Autonomous System
AS8220 COLT Technology Services Group Limited
ISPActiveUnited KingdomRIPE
AS8220 (COLT) is an ISP network operated by COLT Technology Services Group Limited in United Kingdom, registered with RIPE. It has 153 IPv4 prefixes with 1,518,080 addresses and 19 IPv6 prefixes, which makes it the 334th largest of 82,283 active autonomous systems by IPv4 space.
IPv4 addresses1,518,080in 153 prefixes
IPv6 prefixes19≈ 4.8 × 10²⁹ addresses
Size rank#334of 82,283 active ASNs
Details
OrganizationCOLT Technology Services Group Limited
AS nameCOLT
Websitecolt.net
Country United Kingdom (GB)
Network typeISP
RegistryRIPE
Abuse contactabuse@colt.net
Registered2002-08-29
Last updated2026-06-22
IPv4 prefixes
153 prefixes · 1,518,080 addresses| Network | Addresses | First – last address |
|---|---|---|
| 217.110.0.0/15 | 131,072 | 217.110.0.0 – 217.111.255.255 |
| 57.133.0.0/16 | 65,536 | 57.133.0.0 – 57.133.255.255 |
| 58.0.0.0/16 | 65,536 | 58.0.0.0 – 58.0.255.255 |
| 62.23.0.0/16 | 65,536 | 62.23.0.0 – 62.23.255.255 |
| 62.96.0.0/16 | 65,536 | 62.96.0.0 – 62.96.255.255 |
| 80.169.0.0/16 | 65,536 | 80.169.0.0 – 80.169.255.255 |
| 84.14.0.0/16 | 65,536 | 84.14.0.0 – 84.14.255.255 |
| 136.225.0.0/16 | 65,536 | 136.225.0.0 – 136.225.255.255 |
| 148.109.0.0/16 | 65,536 | 148.109.0.0 – 148.109.255.255 |
| 213.61.0.0/16 | 65,536 | 213.61.0.0 – 213.61.255.255 |
| 213.86.0.0/16 | 65,536 | 213.86.0.0 – 213.86.255.255 |
| 58.1.128.0/17 | 32,768 | 58.1.128.0 – 58.1.255.255 |
| 116.83.0.0/17 | 32,768 | 116.83.0.0 – 116.83.127.255 |
| 195.68.0.0/17 | 32,768 | 195.68.0.0 – 195.68.127.255 |
| 212.161.0.0/17 | 32,768 | 212.161.0.0 – 212.161.127.255 |
| 213.27.128.0/17 | 32,768 | 213.27.128.0 – 213.27.255.255 |
| 213.41.0.0/17 | 32,768 | 213.41.0.0 – 213.41.127.255 |
| 213.215.128.0/17 | 32,768 | 213.215.128.0 – 213.215.255.255 |
| 62.97.64.0/18 | 16,384 | 62.97.64.0 – 62.97.127.255 |
| 78.143.0.0/18 | 16,384 | 78.143.0.0 – 78.143.63.255 |
| 87.241.0.0/18 | 16,384 | 87.241.0.0 – 87.241.63.255 |
| 90.152.0.0/18 | 16,384 | 90.152.0.0 – 90.152.63.255 |
| 90.152.64.0/18 | 16,384 | 90.152.64.0 – 90.152.127.255 |
| 158.162.192.0/18 | 16,384 | 158.162.192.0 – 158.162.255.255 |
| 212.123.192.0/18 | 16,384 | 212.123.192.0 – 212.123.255.255 |
217.110.0.0/15 57.133.0.0/16 58.0.0.0/16 62.23.0.0/16 62.96.0.0/16 80.169.0.0/16 84.14.0.0/16 136.225.0.0/16 148.109.0.0/16 213.61.0.0/16 213.86.0.0/16 58.1.128.0/17 116.83.0.0/17 195.68.0.0/17 212.161.0.0/17 213.27.128.0/17 213.41.0.0/17 213.215.128.0/17 62.97.64.0/18 78.143.0.0/18 87.241.0.0/18 90.152.0.0/18 90.152.64.0/18 158.162.192.0/18 212.123.192.0/18
The 25 largest of 153. The API and the database have all of them.
IPv6 prefixes
19 prefixes- 2001:920::/32
- 2001:921::/32
- 2001:924::/32
- 2001:925::/32
- 2001:926::/32
- 2400:81e0::/32
- 2001:678:868::/48
- 2001:678:1020::/48
- 2001:67c:424::/48
- 2001:67c:2b34::/48
- 2001:926:40::/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
2001:920::/32 2001:921::/32 2001:924::/32 2001:925::/32 2001:926::/32 2400:81e0::/32 2001:678:868::/48 2001:678:1020::/48 2001:67c:424::/48 2001:67c:2b34::/48 2001:926:40::/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
Query AS8220 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS8220&key=YOUR_API_KEY"Any address in its prefixes resolves to AS8220, with or without a key:
curl "https://api.ipapi.is/?q=217.110.0.1"