Address space
AS8220 COLT COLT Technology Services Group Limited
IPv4 prefixes
279
1.49M addresses
IPv6 prefixes
32
Most common size
/24
IPv4
Flagged
8
Shape
Prefix sizes
How this network carves its IPv4 space. A wall of /24s usually means many small customer assignments or fine-grained traffic engineering; a few short prefixes means large contiguous allocations announced whole.
Shape
Prefix sizes
Geography
Where the space lands
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 311 |
Review
Flagged prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 213.61.66.0/26 | IPv4 | 64 | GB | Too specific |
| 213.61.66.64/27 | IPv4 | 32 | GB | Too specific |
| 213.61.66.96/28 | IPv4 | 16 | GB | Too specific |
| 213.61.66.112/30 | IPv4 | 4 | GB | Too specific |
| 213.61.66.117/32 | IPv4 | 1 | GB | Too specific |
| 213.61.66.118/31 | IPv4 | 2 | GB | Too specific |
| 213.61.66.120/29 | IPv4 | 8 | GB | Too specific |
| 213.61.66.128/25 | IPv4 | 128 | GB | Too specific |
A flag is an observation, not an accusation. Very large and very specific prefixes are both legitimate in the right context.
Inventory