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Autonomous System

AS50263 · A-Systems Sp. z o.o.

Overview

AS50263 is announced on the Internet: RIPE RIS route collectors currently see 1 IPv4 prefix and no IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 256 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 85 upstream neighbours (transit providers or peers) and 165 downstream neighbours (customers or networks it carries). Its most visible upstreams are GTT Communications Inc. (AS3257), Netassist International EOOD (AS29632), and EUROLINE UKRAINE LLC (AS60159). AS50263 was assigned by RIPE NCC, and its registration country is Poland.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:05 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 185.239.27.1

The trace goes to 185.239.27.1, the first address of 185.239.27.0/24. 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 (1 prefix)

PrefixAddresses
185.239.27.0/24256

IPv6 prefixes (none)

None currently seen.

Neighbours

Upstreams (transit or peers) (85)

ASNetworkVisibility
AS3257GTT Communications Inc.3,482
AS29632Netassist International EOOD2,052
AS60159EUROLINE UKRAINE LLC1,583
AS1267WIND TRE S.P.A.1,045
AS58299Openfactory GmbH927
AS1103SURF B.V.884
AS15958CETIN Ltd. Belgrade870
AS25091IP-Max SA858
AS12637SEEWEB s.r.l.802
AS34019Hivane Association802
AS34177Celeste SAS760
AS57118CommunityRack.org Verein732
AS8298IPng Networks GmbH673
AS37497Network Platforms (PTY) LTD672
AS47147Anexia Cloud Solutions GmbH585
AS37468Angola Cables460
AS401753BIXCE Inc460
AS55850-446
AS48362-445
AS35280F5 Networks SARL437
AS24961WIIT AG423
AS3935131173 Services AB423
AS6797GlobalConnect AB372
AS12779IT.Gate S.p.A.358
AS6461Zayo Bandwidth357
AS201054Stowarzyszenie e-Poludnie331
AS5405Inter.link GmbH313
AS41327Fiber Telecom S.p.A.273
AS6939Hurricane Electric LLC270
AS61049-257

The 30 most visible of 85.

Downstreams (customers) (165)

ASNetworkVisibility
AS12741Netia SA5,895
AS3255LLC EKSINTECH3,203
AS20804Exatel S.A.2,893
AS201814Mevspace MEVSPACE sp. z o.o.2,163
AS12963"SCIENTIFIC-INDUSTRIAL FIRM "VOLZ" LIMITED LIABILITY COMPANY1,822
AS29119AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL1,812
AS49559A-Systems Sp. z o.o.1,788
AS50629LWLcom GmbH1,709
AS15935ha-vel internet s.r.o.1,623
AS62206Pitline Ltd1,588
AS64289Macarne.com1,520
AS6849JSC "Ukrtelecom"1,361
AS49824-1,219
AS48729-1,077
AS62000SERVERD SAS992
AS41033-951
AS48648K-Link LLC849
AS214762-841
AS42739Hawe Telekom S.A.818
AS49434FBW NETWORKS SAS804
AS51202NUXOA GmbH733
AS43668-731
AS43139Maximum-Net LLC702
AS30823-669
AS60159EUROLINE UKRAINE LLC654
AS49743FINEMEDIA SPOLKA JAWNA WOJCIECH WRONA, GRZEGORZ KALUZA621
AS202520SkyPass Solutions Sp. z o.o.596
AS39608Lanet Network Ltd586
AS56899-518
AS214379-515

The 30 most visible of 165.

169 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.