Address space
AS6431 ATT-RESEARCH
IPv4 prefixes
7
200K addresses
IPv6 prefixes
7
Most common size
/16
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 | 14 |
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 12.106.32.0/22 | IPv4 | 1,024 | US | |
| 135.197.0.0/16 | IPv4 | 65,536 | US | |
| 135.205.0.0/16 | IPv4 | 65,536 | US | |
| 135.207.0.0/16 | IPv4 | 65,536 | US | |
| 192.20.225.0/24 | IPv4 | 256 | US | |
| 204.178.8.0/21 | IPv4 | 2,048 | US | |
| 207.76.218.0/24 | IPv4 | 256 | US | |
| 2620:0:f00::/47 | IPv6 | — | US | |
| 2620:0:f02::/47 | IPv6 | — | US | |
| 2620:0:f04::/46 | IPv6 | — | US | |
| 2620:0:f08::/45 | IPv6 | — | US | |
| 2620:0:f10::/44 | IPv6 | — | US | |
| 2620:0:f20::/43 | IPv6 | — | US | |
| 2620:0:f40::/42 | IPv6 | — | US |