subnet.im

AS216129SEBEK sp. z o.o

PolandRegistryRIPE NCC

As of 27th September 2026, AS216129 (SEBEK sp. z o.o), a network registered in Poland with RIPE NCC, originates 22 IPv4 prefixes covering 5.6k addresses and 9 IPv6 prefixes. By IPv4 address space that makes it the 14,734th-largest of the 79,525 networks we see originating IPv4, and the 244th-largest of 2,096 in Poland. It is seen behind 8 upstream networks, most often AS60068 (Datacamp Limited (CDN77 / DataPacket)) and AS48729 (ServerKing B.V.), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 97% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

22

IPv6 prefixes

9

IPv4 addresses

5.6k

IPv6 /64s

4.3B

Upstream graph

The networks AS216129 is seen behind, one and two hops out, drawn from real AS paths.

AS216129Toward the internet core
Upstream graph for AS216129: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS216129SEBEK sp. z o.oThis networkAS48729ServerKing B.V.AS50979ROUTE 95 LLCAS59796StormWall s.r.o.AS60068Datacamp Limited …AS204957ROUTE 95 LLCAS50263A-Systems Sp. z o…AS57043HOSTKEY B.V.AS2914NTT America, Inc.AS33891Core-Backbone GmbHAS9002RETN LimitedAS174Cogent Communicat…AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS216129 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

19

adjacent networks

Upstreams
842%
Peers
1053%
Downstreams
15%

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

Upstreams of AS216129
NetworkCountryRelationshipPathsVantage pts
AS60068Datacamp Limited (CDN77 / DataPacket)GBPeer1,048145
AS48729ServerKing B.V.NLPeer385144
AS59796StormWall s.r.o.SKPeer24381
AS50979ROUTE 95 LLCUSPeer145145
AS204957ROUTE 95 LLCUSPeer145145
AS201814MEVSPACE sp. z o.o.PLPeer144144
AS44901Belcloud LTDBGPeer144144
AS52000MIRhosting B.V.NLPeer6262

Prefixes

All 31

The largest blocks AS216129 originates, widest first.

Largest prefixes originated by AS216129
PrefixAddressesVisibility
2.27.253.0/2425680/81
31.56.180.0/2425680/81
31.57.13.0/2425681/81
31.57.117.0/2425627/81
31.58.85.0/2425681/81
31.77.241.0/2425681/81
104.234.24.0/2425681/81
107.161.154.0/2425681/81
143.20.155.0/2425681/81
148.253.208.0/2425681/81

Routing health

How AS216129'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%31
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more96.8%30
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%3.2%1

Prefix sizes

IPv4 — 22 prefixes

IPv6 — 9 prefixes

  • /324.3B × /6411.1%1
  • /4865.5k × /6488.9%8

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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