Address space
AS38 UIUC
Unclassified ARIN
IPv4 prefixes
16
211K addresses
IPv6 prefixes
2
Most common size
/16
IPv4
Flagged
3
Shape
IPv4 prefix sizes
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
IPv6 prefix sizes
Geography
Where the space lands
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 18 |
Review
Flagged prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 72.36.97.0/26 | IPv4 | 64 | US | Too specific |
| 72.36.97.64/26 | IPv4 | 64 | US | Too specific |
| 72.36.97.128/25 | 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.