$ query “AS8220” --type=asn → 1 result(s)

AS8220 · COLT

COLT Technology Services Group Limited

AS8220 is owned by COLT Technology Services Group Limited and is a major transit provider, based in the United Kingdom since 2002. The system announces an impressive 1.5 million IPv4 addresses, including a /15, and supports IPv6. Most of its address space is geolocated to the United Kingdom, with additional presence in Germany and France, and smaller footprints in 37 additional countries.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #81 by Reach — Top 100 by customer cone size
  • #56 by Degree — Top 100 by unique BGP neighbor count
  • #5 in United Kingdom — Top 10 by reach within country

Basic Information

Country
🇬🇧 United Kingdom
Category
Hosting
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
August 29, 2002
Last Changed
March 04, 2026
Last Seen
May 15, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
153 / 128
IPv6 Prefixes (raw / aggregated)
19 / 16
IPv4 Addresses
1 496 576
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/31
Geolocated Countries
🇬🇧 United Kingdom (894 656 IPs), 🇩🇪 Germany (598 768 IPs), 🇫🇷 France (373 552 IPs) and 37 more
Prefix Changed
April 19, 2026

Reputation

Reputation
Good — 3 flagged IPs out of 1 496 576 total (0.00%)

Connectivity Summary

Upstream Providers
6 upstreams providing transit
Peers
953 networks exchanging traffic without transit
Downstream Customers
1 065 downstreams buying transit
Unclassified
29 unclassified BGP neighbors
Degree
2 053 unique BGP neighbors
Reach
45 415 networks in customer cone

Upstream Providers (6)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS137409 — GSLNETWORKS-AS-AP
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3491 — PCCWG-AS (Tier-1 transit)
  • AS6453 — AS6453 (Tier-1 transit)
  • AS7545 — TPG-INTERNET-AP

Prefix Lists

IPv4 Prefixes (153 total)

  • 217.110.0.0/15 (131 072 addresses (/15 prefix))
  • 213.61.0.0/16 (65 536 addresses (/16 prefix))
  • 213.86.0.0/16 (65 536 addresses (/16 prefix))
  • 84.14.0.0/16 (65 536 addresses (/16 prefix))
  • 136.225.0.0/16 (65 536 addresses (/16 prefix))
  • 62.96.0.0/16 (65 536 addresses (/16 prefix))
  • 80.169.0.0/16 (65 536 addresses (/16 prefix))
  • 148.109.0.0/16 (65 536 addresses (/16 prefix))
  • 57.133.0.0/16 (65 536 addresses (/16 prefix))
  • 58.0.0.0/16 (65 536 addresses (/16 prefix))
  • 62.23.0.0/16 (65 536 addresses (/16 prefix))
  • 213.215.128.0/17 (32 768 addresses (/17 prefix))
  • 212.161.0.0/17 (32 768 addresses (/17 prefix))
  • 90.152.0.0/17 (32 768 addresses (/17 prefix))
  • 116.83.0.0/17 (32 768 addresses (/17 prefix))
  • 195.68.0.0/17 (32 768 addresses (/17 prefix))
  • 213.41.0.0/17 (32 768 addresses (/17 prefix))
  • 213.27.128.0/17 (32 768 addresses (/17 prefix))
  • 58.1.128.0/17 (32 768 addresses (/17 prefix))
  • 87.241.0.0/18 (16 384 addresses (/18 prefix))
  • 158.162.192.0/18 (16 384 addresses (/18 prefix))
  • 193.82.0.0/18 (16 384 addresses (/18 prefix))
  • 212.123.192.0/18 (16 384 addresses (/18 prefix))
  • 213.208.192.0/18 (16 384 addresses (/18 prefix))
  • 62.97.64.0/18 (16 384 addresses (/18 prefix))
  • 213.246.192.0/18 (16 384 addresses (/18 prefix))
  • 213.229.128.0/18 (16 384 addresses (/18 prefix))
  • 212.203.64.0/18 (16 384 addresses (/18 prefix))
  • 78.143.0.0/18 (16 384 addresses (/18 prefix))
  • 118.67.224.0/19 (8 192 addresses (/19 prefix))
  • 212.36.32.0/19 (8 192 addresses (/19 prefix))
  • 213.185.160.0/19 (8 192 addresses (/19 prefix))
  • 95.175.192.0/19 (8 192 addresses (/19 prefix))
  • 193.118.224.0/19 (8 192 addresses (/19 prefix))
  • 213.173.160.0/19 (8 192 addresses (/19 prefix))
  • 213.164.0.0/19 (8 192 addresses (/19 prefix))
  • 84.16.160.0/19 (8 192 addresses (/19 prefix))
  • 194.223.128.0/19 (8 192 addresses (/19 prefix))
  • 195.110.64.0/19 (8 192 addresses (/19 prefix))
  • 82.112.192.0/19 (8 192 addresses (/19 prefix))
  • 80.251.160.0/19 (8 192 addresses (/19 prefix))
  • 80.80.0.0/19 (8 192 addresses (/19 prefix))
  • 212.0.96.0/19 (8 192 addresses (/19 prefix))
  • 212.23.224.0/19 (8 192 addresses (/19 prefix))
  • 62.192.0.0/19 (8 192 addresses (/19 prefix))
  • 157.2.32.0/19 (8 192 addresses (/19 prefix))
  • 212.31.224.0/19 (8 192 addresses (/19 prefix))
  • 212.35.96.0/19 (8 192 addresses (/19 prefix))
  • 85.88.128.0/19 (8 192 addresses (/19 prefix))
  • 158.162.32.0/19 (8 192 addresses (/19 prefix))

IPv6 Prefixes (19 total)

  • 2001:920::/31
  • 2001:924::/31
  • 2400:81e0::/32
  • 2001:926::/32
  • 2a06:6540:1241::/48
  • 2001:67c:2b34::/48
  • 2001:67c:424::/48
  • 2001:678:1020::/48
  • 2001:678:868::/48
  • 2a06:6540:1440::/48
  • 2a06:6540:4101::/48
  • 2a06:6540:4181::/48
  • 2a06:6541:1241::/48
  • 2a06:6541:1440::/48
  • 2a06:6541:4101::/48
  • 2a06:6541:4181::/48