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AS43278Castles LLC

RussiaRegistryRIPE NCC

As of 10th November 2026, AS43278 (Castles LLC), a network registered in Russia with RIPE NCC, originates 24 IPv4 prefixes covering 6.1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 14,157th-largest of the 80,733 networks we see originating IPv4, and the 834th-largest of 4,982 in Russia. It is seen behind 14 upstream networks, most often AS59796 (StormWall s.r.o.) and AS43298 (Storm Networks LLC), and in front of 8 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 32% of its routes reach at least 90% of full-feed peers, and 14 prefixes are also originated by another network.

At a glance

IPv4 prefixes

24

IPv6 prefixes

1

IPv4 addresses

6.1k

IPv6 /64s

65.5k

Upstream graph

The networks AS43278 is seen behind, one and two hops out, drawn from real AS paths.

AS43278Toward the internet core
Upstream graph for AS43278: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS43278Castles LLCThis networkAS35598INETCOM CARRIER L…AS43298Storm Networks LLCAS57304RETN RussiaAS57494Adman LLCAS59796StormWall s.r.o.AS6939Hurricane Electri…AS20485JSC TransTeleComAS20764CJSC RASCOMAS3216PJSC VimpelcomAS9002RETN LimitedAS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS43278 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

79

adjacent networks

Upstreams
1418%
Peers
5772%
Downstreams
810%

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

Upstreams of AS43278
NetworkCountryRelationshipPathsVantage pts
AS59796StormWall s.r.o.SKPeer62069
AS43298Storm Networks LLCRUPeer39776
AS35598INETCOM CARRIER LLCRUPeer24897
AS57304RETN RussiaRUPeer21632
AS57494Adman LLCRUPeer12076
AS25091IP-Max SACHPeer332
AS31500Global Network Management IncAGPeer3131
AS32590Valve CorporationUSPeer261
AS202984Team-Host (Chernyshov Aleksandr Aleksandrovich)RUPeer2525
AS62255BiMajLink d.o.o.SIPeer1312

Prefixes

The largest blocks AS43278 originates, widest first.

Largest prefixes originated by AS43278
PrefixAddressesVisibility
5.42.211.0/2425632/76
37.44.199.0/242563/76
45.129.237.0/2425676/76
45.137.154.0/2425676/76
80.242.59.0/2425632/76
91.192.93.0/2425632/76
91.220.80.0/2425676/76
91.241.180.0/242563/76
95.181.158.0/2425676/76
152.89.199.0/2425642/76

Routing health

How AS43278'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%25
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more32.0%8
  • Partially propagated40% to 90%36.0%9
  • Seen by few peersUnder 40%32.0%8

Prefix sizes

IPv4 — 24 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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