Summary
| Registry | ARIN |
| Country | US |
| Status | assigned |
| IP Version | IPv4 |
| Allocated | 1990-01-17 |
| Last Updated | 2026-08-26 |
| 138.1.0.0/24 | N/A | 0 | 1 | 1 |
| 138.1.4.0/24 | N/A | 0 | 1 | 1 |
| 138.1.8.0/24 | N/A | 0 | 1 | 1 |
| 138.1.12.0/24 | N/A | 0 | 1 | 1 |
| 138.1.16.0/24 | N/A | 0 | 1 | 1 |
| 138.1.20.0/24 | N/A | 0 | 1 | 1 |
| 138.1.24.0/24 | N/A | 0 | 1 | 1 |
| 138.1.28.0/24 | N/A | 0 | 1 | 1 |
| 138.1.32.0/24 | N/A | 0 | 1 | 1 |
| 138.1.40.0/24 | N/A | 0 | 1 | 1 |
| 138.1.48.0/24 | N/A | 0 | 1 | 1 |
| 138.1.64.0/24 | N/A | 0 | 1 | 1 |
| 138.1.68.0/24 | N/A | 0 | 1 | 1 |
| 138.1.72.0/24 | N/A | 0 | 1 | 1 |
| 138.1.76.0/24 | N/A | 0 | 1 | 1 |
| 138.1.80.0/24 | N/A | 0 | 1 | 1 |
| 138.1.84.0/24 | N/A | 0 | 1 | 1 |
| 138.1.88.0/24 | N/A | 0 | 1 | 1 |
| 138.1.92.0/24 | N/A | 0 | 1 | 1 |
| 138.1.96.0/24 | N/A | 0 | 1 | 1 |
| 138.1.100.0/24 | N/A | 0 | 1 | 1 |
| 138.1.104.0/24 | N/A | 0 | 1 | 2 |
| 138.1.112.0/24 | N/A | 0 | 1 | 1 |
| 138.1.128.0/24 | N/A | 0 | 1 | 1 |
| 138.1.144.0/24 | N/A | 0 | 1 | 1 |
| 138.1.160.0/24 | N/A | 0 | 1 | 1 |
| 138.1.176.0/24 | N/A | 0 | 1 | 1 |
| 138.1.192.0/24 | N/A | 0 | 1 | 1 |
| 138.1.208.0/24 | N/A | 0 | 1 | 1 |
| 138.1.224.0/24 | N/A | 0 | 1 | 1 |
| 138.1.240.0/24 | N/A | 0 | 1 | 1 |