subnet.im

AS41811CONVERGENCE (GROUP NETWORKS) LIMITED

United KingdomRegistryRIPE NCC

As of 10th November 2026, AS41811 (CONVERGENCE (GROUP NETWORKS) LIMITED), a network registered in the United Kingdom with RIPE NCC, originates 17 IPv4 prefixes covering 27.9k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 5,987th-largest of the 80,733 networks we see originating IPv4, and the 166th-largest of 2,122 in the United Kingdom. It is seen behind 30 upstream networks, most often AS3356 (Lumen (Level 3)) and AS1273 (Vodafone Group PLC), and in front of 647 downstream networks. 61% 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

17

IPv6 prefixes

1

IPv4 addresses

27.9k

IPv6 /64s

4.3B

Upstream graph

The networks AS41811 is seen behind, one and two hops out, drawn from real AS paths.

AS41811Toward the internet core
Upstream graph for AS41811: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS41811CONVERGENCE (GROU…This networkAS1273Vodafone Group PLCAS3356Lumen (Level 3)AS4637Telstra Internati…AS6939Hurricane Electri…AS25091IP-Max SAAS6667Elisa OyjAS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS16552Tiggee LLCAS32590Valve CorporationAS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS41811 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

1,336

adjacent networks

Upstreams
302%
Peers
65949%
Downstreams
64748%

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

Upstreams of AS41811
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer51051
AS1273Vodafone Group PLCEUPeer46432
AS6939Hurricane Electric LLCUSPeer10342
AS4637Telstra International LimitedHKPeer453
AS25091IP-Max SACHPeer353
AS18106Viewqwest Pte LtdSGPeer322
AS5413Wavenet LimitedGBPeer212
AS49544i3D.net B.VNLPeer212
AS24482SG.GSSGPeer202
AS37100SEACOM LimitedMUPeer201

Prefixes

The largest blocks AS41811 originates, widest first.

Largest prefixes originated by AS41811
PrefixAddressesVisibility
137.221.128.0/198.2k76/76
37.205.56.0/212k76/76
46.255.112.0/212k76/76
88.151.216.0/212k76/76
88.202.168.0/212k76/76
109.232.56.0/212k76/76
137.221.160.0/212k76/76
137.221.184.0/212k76/76
137.221.168.0/221k76/76
137.221.176.0/221k76/76

Routing health

How AS41811'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

  • Valid61.1%11
  • Invalid0.0%0
  • No ROA38.9%7

Propagation

  • Globally propagated90% of full-feed peers or more100.0%18
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 17 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS41811 started or stopped in this period.

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