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AS212128LLC "HORIZON"

RussiaRegistryRIPE NCC

As of 27th September 2026, AS212128 (LLC "HORIZON"), a network registered in Russia with RIPE NCC, originates 8 IPv4 prefixes covering 4.1k addresses and 18 IPv6 prefixes. By IPv4 address space that makes it the 17,073rd-largest of the 79,523 networks we see originating IPv4, and the 1,004th-largest of 4,942 in Russia. It is seen behind 1 upstream network, most often AS35807 (SkyNet Ltd.). 54% 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

8

IPv6 prefixes

18

IPv4 addresses

4.1k

IPv6 /64s

73B

Upstream graph

The networks AS212128 is seen behind, one and two hops out, drawn from real AS paths.

AS212128Toward the internet core
Upstream graph for AS212128: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS212128LLC "HORIZON"This networkAS35807SkyNet Ltd.AS9002RETN LimitedAS20764CJSC RASCOM

Networks observed one and two hops upstream of AS212128 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS212128
NetworkCountryRelationshipPathsVantage pts
AS35807SkyNet Ltd.RUPeer1,776144

Prefixes

All 26

The largest blocks AS212128 originates, widest first.

Largest prefixes originated by AS212128
PrefixAddressesVisibility
46.161.4.0/221k81/81
147.45.128.0/221k81/81
91.195.132.0/2351281/81
194.165.2.0/2351281/81
81.19.138.0/2425681/81
89.19.219.0/2425681/81
91.220.157.0/2425681/81
176.103.83.0/2425681/81
2a09:6906::/324.3B × /6463/64
2a10:cbc0::/324.3B × /6462/64

Routing health

How AS212128'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

  • Valid53.8%14
  • Invalid0.0%0
  • No ROA46.2%12

Propagation

  • Globally propagated90% of full-feed peers or more100.0%26
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 8 prefixes

IPv6 — 18 prefixes

  • /324.3B × /6494.4%17
  • /4865.5k × /645.6%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn2a11:e386::/3221st Sept 2026
  • Withdrawn2a12:70c5::/3221st Sept 2026
  • Withdrawn2a13:7e00::/3221st Sept 2026

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