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AS48950Global Custom Data Limited

United KingdomRegistryRIPE NCC

As of 27th September 2026, AS48950 (Global Custom Data Limited), a network registered in the United Kingdom with RIPE NCC, originates 29 IPv4 prefixes covering 7.4k addresses. By IPv4 address space that makes it the 12,886th-largest of the 79,525 networks we see originating IPv4, and the 390th-largest of 2,074 in the United Kingdom. It is seen behind 2 upstream networks, most often AS41564 (Orion Network Limited) and AS3257 (GTT Communications Inc.). 17% 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

29

IPv6 prefixes

0

IPv4 addresses

7.4k

IPv6 /64s

0

Upstream graph

The networks AS48950 is seen behind, one and two hops out, drawn from real AS paths.

AS48950Toward the internet core
Upstream graph for AS48950: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS48950Global Custom Dat…This networkAS3257GTT Communication…AS41564Orion Network Lim…AS6667Elisa OyjAS398465Rackdog LLCAS174Cogent Communicat…AS3399Obenet AB

Networks observed one and two hops upstream of AS48950 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

5

adjacent networks

Upstreams
240%
Peers
360%
Downstreams
00%

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

Upstreams of AS48950
NetworkCountryRelationshipPathsVantage pts
AS41564Orion Network LimitedGBPeer1,78281
AS3257GTT Communications Inc.USPeer56781

Prefixes

All 29

The largest blocks AS48950 originates, widest first.

Largest prefixes originated by AS48950
PrefixAddressesVisibility
5.157.30.0/2425681/81
5.157.31.0/2425681/81
158.222.3.0/2425681/81
158.222.5.0/2425681/81
158.222.7.0/2425681/81
165.231.134.0/2425681/81
165.231.136.0/2425681/81
165.231.138.0/2425681/81
165.231.140.0/2425681/81
196.196.101.0/2425681/81

Routing health

How AS48950'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

  • Valid17.2%5
  • Invalid0.0%0
  • No ROA82.8%24

Propagation

  • Globally propagated90% of full-feed peers or more100.0%29
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 29 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn165.231.64.0/2421st Sept 2026
  • Withdrawn165.231.65.0/2421st Sept 2026
  • Withdrawn165.231.66.0/2421st Sept 2026
  • Withdrawn165.231.67.0/2421st Sept 2026
  • Withdrawn196.198.13.0/2421st Sept 2026
  • Withdrawn196.240.57.0/2421st Sept 2026
  • Withdrawn196.242.141.0/2421st Sept 2026
  • Withdrawn196.242.70.0/2421st Sept 2026
  • Withdrawn196.242.72.0/2421st Sept 2026
  • Withdrawn196.242.77.0/2421st Sept 2026
  • Withdrawn196.245.231.0/2421st Sept 2026
  • Withdrawn196.58.13.0/2421st Sept 2026

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