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Autonomous System

AS205941 · Lungu Stefan Gabriel

Overview

AS205941 is announced on the Internet: RIPE RIS route collectors currently see 2 IPv4 prefixes and 14 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 512 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 51 upstream neighbours (transit providers or peers) and 26 downstream neighbours (customers or networks it carries). Its most visible upstreams are INTERKVM HOST SRL (AS6204), Jakub Krsa (AS214757), and ANDREW KRISTULI (AS210464). AS205941 was assigned by RIPE NCC, and its registration country is Romania.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 9:52 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 44.30.106.1

The trace goes to 44.30.106.1, the first address of 44.30.106.0/24. 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 (2 prefixes)

PrefixAddresses
44.30.106.0/24256
142.249.174.0/24256

IPv6 prefixes (14 prefixes)

Prefix
2602:f50c:c00::/48
2a0b:4e07:2f::/48
2a10:fa82::/32
2a10:fa82:f700::/40
2a10:fa82:fa00::/40
2a10:fa82:fc00::/40
2a10:fa82:fe00::/40
2a10:fa82:ff00::/40
2a13:c8c4::/36
2a13:c8c4:666::/48
2a13:c8c4:3000::/36
2a13:c8c4:f500::/40
2a14:6782:6::/48
2a14:7580:ff9e::/48

Neighbours

Upstreams (transit or peers) (51)

ASNetworkVisibility
AS6204INTERKVM HOST SRL2,285
AS214757Jakub Krsa1,371
AS210464ANDREW KRISTULI781
AS216456Dcent Investments BV657
AS6939Hurricane Electric LLC656
AS215114Stevan Durand--L'Hours t/a SLBCLOUD626
AS214762Sebastian Stefanek trading as MatHost.eu535
AS49600NEAR IP, S.L.499
AS11967Hop179 OU379
AS215362Promo Plus SRL256
AS60900-250
AS215030-93
AS213753interedge InterEdge B.V.90
AS399486-63
AS5405Inter.link GmbH46
AS8298IPng Networks GmbH46
AS25091IP-Max SA41
AS3935131173 Services AB38
AS24961WIIT AG32
AS1103SURF B.V.30
AS50629LWLcom GmbH27
AS29075IELO-LIAZO SERVICES SAS26
AS34019Hivane Association26
AS401753BIXCE Inc22
AS56584InterEdge B.V.16
AS61049Exascale Ltd12
AS9002RETN Limited7
AS34927iFog GmbH6
AS6696-5
AS215596-4

The 30 most visible of 51.

Downstreams (customers) (26)

ASNetworkVisibility
AS204464NextServ LLC2,032
AS210464ANDREW KRISTULI547
AS202934SINCITY HOSTING LLC537
AS197806Andrei Rys532
AS208824Pau Cab465
AS218569Viktor Nesmeianov448
AS214762Sebastian Stefanek trading as MatHost.eu396
AS402654LHS311
AS211281NEOHOST SRL275
AS206491BANATSYNC SRL274
AS199518-271
AS17290-223
AS215017-173
AS218995-156
AS219123-99
AS213975-86
AS197324-80
AS214976-75
AS214205-65
AS198364BANATSYNC SRL54
AS218750-43
AS203868-42
AS39753-40
AS201398-17
AS205305-6
AS112DNS-OARC3

55 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.