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

AS8220 · COLT

COLT Technology Services Group Limited

AS8220 is run by COLT Technology Services Group Limited and is a major transit provider, registered in the United Kingdom since 2002. The system announces an impressive 1.5 million IPv4 addresses, including a /15, and supports IPv6. The bulk of its IP address space is in the United Kingdom, with additional presence in Germany and France, and smaller footprints in 39 additional countries. Prefix announcements for this AS were recently updated.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #48 by Reach — Top 100 by customer cone size
  • #67 by Degree — Top 100 by unique BGP neighbor count
  • #2 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
October 10, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
154 / 129
IPv6 Prefixes (raw / aggregated)
19 / 16
IPv4 Addresses
1 496 832
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/31
Geolocated Countries
🇬🇧 United Kingdom (382 272 IPs), 🇩🇪 Germany (292 448 IPs), 🇫🇷 France (183 920 IPs) and 39 more
Prefix Changed
October 10, 2026

Reputation

Reputation
Good — 9 flagged IPs out of 1 496 832 total (0.00%)

Connectivity Summary

Upstream Providers
5 upstreams providing transit
Peers
843 networks exchanging traffic without transit
Downstream Customers
1 069 downstreams buying transit
Unclassified
24 unclassified BGP neighbors
Degree
1 941 unique BGP neighbors
Reach
1 595 networks in customer cone

Upstream Providers (5)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3491 — PCCWG-APAC-HK (Tier-1 transit)
  • AS6453 — AS6453 (Tier-1 transit)
  • AS2764 — AAPT

Prefix Lists

IPv4 Prefixes (154 total)

  • 217.110.0.0/15 (131 072 addresses (/15 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))
  • 62.96.0.0/16 (65 536 addresses (/16 prefix))
  • 80.169.0.0/16 (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))
  • 148.109.0.0/16 (65 536 addresses (/16 prefix))
  • 213.61.0.0/16 (65 536 addresses (/16 prefix))
  • 213.86.0.0/16 (65 536 addresses (/16 prefix))
  • 58.1.128.0/17 (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))
  • 212.161.0.0/17 (32 768 addresses (/17 prefix))
  • 213.27.128.0/17 (32 768 addresses (/17 prefix))
  • 213.41.0.0/17 (32 768 addresses (/17 prefix))
  • 213.215.128.0/17 (32 768 addresses (/17 prefix))
  • 62.97.64.0/18 (16 384 addresses (/18 prefix))
  • 78.143.0.0/18 (16 384 addresses (/18 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))
  • 212.203.64.0/18 (16 384 addresses (/18 prefix))
  • 213.208.192.0/18 (16 384 addresses (/18 prefix))
  • 213.229.128.0/18 (16 384 addresses (/18 prefix))
  • 213.246.192.0/18 (16 384 addresses (/18 prefix))
  • 46.248.128.0/19 (8 192 addresses (/19 prefix))
  • 62.72.96.0/19 (8 192 addresses (/19 prefix))
  • 62.84.192.0/19 (8 192 addresses (/19 prefix))
  • 62.152.96.0/19 (8 192 addresses (/19 prefix))
  • 62.192.0.0/19 (8 192 addresses (/19 prefix))
  • 80.80.0.0/19 (8 192 addresses (/19 prefix))
  • 80.251.160.0/19 (8 192 addresses (/19 prefix))
  • 82.112.192.0/19 (8 192 addresses (/19 prefix))
  • 84.16.160.0/19 (8 192 addresses (/19 prefix))
  • 85.88.128.0/19 (8 192 addresses (/19 prefix))
  • 95.175.192.0/19 (8 192 addresses (/19 prefix))
  • 118.67.224.0/19 (8 192 addresses (/19 prefix))
  • 157.2.32.0/19 (8 192 addresses (/19 prefix))
  • 158.162.32.0/19 (8 192 addresses (/19 prefix))
  • 193.118.224.0/19 (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))
  • 212.0.96.0/19 (8 192 addresses (/19 prefix))
  • 212.23.224.0/19 (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))

IPv6 Prefixes (19 total)

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