subnet.im

AS50263A-Systems Sp. z o.o.

PolandRegistryRIPE NCCTypeCarrier

As of 12th November 2026, AS50263 (A-Systems Sp. z o.o.), a transit carrier registered in Poland with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses. By IPv4 address space that makes it the 59,995th-largest of the 80,772 networks we see originating IPv4, and the 1,351st-largest of 2,109 in Poland. It is seen behind 23 upstream networks, most often AS2914 (NTT America, Inc.) and AS7768 (Nuh Ahmet Firat trading as TEKNET…), and in front of 147 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

256

IPv6 /64s

0

Upstream graph

The networks AS50263 is seen behind, one and two hops out, drawn from real AS paths.

AS50263Toward the internet core
Upstream graph for AS50263: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS50263A-Systems Sp. z o…This networkAS999CORIX NETWORKSAS2914NTT America, Inc.AS3257GTT Communication…AS7768Nuh Ahmet Firat t…AS25091IP-Max SAAS6939Hurricane Electri…AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS6667Elisa OyjAS398465Rackdog LLCAS4849S3 Company LtdAS9121Turk Telekom

Networks observed one and two hops upstream of AS50263 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

415

adjacent networks

Upstreams
236%
Peers
24559%
Downstreams
14735%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS50263
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer6,42198
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer4,9312
AS3257GTT Communications Inc.USPeer3,23363
AS999CORIX NETWORKSUSPeer2,8172
AS25091IP-Max SACHPeer1,5353
AS8298IPng Networks GmbHCHPeer1,3542
AS60159EUROLINE UKRAINE LLCUAPeer1,31651
AS12552GlobalConnect (IP-Only)SEPeer1,3071
AS39122Blacknight Internet Solutions LimitedIEPeer8921
AS201054Stowarzyszenie e-PoludniePLPeer5171

Prefixes

The largest blocks AS50263 originates, widest first.

Largest prefixes originated by AS50263
PrefixAddressesVisibility
185.239.27.0/2425678/78

Routing health

How AS50263's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid100.0%1
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%1
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

Recent changes

Announcements that started or stopped since 13th Oct 2026.

  • Withdrawn2a0c:d540::/3226th Oct 2026
  • Announced2a0c:d540::/3225th Oct 2026

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.