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

AS20712 — AS20712

Andrews & Arnold Ltd

AS20712 is a mid-size transit provider operated by Andrews & Arnold Ltd, based in the United Kingdom since 2002. The network announces a solid 143 872 IPv4 addresses, including a /16. Supports IPv6.

  • 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
March 05, 2026

Prefix Summary

IPv4 Prefixes (raw / aggregated)
68 / 63
IPv6 Prefixes (raw / aggregated)
20 / 14
IPv4 Addresses
143 872
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇬🇧 GB (221 IPs), 🇺🇸 US (4 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 6 flagged IPs out of 143 872 total (0.00%)

Connectivity Summary

Upstream Providers
6 upstream autonomous systems providing transit
Peers
85 autonomous systems exchanging traffic without transit fees
Downstream Customers
11 downstream autonomous systems buying transit
Degree
113 unique BGP neighbors (providers + customers + peers)
Reach
11 — customer cone size measuring network influence
Degree Rank
#1 319
Reach Rank
#3 001

Upstream Providers (6)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS16265 — LEASEWEB-NETWORK
  • AS12703 — PULSANT-AS

Prefix Lists

IPv4 Prefixes (68 total)

  • 81.187.0.0/16 (65 536 addresses)
  • 81.2.64.0/18 (16 384 addresses)
  • 90.155.0.0/18 (16 384 addresses)
  • 90.155.64.0/19 (8 192 addresses)
  • 217.169.0.0/19 (8 192 addresses)
  • 5.172.160.0/20 (4 096 addresses)
  • 90.155.96.0/20 (4 096 addresses)
  • 178.238.144.0/20 (4 096 addresses)
  • 109.205.152.0/22 (1 024 addresses)
  • 188.191.132.0/22 (1 024 addresses)
  • 194.4.172.0/22 (1 024 addresses)
  • 185.6.132.0/23 (512 addresses)
  • 193.239.174.0/23 (512 addresses)
  • 44.30.117.0/24 (256 addresses)
  • 44.31.166.0/24 (256 addresses)
  • 44.31.241.0/24 (256 addresses)
  • 44.32.156.0/24 (256 addresses)
  • 45.88.21.0/24 (256 addresses)
  • 45.88.23.0/24 (256 addresses)
  • 45.89.37.0/24 (256 addresses)
  • 45.89.39.0/24 (256 addresses)
  • 45.92.3.0/24 (256 addresses)
  • 45.129.89.0/24 (256 addresses)
  • 45.129.91.0/24 (256 addresses)
  • 45.134.249.0/24 (256 addresses)
  • 45.134.251.0/24 (256 addresses)
  • 45.135.9.0/24 (256 addresses)
  • 45.135.11.0/24 (256 addresses)
  • 45.136.217.0/24 (256 addresses)
  • 45.136.219.0/24 (256 addresses)
  • 45.138.77.0/24 (256 addresses)
  • 45.138.79.0/24 (256 addresses)
  • 45.139.33.0/24 (256 addresses)
  • 45.139.35.0/24 (256 addresses)
  • 45.139.229.0/24 (256 addresses)
  • 45.139.231.0/24 (256 addresses)
  • 45.140.69.0/24 (256 addresses)
  • 45.140.71.0/24 (256 addresses)
  • 45.140.134.0/24 (256 addresses)
  • 45.140.215.0/24 (256 addresses)
  • 45.141.49.0/24 (256 addresses)
  • 45.141.51.0/24 (256 addresses)
  • 45.142.205.0/24 (256 addresses)
  • 45.142.207.0/24 (256 addresses)
  • 45.144.157.0/24 (256 addresses)
  • 45.144.159.0/24 (256 addresses)
  • 91.190.97.0/24 (256 addresses)
  • 91.190.105.0/24 (256 addresses)
  • 91.200.61.0/24 (256 addresses)
  • 91.208.66.0/24 (256 addresses)

IPv6 Prefixes (20 total)

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