subnet.im

AS42927S-NET Sp. z o.o.

PolandRegistryRIPE NCCTypeEyeball

As of 28th September 2026, AS42927 (S-NET Sp. z o.o.), an access network registered in Poland with RIPE NCC, originates 34 IPv4 prefixes covering 15.1k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 8,457th-largest of the 79,544 networks we see originating IPv4, and the 108th-largest of 2,096 in Poland. It is seen behind 8 upstream networks, most often AS9002 (RETN Limited) and AS3356 (Lumen (Level 3)), and in front of 21 downstream networks. 95% of its announcements have 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

34

IPv6 prefixes

3

IPv4 addresses

15.1k

IPv6 /64s

21.5B

Upstream graph

The networks AS42927 is seen behind, one and two hops out, drawn from real AS paths.

AS42927Toward the internet core
Upstream graph for AS42927: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS42927S-NET Sp. z o.o.This networkAS3356Lumen (Level 3)AS6939Hurricane Electri…AS9002RETN LimitedAS24482SG.GSAS49544i3D.net B.VAS3549Lumen (fka. Globa…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS2914NTT America, Inc.AS51907Kanton ZugAS6453TATA Communicatio…AS38623Metfone (Viettel …

Networks observed one and two hops upstream of AS42927 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

67

adjacent networks

Upstreams
812%
Peers
3857%
Downstreams
2131%

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

Upstreams of AS42927
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer3,157135
AS3356Lumen (Level 3)USPeer2,27499
AS6939Hurricane Electric LLCUSPeer33013
AS49544i3D.net B.VNLPeer482
AS24482SG.GSSGPeer422
AS201054Stowarzyszenie e-PoludniePLPeer93
AS137409GSL Networks Pty LTDAUPeer11
AS5617Orange Polska Spolka AkcyjnaPLPeer11

Prefixes

All 37

The largest blocks AS42927 originates, widest first.

Largest prefixes originated by AS42927
PrefixAddressesVisibility
91.189.248.0/212k82/82
94.124.8.0/212k82/82
185.28.16.0/221k82/82
46.22.164.0/2351282/82
80.82.16.0/2351282/82
80.82.18.0/2351282/82
80.82.20.0/2351282/82
80.82.26.0/2351282/82
80.82.30.0/2351282/82
94.124.2.0/2351282/82

Routing health

How AS42927'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

  • Valid94.6%35
  • Invalid0.0%0
  • No ROA5.4%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%37
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 34 prefixes

IPv6 — 3 prefixes

  • /3017.2B × /6433.3%1
  • /324.3B × /6433.3%1
  • /4865.5k × /6433.3%1

Recent changes

Announcements that started or stopped since 29th Aug 2026.

No announcement by AS42927 started or stopped in this period.

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