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Autonomous System

AS35661 · VIRTUA SYSTEMS SAS

Overview

AS35661 is announced on the Internet: RIPE RIS route collectors currently see 29 IPv4 prefixes and 18 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 7,168 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 48 upstream neighbours (transit providers or peers) and 164 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Arelion Sweden AB (AS1299), and Cogent Communications, LLC (AS174). AS35661 was assigned by RIPE NCC, and its registration country is France.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 5:04 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 45.157.116.1, the first address of 45.157.116.0/22. 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 (29 prefixes)

PrefixAddresses
45.157.116.0/221,024
45.157.116.0/23512
45.157.116.0/24256
45.157.117.0/24256
45.157.118.0/23512
45.157.118.0/24256
45.157.119.0/24256
64.204.237.0/24256
77.67.9.0/24256
84.75.12.0/221,024
84.75.20.0/221,024
95.155.152.0/24256
150.241.243.0/24256
185.10.16.0/221,024
185.10.16.0/24256
185.10.17.0/24256
185.10.18.0/24256
185.10.19.0/24256
185.154.152.0/221,024
185.154.152.0/23512
185.154.152.0/24256
185.154.153.0/24256
185.154.154.0/23512
185.154.154.0/24256
185.154.155.0/24256
185.234.100.0/24256
188.214.24.0/24256
194.147.105.0/24256
194.147.109.0/24256

IPv6 prefixes (18 prefixes)

Prefix
2602:f72e:800::/37
2602:fa02:f00::/40
2a07:8dc0::/32
2a07:8dc1::/32
2a0d:e680::/32
2a0d:e680::/48
2a0d:e680:1::/48
2a0d:e680:10::/48
2a0d:e680:20::/48
2a0d:e680:30::/48
2a0d:e680:40::/48
2a0f:9400:738b::/48
2a10:fa80:7::/48
2a10:fa80:120::/44
2a13:9500:187::/48
2a14:7583:5a00::/40
2a14:7583:5a80::/41
2a14:7583:5ae0::/44

Neighbours

Upstreams (transit or peers) (48)

ASNetworkVisibility
AS6939Hurricane Electric LLC10,687
AS1299Arelion Sweden AB7,188
AS174Cogent Communications, LLC2,295
AS35133Eranium B.V.1,947
AS205794JINZE YANG278
AS9002RETN Limited185
AS25091IP-Max SA183
AS5405Inter.link GmbH137
AS39801France IX Services SASU125
AS33891Core-Backbone GmbH113
AS8298IPng Networks GmbH109
AS34927iFog GmbH107
AS49434FBW NETWORKS SAS105
AS3935131173 Services AB101
AS41327Fiber Telecom S.p.A.92
AS34177Celeste SAS91
AS44530HOPUS SAS86
AS12779IT.Gate S.p.A.85
AS34019Hivane Association70
AS29075IELO-LIAZO SERVICES SAS67
AS56911Warian S.R.L.67
AS20764CJSC RASCOM61
AS35280F5 Networks SARL61
AS6758Monaco Telecom S.A.58
AS8218Zayo Infrastructure France SA50
AS60171AFR-IX TELECOM S.A.48
AS30823-46
AS50629LWLcom GmbH44
AS4455IX Reach Ltd30
AS20562Broadband Hosting B.V.30

The 30 most visible of 48.

Downstreams (customers) (164)

ASNetworkVisibility
AS42394UPP Microcomponent LLC564
AS210809UniFlex UniFlex Systems Limited534
AS213607WORLD FIRST COMMUNICATION LTD502
AS215321Central City BV472
AS50201Impulso Srl460
AS202294Netlojik Bilgi Teknolojileri Sanayi ve Ticaret Limited Sirketi460
AS218833Portalix UG (haftungsbeschraenkt)456
AS208529Zidane Bouabsa441
AS206284BV THINK AGAIN439
AS50833FIBER TELECOM s.r.o.432
AS201633-431
AS213948-430
AS218654-429
AS61055-428
AS50142-427
AS35559-426
AS154924-400
AS30179-369
AS205220-348
AS401311-326
AS10779-299
AS264798Secretaria Legal y Tecnica288
AS58057-275
AS214731ETO Networks Limited274
AS197871-264
AS328611-262
AS215956-261
AS41589-259
AS200853-259
AS204443-258

The 30 most visible of 164.

90 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.