subnet.im

AS50263A-Systems Sp. z o.o.

PolandRegistryRIPE NCCTypeCarrier

As of 26th September 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 59,114th-largest of the 79,480 networks we see originating IPv4, and the 1,341st-largest of 2,095 in Poland. It is seen behind 38 upstream networks, most often AS132337 (Axclusive) and AS3257 (GTT Communications Inc.), and in front of 156 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 networkAS3257GTT Communication…AS7768Nuh Ahmet Firat t…AS18106Viewqwest Pte LtdAS23673Cogetel Online, C…AS132337AxclusiveAS6667Elisa OyjAS398465Rackdog LLCAS9121Turk TelekomAS44901Belcloud LTDAS215859Hetzner Cloud - S…AS6939Hurricane Electri…AS1299Arelion (fka. Tel…

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

525

adjacent networks

Upstreams
387%
Peers
33163%
Downstreams
15630%

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

Upstreams of AS50263
NetworkCountryRelationshipPathsVantage pts
AS132337AxclusiveSGPeer10,5302
AS3257GTT Communications Inc.USPeer5,249118
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer4,9232
AS18106Viewqwest Pte LtdSGPeer3,1204
AS23673Cogetel Online, Cambodia, ISPKHPeer2,1422
AS8298IPng Networks GmbHCHPeer1,8942
AS60159EUROLINE UKRAINE LLCUAPeer1,84954
AS25091IP-Max SACHPeer1,7403
AS39122Blacknight Internet Solutions LimitedIEPeer1,2902
AS38880Micron21 Datacentre Pty LtdAUPeer1,1512

Prefixes

The largest blocks AS50263 originates, widest first.

Largest prefixes originated by AS50263
PrefixAddressesVisibility
185.239.27.0/2425681/81

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 27th Aug 2026.

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