268
AS56356Andrex s.r.o.267
AS59548AXASOFT, a.s.267
AS204749MARTICO s.r.o.267
AS203933DataCentrum262
AS209250GlobalLogic Slovakia s.r.o.11
AS209251GlobalLogic Slovakia s.r.o.11

24 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.