Address space
AS1842 USGS-AS - Department of Interior United States Geological Survey
Unclassified ARIN
IPv4 prefixes
6
1.28K addresses
IPv6 prefixes
1
Most common size
/24
IPv4
Flagged
1
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 | 7 |
Review
Flagged prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 198.187.220.36/32 | IPv4 | 1 | US | Too specific |
A flag is an observation, not an accusation. Very large and very specific prefixes are both legitimate in the right context.