Skip to content

Autonomous System

AS39637 ยท ADES BV

Overview

AS39637 is announced on the Internet: RIPE RIS route collectors currently see 14 IPv4 prefixes and 3 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 10,240 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 36 upstream neighbours (transit providers or peers) and 20 downstream neighbours (customers or networks it carries). Its most visible upstreams are GSL Networks Pty LTD (AS137409), atom86 BV (AS8455), and Hurricane Electric LLC (AS6939). AS39637 was assigned by RIPE NCC, and its registration country is Netherlands.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 1:25 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 37.203.56.1, the first address of 37.203.56.0/21. 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 (14 prefixes)

PrefixAddresses
37.203.56.0/212,048
45.91.122.0/24256
45.136.111.0/24256
91.201.164.0/221,024
94.124.136.0/212,048
95.215.72.0/221,024
185.215.252.0/221,024
193.203.225.0/24256
193.203.226.0/24256
193.223.100.0/24256
194.42.122.0/23512
194.107.121.0/24256
195.72.122.0/23512
195.246.236.0/23512

IPv6 prefixes (3 prefixes)

Prefix
2001:678:11e8::/48
2a00:dc8::/32
2a13:9b40::/29

Neighbours

Upstreams (transit or peers) (36)

ASNetworkVisibility
AS137409GSL Networks Pty LTD3,269
AS8455atom86 BV496
AS6939Hurricane Electric LLC285
AS34019Hivane Association44
AS37497Network Platforms (PTY) LTD39
AS25091IP-Max SA34
AS8298IPng Networks GmbH31
AS35280F5 Networks SARL30
AS34177Celeste SAS25
AS47147Anexia Cloud Solutions GmbH23
AS5405Inter.link GmbH22
AS3935131173 Services AB22
AS24961WIIT AG19
AS29075IELO-LIAZO SERVICES SAS19
AS15802-18
AS37100SEACOM Limited18
AS3216PJSC "Vimpelcom"15
AS6204INTERKVM HOST SRL15
AS6663Euroweb Romania S.R.L.12
AS9044-12
AS30844Liquid Telecommunications Ltd12
AS58057Securebit AG12
AS6797GlobalConnect AB11
AS22356Durand do Brasil Ltda11
AS6777Amsterdam Internet Exchange B.V.10
AS15576-10
AS37468Angola Cables10
AS61049Exascale Ltd10
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH9
AS4455IX Reach Ltd9

The 30 most visible of 36.

Downstreams (customers) (20)

ASNetworkVisibility
AS206188Zeta Datacenters B.V.690
AS42812Internet B.V530
AS12595Onworx BV397
AS43190Totaalnet Internet Works B.V.296
AS202482iteeco Iteeco Cooperatie U.A.282
AS31584Akzo Nobel Nederland B.V.281
AS51030skyvision Skyvision Business Centre B.V.280
AS203037MicaIP Mica IT B.V.280
AS41887Prolocation B.V.264
AS208332hosting2go Hosting 2 GO B.V.255
AS34108-228
AS213233-197
AS207777-182
AS207627-167
AS209010-161
AS213822-147
AS206389-128
AS211550-127
AS210501-91
AS197731-41

73 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.