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AS29676Gradwell Communications Limited

United KingdomRegistryRIPE NCC

As of 12th November 2026, AS29676 (Gradwell Communications Limited), a network registered in the United Kingdom with RIPE NCC, originates 14 IPv4 prefixes covering 8.7k addresses. By IPv4 address space that makes it the 11,639th-largest of the 80,772 networks we see originating IPv4, and the 358th-largest of 2,122 in the United Kingdom. It is seen behind 1 upstream network, most often AS21267 (Wavenet Limited), and in front of 1 downstream network. 21% 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

14

IPv6 prefixes

0

IPv4 addresses

8.7k

IPv6 /64s

0

Upstream graph

The networks AS29676 is seen behind, one and two hops out, drawn from real AS paths.

AS29676Toward the internet core
Upstream graph for AS29676: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS29676Gradwell Communic…This networkAS21267Wavenet LimitedAS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS29676 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 AS29676
NetworkCountryRelationshipPathsVantage pts
AS21267Wavenet LimitedGBPeer1,09378

Prefixes

The largest blocks AS29676 originates, widest first.

Largest prefixes originated by AS29676
PrefixAddressesVisibility
109.224.192.0/204.1k78/78
109.236.164.0/221k78/78
109.224.220.0/2351278/78
109.236.162.0/2351278/78
79.135.96.0/2425678/78
79.135.97.0/2425678/78
79.135.98.0/2425678/78
79.135.99.0/2425678/78
109.224.222.0/2425678/78
109.236.161.0/2425678/78

Routing health

How AS29676'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

  • Valid21.4%3
  • Invalid0.0%0
  • No ROA78.6%11

Propagation

  • Globally propagated90% of full-feed peers or more100.0%14
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 14 prefixes

Recent changes

Announcements that started or stopped since 13th Oct 2026.

No announcement by AS29676 started or stopped in this period.

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