$ query “AS8220” --type=asn → 1 result(s)
AS8220 — COLT
COLT Technology Services Group Limited
AS8220 is a major transit provider operated by COLT Technology Services Group Limited, registered in the United Kingdom since 2002. The network announces an impressive 1.5 million IPv4 addresses, including a /15. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #17 by Reach — Top 100 by customer cone size
- #60 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
- March 04, 2026
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
- 🇬🇧 GB (118 IPs), 🇩🇪 DE (316 IPs), 🇫🇷 FR (49 IPs), 🇯🇵 JP, 🇮🇹 IT, 🇪🇸 ES, 🇨🇭 CH, 🇮🇪 IE, 🇧🇪 BE, 🇳🇱 NL, 🇵🇹 PT, 🇦🇹 AT, 🇩🇰 DK, 🇵🇱 PL and 27 more
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 4 flagged IPs out of 1 496 832 total (0.00%)
Connectivity Summary
- Upstream Providers
- 4 upstream autonomous systems providing transit
- Peers
- 854 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 1 061 downstream autonomous systems buying transit
- Degree
- 1 942 unique BGP neighbors (providers + customers + peers)
- Reach
- 48 421 — customer cone size measuring network influence
- Degree Rank
- #60
- Reach Rank
- #17
- Country Rank
- #2
Upstream Providers (4)
Prefix Lists
IPv4 Prefixes (154 total)
- 217.110.0.0/15 (131 072 addresses)
- 57.133.0.0/16 (65 536 addresses)
- 58.0.0.0/16 (65 536 addresses)
- 62.23.0.0/16 (65 536 addresses)
- 62.96.0.0/16 (65 536 addresses)
- 80.169.0.0/16 (65 536 addresses)
- 84.14.0.0/16 (65 536 addresses)
- 136.225.0.0/16 (65 536 addresses)
- 148.109.0.0/16 (65 536 addresses)
- 213.61.0.0/16 (65 536 addresses)
- 213.86.0.0/16 (65 536 addresses)
- 58.1.128.0/17 (32 768 addresses)
- 90.152.0.0/17 (32 768 addresses)
- 116.83.0.0/17 (32 768 addresses)
- 195.68.0.0/17 (32 768 addresses)
- 212.161.0.0/17 (32 768 addresses)
- 213.27.128.0/17 (32 768 addresses)
- 213.41.0.0/17 (32 768 addresses)
- 213.215.128.0/17 (32 768 addresses)
- 62.97.64.0/18 (16 384 addresses)
- 78.143.0.0/18 (16 384 addresses)
- 87.241.0.0/18 (16 384 addresses)
- 158.162.192.0/18 (16 384 addresses)
- 193.82.0.0/18 (16 384 addresses)
- 212.123.192.0/18 (16 384 addresses)
- 212.203.64.0/18 (16 384 addresses)
- 213.208.192.0/18 (16 384 addresses)
- 213.229.128.0/18 (16 384 addresses)
- 213.246.192.0/18 (16 384 addresses)
- 46.248.128.0/19 (8 192 addresses)
- 62.72.96.0/19 (8 192 addresses)
- 62.84.192.0/19 (8 192 addresses)
- 62.152.96.0/19 (8 192 addresses)
- 62.192.0.0/19 (8 192 addresses)
- 80.80.0.0/19 (8 192 addresses)
- 80.251.160.0/19 (8 192 addresses)
- 82.112.192.0/19 (8 192 addresses)
- 84.16.160.0/19 (8 192 addresses)
- 85.88.128.0/19 (8 192 addresses)
- 95.175.192.0/19 (8 192 addresses)
- 118.67.224.0/19 (8 192 addresses)
- 157.2.32.0/19 (8 192 addresses)
- 158.162.32.0/19 (8 192 addresses)
- 193.118.224.0/19 (8 192 addresses)
- 194.223.128.0/19 (8 192 addresses)
- 195.110.64.0/19 (8 192 addresses)
- 212.0.96.0/19 (8 192 addresses)
- 212.23.224.0/19 (8 192 addresses)
- 212.31.224.0/19 (8 192 addresses)
- 212.35.96.0/19 (8 192 addresses)
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