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AS20712Andrews & Arnold Ltd

United KingdomRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS20712 (Andrews & Arnold Ltd), an access network registered in the United Kingdom with RIPE NCC, originates 88 IPv4 prefixes covering 157k addresses and 21 IPv6 prefixes. By IPv4 address space that makes it the 1,628th-largest of the 80,747 networks we see originating IPv4, and the 34th-largest of 2,122 in the United Kingdom. It is seen behind 33 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS2914 (NTT America, Inc.), and in front of 22 downstream networks. 85% 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

88

IPv6 prefixes

21

IPv4 addresses

157k

IPv6 /64s

5.6B

Upstream graph

The networks AS20712 is seen behind, one and two hops out, drawn from real AS paths.

AS20712Toward the internet core
Upstream graph for AS20712: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS20712Andrews & Arnold …This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS6939Hurricane Electri…AS25091IP-Max SAAS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS20712 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

188

adjacent networks

Upstreams
3318%
Peers
13371%
Downstreams
2212%

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

Upstreams of AS20712
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer3,100121
AS2914NTT America, Inc.USPeer2,591106
AS174Cogent Communications, LLCUSPeer97928
AS6939Hurricane Electric LLCUSPeer35811
AS25091IP-Max SACHPeer2784
AS13030Init7 (Switzerland) Ltd.CHPeer2022
AS18106Viewqwest Pte LtdSGPeer2002
AS14537Continent 8 LLCUSPeer1763
AS34549meerfarbig GmbH & Co. KGDEPeer1753
AS7195EdgeUnoCOPeer1653

Prefixes

All 109

The largest blocks AS20712 originates, widest first.

Largest prefixes originated by AS20712
PrefixAddressesVisibility
81.187.0.0/1665.5k76/76
81.2.64.0/1816.4k76/76
90.155.0.0/1816.4k76/76
90.155.64.0/198.2k76/76
217.169.0.0/198.2k76/76
5.172.160.0/204.1k76/76
90.155.96.0/204.1k76/76
178.238.144.0/204.1k76/76
90.155.0.0/221k76/76
90.155.4.0/221k76/76

Routing health

How AS20712'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

  • Valid85.3%93
  • Invalid0.0%0
  • No ROA14.7%16

Propagation

  • Globally propagated90% of full-feed peers or more100.0%109
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 88 prefixes

IPv6 — 21 prefixes

  • /324.3B × /644.8%1
  • /341.1B × /644.8%1
  • /36268M × /644.8%1
  • /4865.5k × /6485.7%18

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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