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Autonomous System

AS35133 ยท Eranium B.V.

Overview

AS35133 is announced on the Internet: RIPE RIS route collectors currently see 3 IPv4 prefixes and 5 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 768 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 24 upstream neighbours (transit providers or peers) and 54 downstream neighbours (customers or networks it carries). Its most visible upstreams are Hurricane Electric LLC (AS6939), LibertyGlobal Liberty Global Europe Holding B.V. (AS6830), and Arelion Sweden AB (AS1299). AS35133 was assigned by RIPE NCC, and its registration country is Netherlands.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:57 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 45.13.117.1, the first address of 45.13.117.0/24. 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 (3 prefixes)

PrefixAddresses
45.13.117.0/24256
77.73.114.0/24256
217.18.95.0/24256

IPv6 prefixes (5 prefixes)

Prefix
2a07:5500::/29
2a07:5506::/32
2a07:5507::/32
2a09:e240:22::/48
2a09:e244::/33

Neighbours

Upstreams (transit or peers) (24)

ASNetworkVisibility
AS6939Hurricane Electric LLC5,578
AS6830LibertyGlobal Liberty Global Europe Holding B.V.2,503
AS1299Arelion Sweden AB1,950
AS3356Level 3 Parent, LLC1,561
AS174Cogent Communications, LLC1,441
AS6762TELECOM ITALIA SPARKLE S.p.A.1,191
AS6453TATA COMMUNICATIONS (AMERICA) INC1,049
AS3257GTT Communications Inc.708
AS5511Opentransit Orange S.A.283
AS34927iFog GmbH113
AS20764CJSC RASCOM47
AS50629LWLcom GmbH44
AS49434FBW NETWORKS SAS43
AS50304Blix Solutions AS43
AS61049Exascale Ltd26
AS286GTT Communications Inc.24
AS24961WIIT AG23
AS41327Fiber Telecom S.p.A.22
AS34872Sarah Rossius trading as Servperso Systems12
AS6204INTERKVM HOST SRL11
AS56911Warian S.R.L.9
AS6663Euroweb Romania S.R.L.7
AS56655Gigahost AS3
AS1031PEER 1031 LLC2

Downstreams (customers) (54)

ASNetworkVisibility
AS35661VIRTUA SYSTEMS SAS1,947
AS211588Innovation Harbor B.V.1,258
AS208453Johan Karlsson trading as SweHosting1,097
AS34872Sarah Rossius trading as Servperso Systems1,071
AS149020WebHorizon Internet Services716
AS58061Scalaxy B.V.702
AS212762Casper Krook trading as Ck IT Solutions650
AS215085PixelHosting Maik Polman trading as PixelHosting628
AS35200TransitX Ltd581
AS57706Hybula B.V.490
AS210558-470
AS212253-467
AS136258-464
AS46824-427
AS212895Johannes Ernst424
AS52025ParadoxNetworks Limited421
AS49033-356
AS214809-318
AS931-282
AS211041-275
AS44733-271
AS1002-269
AS201949-244
AS207994-230
AS400799-226
AS50917Diederik Focko de Zee199
AS213842-161
AS44299-142
AS210501-141
AS39563CTA Systems B.V.138

The 30 most visible of 54.

13 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.