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Autonomous System

AS15965 ยท CEGECOM S.A.

Overview

AS15965 is announced on the Internet: RIPE RIS route collectors currently see 8 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 22,016 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 53 upstream neighbours (transit providers or peers) and 13 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Level 3 Parent, LLC (AS3356), and Cogent Communications, LLC (AS174). AS15965 was assigned by RIPE NCC, and its registration country is Luxembourg.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:53 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 195.43.96.1, the first address of 195.43.96.0/19. 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 (8 prefixes)

PrefixAddresses
78.111.136.0/24256
80.64.144.0/204,096
193.91.32.0/204,096
193.168.62.0/23512
194.48.193.0/24256
194.48.252.0/23512
195.43.96.0/198,192
217.31.64.0/204,096

IPv6 prefixes (1 prefix)

Prefix
2a02:3a8::/32

Neighbours

Upstreams (transit or peers) (53)

ASNetworkVisibility
AS6939Hurricane Electric LLC654
AS3356Level 3 Parent, LLC369
AS174Cogent Communications, LLC174
AS1299Arelion Sweden AB154
AS34549meerfarbig GmbH & Co. KG32
AS34927iFog GmbH28
AS5405Inter.link GmbH22
AS25091IP-Max SA22
AS20485Joint Stock Company TransTeleCom20
AS14840BR.Digital Telecom19
AS8455atom86 BV18
AS12779IT.Gate S.p.A.18
AS29691Nine Internet Solutions AG18
AS34019Hivane Association18
AS4230CLARO S.A.16
AS34177Celeste SAS15
AS9002RETN Limited14
AS24961WIIT AG14
AS29075IELO-LIAZO SERVICES SAS14
AS41327Fiber Telecom S.p.A.14
AS48362Stadtwerke Feldkirch14
AS8218Zayo Infrastructure France SA13
AS8298IPng Networks GmbH12
AS12859BIT BV12
AS20764CJSC RASCOM12
AS56911Warian S.R.L.12
AS8758Iway AG11
AS29632Netassist International EOOD11
AS6758Monaco Telecom S.A.10
AS212024-10

The 30 most visible of 53.

Downstreams (customers) (13)

ASNetworkVisibility
AS214004Deloitte General Services sarl407
AS201043emmatech Emma Technologies Sarl297
AS47944Chambre des Deputes Luxembourg175
AS60288EurobaseGmbH Eurobase GmbH154
AS61415M&M GMbH154
AS198095ebrc POST Telecom S.A.153
AS201740SODRU S.A.151
AS38927Net-Build GmbH131
AS201441European Investment Bank130
AS28756European Patent Organisation118
AS203398-87
AS25094-39
AS51137-10

78 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.