subnet.im

AS52091Level-MSK Ltd.

RussiaRegistryRIPE NCCTypeCarrier

As of 27th September 2026, AS52091 (Level-MSK Ltd.), a transit carrier registered in Russia with RIPE NCC, originates 3 IPv4 prefixes covering 1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 35,818th-largest of the 79,523 networks we see originating IPv4, and the 1,974th-largest of 4,942 in Russia. It is seen behind 16 upstream networks, most often AS9002 (RETN Limited) and AS20764 (CJSC RASCOM), and in front of 5 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

3

IPv6 prefixes

1

IPv4 addresses

1k

IPv6 /64s

8.6B

Upstream graph

The networks AS52091 is seen behind, one and two hops out, drawn from real AS paths.

AS52091Toward the internet core
Upstream graph for AS52091: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS52091Level-MSK Ltd.This networkAS1299Arelion (fka. Tel…AS9002RETN LimitedAS20764CJSC RASCOMAS35598INETCOM CARRIER L…AS62255BiMajLink d.o.o.AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS6453TATA Communicatio…AS51907Kanton ZugAS3356Lumen (Level 3)AS3491PCCW Global (HK) …AS174Cogent Communicat…

Networks observed one and two hops upstream of AS52091 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

82

adjacent networks

Upstreams
1620%
Peers
6174%
Downstreams
56%

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

Upstreams of AS52091
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer3,95072
AS20764CJSC RASCOMRUPeer1,91332
AS1299Arelion (fka. Telia Carrier)SEPeer1,72529
AS62255BiMajLink d.o.o.SIPeer1,33220
AS35598INETCOM CARRIER LLCRUPeer93064
AS57304RETN RussiaRUPeer86827
AS25478iHome LLCRUPeer34714
AS50509Transroute.NetRUPeer2385
AS49544i3D.net B.VNLPeer1311
AS3170VeloxServ Communications LtdGBPeer432

Prefixes

The largest blocks AS52091 originates, widest first.

Largest prefixes originated by AS52091
PrefixAddressesVisibility
31.133.40.0/2351281/81
31.133.40.0/2425681/81
31.133.42.0/2425681/81
2a0d:df80::/318.6B × /6463/64

Routing health

How AS52091'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%4
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

IPv6 — 1 prefixes

  • /318.6B × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS52091 started or stopped in this period.

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