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Autonomous System

AS39704 ยท CJ2 Hosting B.V.

Overview

AS39704 is announced on the Internet: RIPE RIS route collectors currently see 15 IPv4 prefixes and 4 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 19,968 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 64 upstream neighbours (transit providers or peers) and 13 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), Cogent Communications, LLC (AS174), and LibertyGlobal Liberty Global Europe Holding B.V. (AS6830). AS39704 was assigned by RIPE NCC, and its registration country is Netherlands.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 3:50 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 213.132.192.1, the first address of 213.132.192.0/19. 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 (15 prefixes)

PrefixAddresses
5.22.248.0/212,048
46.182.216.0/212,048
91.192.36.0/221,024
91.208.60.0/24256
94.124.88.0/212,048
185.94.168.0/221,024
185.103.16.0/221,024
185.146.216.0/23512
185.146.218.0/23512
193.222.137.0/24256
194.13.66.0/24256
194.50.163.0/24256
194.69.204.0/24256
195.216.246.0/24256
213.132.192.0/198,192

IPv6 prefixes (4 prefixes)

Prefix
2001:67c:f14::/48
2a00:1bd0::/29
2a07:52c0::/32
2a07:52c2::/32

Neighbours

Upstreams (transit or peers) (64)

ASNetworkVisibility
AS6939Hurricane Electric LLC1,340
AS174Cogent Communications, LLC755
AS6830LibertyGlobal Liberty Global Europe Holding B.V.323
AS25091IP-Max SA41
AS33891Core-Backbone GmbH35
AS20485Joint Stock Company TransTeleCom34
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC30
AS5405Inter.link GmbH25
AS37468Angola Cables24
AS8218Zayo Infrastructure France SA20
AS8298IPng Networks GmbH20
AS3935131173 Services AB20
AS49434FBW NETWORKS SAS20
AS37100SEACOM Limited18
AS39686Eurofiber Nederland BV18
AS14840BR.Digital Telecom16
AS3214xTom GmbH14
AS34019Hivane Association14
AS50673Serverius Holding B.V.14
AS4657StarHub Ltd13
AS29075IELO-LIAZO SERVICES SAS13
AS29632Netassist International EOOD13
AS42708Glesys AB12
AS56911Warian S.R.L.12
AS6696VERIXI SA11
AS209090Association Stolon10
AS6204INTERKVM HOST SRL9
AS6663Euroweb Romania S.R.L.9
AS7713PT Telekomunikasi Indonesia9
AS12552GlobalConnect AB8

The 30 most visible of 64.

Downstreams (customers) (13)

ASNetworkVisibility
AS202315Arcus IT Managed Services B.V.467
AS198508Plusine Systems B.V.465
AS48501Init3 BV463
AS48812Office IT B.V.264
AS41037Meta Micro Automatisering B.V.263
AS42152VCD Infra Solutions B.V.263
AS210882tizu Tim Zuidema trading as TiZu249
AS215914NetGrid Holding B.V.183
AS204751MobielWerkt B.V.152
AS209495Stichting RTV Noord98
AS41038-91
AS44439-14
AS41153-11

71 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.