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AS201106Spartan Host Ltd

United KingdomRegistryRIPE NCC

As of 27th September 2026, AS201106 (Spartan Host Ltd), a network registered in the United Kingdom with RIPE NCC, originates 54 IPv4 prefixes covering 14.6k addresses. By IPv4 address space that makes it the 8,584th-largest of the 79,525 networks we see originating IPv4, and the 249th-largest of 2,074 in the United Kingdom. It is seen behind 1 upstream network, most often AS40065 (CNSERVERS LLC), and in front of 1 downstream network. 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

54

IPv6 prefixes

0

IPv4 addresses

14.6k

IPv6 /64s

0

Upstream graph

The networks AS201106 is seen behind, one and two hops out, drawn from real AS paths.

AS201106Toward the internet core
Upstream graph for AS201106: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS201106Spartan Host LtdThis networkAS40065CNSERVERS LLCAS1299Arelion (fka. Tel…AS3257GTT Communication…

Networks observed one and two hops upstream of AS201106 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

4

adjacent networks

Upstreams
125%
Peers
250%
Downstreams
125%

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

Upstreams of AS201106
NetworkCountryRelationshipPathsVantage pts
AS40065CNSERVERS LLCUSPeer4,44381

Prefixes

All 54

The largest blocks AS201106 originates, widest first.

Largest prefixes originated by AS201106
PrefixAddressesVisibility
45.151.132.0/221k81/81
45.43.29.0/2425681/81
45.43.31.0/2425681/81
45.58.53.0/2425681/81
45.142.156.0/2425681/81
45.142.157.0/2425681/81
45.142.158.0/2425681/81
45.142.159.0/2425681/81
45.145.72.0/2425681/81
45.145.73.0/2425681/81

Routing health

How AS201106'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%54
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%54
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 54 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS201106 started or stopped in this period.

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