Address space
AS4 ISI-AS
IPv4 prefixes
30
66.56K addresses
IPv6 prefixes
5
Most common size
/24
IPv4
Flagged
0
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 | 35 |
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 43.240.64.0/24 | IPv4 | 256 | US | |
| 45.228.73.0/24 | IPv4 | 256 | US | |
| 45.228.74.0/23 | IPv4 | 512 | US | |
| 128.9.0.0/20 | IPv4 | 4,096 | US | |
| 128.9.16.0/22 | IPv4 | 1,024 | US | |
| 128.9.26.0/24 | IPv4 | 256 | US | |
| 128.9.28.0/22 | IPv4 | 1,024 | US | |
| 128.9.32.0/22 | IPv4 | 1,024 | US | |
| 128.9.36.0/23 | IPv4 | 512 | US | |
| 128.9.38.0/24 | IPv4 | 256 | US | |
| 128.9.39.0/24 | IPv4 | 256 | US | |
| 128.9.40.0/24 | IPv4 | 256 | US | |
| 128.9.41.0/24 | IPv4 | 256 | US | |
| 128.9.42.0/23 | IPv4 | 512 | US | |
| 128.9.44.0/22 | IPv4 | 1,024 | US | |
| 128.9.48.0/20 | IPv4 | 4,096 | US | |
| 128.9.64.0/19 | IPv4 | 8,192 | US | |
| 128.9.96.0/20 | IPv4 | 4,096 | US | |
| 128.9.112.0/23 | IPv4 | 512 | US | |
| 128.9.114.0/23 | IPv4 | 512 | US | |
| 128.9.116.0/23 | IPv4 | 512 | US | |
| 128.9.118.0/23 | IPv4 | 512 | US | |
| 128.9.120.0/21 | IPv4 | 2,048 | US | |
| 128.9.128.0/17 | IPv4 | 32,768 | US | |
| 170.79.218.0/23 | IPv4 | 512 | US | |
| 198.32.16.0/24 | IPv4 | 256 | US | |
| 206.117.6.0/24 | IPv4 | 256 | US | |
| 206.117.27.0/24 | IPv4 | 256 | US | |
| 206.117.31.0/24 | IPv4 | 256 | US | |
| 206.117.37.0/24 | IPv4 | 256 | US | |
| 2001:500:202::/48 | IPv6 | — | US | |
| 2001:1878:401::/48 | IPv6 | — | US | |
| 2001:1878:402::/47 | IPv6 | — | US | |
| 2001:1878:404::/48 | IPv6 | — | US | |
| 2606:d5c0::/32 | IPv6 | — | US |