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AS61323ANS ACADEMY LIMITED

United KingdomRegistryRIPE NCC

As of 28th September 2026, AS61323 (ANS ACADEMY LIMITED), a network registered in the United Kingdom with RIPE NCC, originates 60 IPv4 prefixes covering 82.7k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 2,705th-largest of the 79,544 networks we see originating IPv4, and the 68th-largest of 2,074 in the United Kingdom. It is seen behind 39 upstream networks, most often AS6461 (Zayo Bandwidth) and AS3257 (GTT Communications Inc.), and in front of 4 downstream networks. 97% 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

60

IPv6 prefixes

6

IPv4 addresses

82.7k

IPv6 /64s

38.7B

Upstream graph

The networks AS61323 is seen behind, one and two hops out, drawn from real AS paths.

AS61323Toward the internet core
Upstream graph for AS61323: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS61323ANS ACADEMY LIMIT…This networkAS174Cogent Communicat…AS3257GTT Communication…AS6461Zayo BandwidthAS6667Elisa OyjAS6939Hurricane Electri…AS151326DCConnect Communi…AS398465Rackdog LLCAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS32590Valve CorporationAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS61323 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

172

adjacent networks

Upstreams
3923%
Peers
12975%
Downstreams
42%

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

Upstreams of AS61323
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer1,62485
AS3257GTT Communications Inc.USPeer1,42766
AS174Cogent Communications, LLCUSPeer1,09735
AS6939Hurricane Electric LLCUSPeer56220
AS6667Elisa OyjFIPeer3324
AS13030Init7 (Switzerland) Ltd.CHPeer3324
AS25091IP-Max SACHPeer3325
AS18106Viewqwest Pte LtdSGPeer3304
AS38880Micron21 Datacentre Pty LtdAUPeer2972
AS14537Continent 8 LLCUSPeer1783

Prefixes

All 66

The largest blocks AS61323 originates, widest first.

Largest prefixes originated by AS61323
PrefixAddressesVisibility
46.37.160.0/198.2k81/82
109.108.128.0/198.2k81/82
31.193.0.0/204.1k81/82
78.109.160.0/204.1k81/82
78.137.112.0/204.1k81/82
80.244.176.0/204.1k81/82
81.201.128.0/204.1k81/82
94.229.160.0/204.1k81/82
178.238.128.0/204.1k81/82
37.220.88.0/212k81/82

Routing health

How AS61323'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

  • Valid97.0%64
  • Invalid0.0%0
  • No ROA3.0%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%66
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 60 prefixes

IPv6 — 6 prefixes

  • /2934.4B × /6416.7%1
  • /324.3B × /6416.7%1
  • /4865.5k × /6466.7%4

Recent changes

Announcements that started or stopped since 29th Aug 2026.

No announcement by AS61323 started or stopped in this period.

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