Summary
| Registry | ARIN |
| Country | US |
| Status | assigned |
| IP Version | IPv4 |
| Allocated | 2015-02-25 |
| Last Updated | 2026-08-26 |
| 172.66.0.0/24 | N/A | 0 | 1 | 1 |
| 172.66.40.0/24 | N/A | 0 | 1 | 1 |
| 172.66.128.0/24 | N/A | 0 | 1 | 1 |
| 172.66.144.0/24 | N/A | 0 | 1 | 1 |
| 172.66.160.0/24 | N/A | 0 | 1 | 1 |
| 172.66.176.0/24 | N/A | 0 | 1 | 1 |
| 172.66.177.0/24 | N/A | 0 | 1 | 1 |
| 172.66.192.0/24 | N/A | 0 | 1 | 1 |
| 172.66.208.0/24 | N/A | 0 | 1 | 1 |
| 172.66.216.0/24 | N/A | 0 | 1 | 1 |
| 172.66.217.0/24 | N/A | 0 | 1 | 1 |