$ query “AS20712” --type=asn → 1 result(s)

AS20712 · AS20712

Andrews & Arnold Ltd

AS20712 is owned by Andrews & Arnold Ltd and is a mid-size transit provider, established in the United Kingdom in 2002. The system announces a solid 146 176 IPv4 addresses, including a /16, and supports IPv6. Most of its address space is geolocated to the United Kingdom, with additional presence in the United States. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇬🇧 United Kingdom
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
August 12, 2002
Last Changed
March 04, 2026
Last Seen
July 12, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
80 / 73
IPv6 Prefixes (raw / aggregated)
21 / 15
IPv4 Addresses
146 176
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇬🇧 United Kingdom (254 720 IPs), 🇺🇸 United States (1 280 IPs)
Prefix Changed
July 10, 2026

Reputation

Reputation
Good — 6 flagged IPs out of 146 176 total (0.00%)

Connectivity Summary

Upstream Providers
5 upstreams providing transit
Peers
91 networks exchanging traffic without transit
Downstream Customers
14 downstreams buying transit
Unclassified
11 unclassified BGP neighbors
Degree
121 unique BGP neighbors
Reach
14 networks in customer cone

Upstream Providers (5)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS12703 — PULSANT-AS

Prefix Lists

IPv4 Prefixes (80 total)

  • 81.187.0.0/16 (65 536 addresses (/16 prefix))
  • 90.155.0.0/18 (16 384 addresses (/18 prefix))
  • 81.2.64.0/18 (16 384 addresses (/18 prefix))
  • 217.169.0.0/19 (8 192 addresses (/19 prefix))
  • 90.155.64.0/19 (8 192 addresses (/19 prefix))
  • 5.172.160.0/20 (4 096 addresses (/20 prefix))
  • 178.238.144.0/20 (4 096 addresses (/20 prefix))
  • 90.155.96.0/20 (4 096 addresses (/20 prefix))
  • 194.4.172.0/22 (1 024 addresses (/22 prefix))
  • 188.191.132.0/22 (1 024 addresses (/22 prefix))
  • 109.205.152.0/22 (1 024 addresses (/22 prefix))
  • 185.6.132.0/23 (512 addresses (/23 prefix))
  • 51.146.73.0/24 (256 addresses (/24 prefix))
  • 91.190.105.0/24 (256 addresses (/24 prefix))
  • 45.134.251.0/24 (256 addresses (/24 prefix))
  • 45.135.9.0/24 (256 addresses (/24 prefix))
  • 45.135.11.0/24 (256 addresses (/24 prefix))
  • 45.136.217.0/24 (256 addresses (/24 prefix))
  • 45.136.219.0/24 (256 addresses (/24 prefix))
  • 45.138.77.0/24 (256 addresses (/24 prefix))
  • 45.138.79.0/24 (256 addresses (/24 prefix))
  • 45.139.33.0/24 (256 addresses (/24 prefix))
  • 45.139.35.0/24 (256 addresses (/24 prefix))
  • 45.139.229.0/24 (256 addresses (/24 prefix))
  • 45.139.231.0/24 (256 addresses (/24 prefix))
  • 45.140.69.0/24 (256 addresses (/24 prefix))
  • 45.140.71.0/24 (256 addresses (/24 prefix))
  • 45.140.134.0/24 (256 addresses (/24 prefix))
  • 45.140.215.0/24 (256 addresses (/24 prefix))
  • 45.141.49.0/24 (256 addresses (/24 prefix))
  • 45.141.51.0/24 (256 addresses (/24 prefix))
  • 45.142.205.0/24 (256 addresses (/24 prefix))
  • 45.142.207.0/24 (256 addresses (/24 prefix))
  • 45.144.157.0/24 (256 addresses (/24 prefix))
  • 45.144.159.0/24 (256 addresses (/24 prefix))
  • 45.129.91.0/24 (256 addresses (/24 prefix))
  • 51.194.130.0/24 (256 addresses (/24 prefix))
  • 45.129.89.0/24 (256 addresses (/24 prefix))
  • 45.92.3.0/24 (256 addresses (/24 prefix))
  • 45.89.39.0/24 (256 addresses (/24 prefix))
  • 45.89.37.0/24 (256 addresses (/24 prefix))
  • 45.88.23.0/24 (256 addresses (/24 prefix))
  • 91.190.97.0/24 (256 addresses (/24 prefix))
  • 45.134.249.0/24 (256 addresses (/24 prefix))
  • 91.200.61.0/24 (256 addresses (/24 prefix))
  • 91.208.66.0/24 (256 addresses (/24 prefix))
  • 91.240.176.0/24 (256 addresses (/24 prefix))
  • 91.242.172.0/24 (256 addresses (/24 prefix))
  • 91.244.239.0/24 (256 addresses (/24 prefix))
  • 93.187.168.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (21 total)

  • 2001:8b0::/32
  • 2001:8b6:2::/47
  • 2001:67c:2a4c::/48
  • 2001:67c:1270::/48
  • 2001:67c:2058::/48
  • 2001:67c:2a40::/48
  • 2001:678:3c4::/48
  • 2001:67c:2e80::/48
  • 2001:67c:2bc::/48
  • 2001:8b6:1::/48
  • 2001:678:c40::/48
  • 2a00:8e00:1::/48
  • 2a03:3a40:2000::/48
  • 2a05:6346:200::/48
  • 2a11:f2c0:ffc9::/48