Address space
AS17 PURDUE
IPv4 prefixes
64
234K addresses
IPv6 prefixes
12
Most common size
/24
IPv4
Flagged
17
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 |
|---|---|---|
| US | United States of America | 76 |
Review
Flagged prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 192.5.40.0/28 | IPv4 | 16 | US | Too specific |
| 192.5.40.20/30 | IPv4 | 4 | US | Too specific |
| 192.5.40.24/31 | IPv4 | 2 | US | Too specific |
| 192.5.40.28/30 | IPv4 | 4 | US | Too specific |
| 192.5.40.32/27 | IPv4 | 32 | US | Too specific |
| 192.5.40.64/28 | IPv4 | 16 | US | Too specific |
| 192.5.40.80/29 | IPv4 | 8 | US | Too specific |
| 192.5.40.88/30 | IPv4 | 4 | US | Too specific |
| 192.5.40.96/27 | IPv4 | 32 | US | Too specific |
| 192.5.40.128/25 | IPv4 | 128 | US | Too specific |
| 192.12.63.0/31 | IPv4 | 2 | US | Too specific |
| 192.12.63.4/31 | IPv4 | 2 | US | Too specific |
| 192.12.63.8/29 | IPv4 | 8 | US | Too specific |
| 192.12.63.16/28 | IPv4 | 16 | US | Too specific |
| 192.12.63.32/27 | IPv4 | 32 | US | Too specific |
| 192.12.63.64/26 | IPv4 | 64 | US | Too specific |
| 192.12.63.128/25 | IPv4 | 128 | US | Too specific |
A flag is an observation, not an accusation. Very large and very specific prefixes are both legitimate in the right context.
Inventory