Summary
| Registry | ARIN |
| Country | US |
| Status | assigned |
| IP Version | IPv4 |
| Allocated | 1988-09-08 |
| Last Updated | 2026-08-26 |
| 131.18.1.0/24 | N/A | 0 | 1 | 1 |
| 131.18.2.0/24 | N/A | 0 | 1 | 1 |
| 131.18.4.0/24 | N/A | 0 | 1 | 1 |
| 131.18.8.0/24 | N/A | 0 | 1 | 1 |
| 131.18.16.0/24 | N/A | 0 | 1 | 1 |
| 131.18.32.0/24 | N/A | 0 | 1 | 1 |
| 131.18.64.0/24 | N/A | 0 | 1 | 1 |
| 131.18.96.0/24 | N/A | 0 | 1 | 1 |
| 131.18.98.0/24 | N/A | 0 | 1 | 1 |
| 131.18.100.0/24 | N/A | 0 | 1 | 1 |
| 131.18.104.0/24 | N/A | 0 | 1 | 1 |
| 131.18.105.0/24 | N/A | 0 | 1 | 1 |
| 131.18.106.0/24 | N/A | 0 | 1 | 1 |
| 131.18.108.0/24 | N/A | 0 | 1 | 1 |
| 131.18.112.0/24 | N/A | 0 | 1 | 1 |
| 131.18.128.0/24 | N/A | 0 | 1 | 1 |
| 131.18.129.0/24 | N/A | 0 | 1 | 1 |
| 131.18.130.0/24 | N/A | 0 | 1 | 1 |
| 131.18.132.0/24 | N/A | 0 | 1 | 1 |
| 131.18.136.0/24 | N/A | 0 | 1 | 1 |
| 131.18.144.0/24 | N/A | 0 | 1 | 1 |
| 131.18.160.0/24 | N/A | 0 | 1 | 1 |
| 131.18.176.0/24 | N/A | 0 | 1 | 1 |
| 131.18.177.0/24 | N/A | 0 | 1 | 1 |
| 131.18.178.0/24 | N/A | 0 | 1 | 1 |
| 131.18.180.0/24 | N/A | 0 | 1 | 1 |
| 131.18.184.0/24 | N/A | 0 | 1 | 1 |
| 131.18.192.0/24 | N/A | 0 | 1 | 1 |
| 131.18.224.0/24 | N/A | 0 | 1 | 1 |
| 131.18.240.0/24 | N/A | 0 | 1 | 1 |
| 131.18.248.0/24 | N/A | 0 | 1 | 1 |
| 131.18.252.0/24 | N/A | 0 | 1 | 1 |
| 131.18.255.0/24 | N/A | 0 | 1 | 1 |