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AS51031Anastasiia Hein

United KingdomRegistryRIPE NCCTypeEyeball

As of 12th November 2026, AS51031 (Anastasiia Hein), an access network registered in the United Kingdom with RIPE NCC, originates 6 IPv4 prefixes covering 1.8k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 30,411th-largest of the 80,772 networks we see originating IPv4, and the 868th-largest of 2,122 in the United Kingdom. It is seen behind 4 upstream networks, most often AS48266 (Catixs Ltd) and AS4229 (Zenlayer Inc). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 78% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

6

IPv6 prefixes

3

IPv4 addresses

1.8k

IPv6 /64s

16.9M

Upstream graph

The networks AS51031 is seen behind, one and two hops out, drawn from real AS paths.

AS51031Toward the internet core
Upstream graph for AS51031: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS51031Anastasiia HeinThis networkAS4229Zenlayer IncAS17433Hytron Network Se…AS21859Zenlayer IncAS48266Catixs LtdAS6453TATA Communicatio…AS2914NTT America, Inc.AS3356Lumen (Level 3)AS3491PCCW Global (HK) …AS174Cogent Communicat…AS9002RETN Limited

Networks observed one and two hops upstream of AS51031 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

8

adjacent networks

Upstreams
450%
Peers
450%
Downstreams
00%

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

Upstreams of AS51031
NetworkCountryRelationshipPathsVantage pts
AS48266Catixs LtdGBPeer256110
AS4229Zenlayer IncUSPeer21287
AS17433Hytron Network Services LimitedHKPeer4417
AS21859Zenlayer IncUSPeer168

Prefixes

The largest blocks AS51031 originates, widest first.

Largest prefixes originated by AS51031
PrefixAddressesVisibility
216.235.240.0/2351278/78
31.56.66.0/2425678/78
31.57.248.0/2425678/78
161.248.137.0/2425678/78
216.235.240.0/2425614/78
216.235.241.0/2425614/78
2a0f:1cc5:4100::/4016.8M × /6463/64
2001:678:12ac::/4865.5k × /6463/64
2a13:9500:182::/4865.5k × /6462/64

Routing health

How AS51031'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%9
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more77.8%7
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%22.2%2

Prefix sizes

IPv4 — 6 prefixes

IPv6 — 3 prefixes

  • /4016.8M × /6433.3%1
  • /4865.5k × /6466.7%2

Recent changes

Announcements that started or stopped since 13th Oct 2026.

No announcement by AS51031 started or stopped in this period.

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