Summary
| ASN | AS2907 Research Organization of Information and Systems, National Institute of Informatics |
| BGP | 163.51.0.0/16 |
| Registry | APNIC |
| Country | JP |
| Status | assigned |
| IP Version | IPv4 |
| Allocated | 1992-07-24 |
| Last Updated | 2026-08-26 |
| 163.51.161.0/24 | N/A | 0 | 1 | 1 |
| 163.51.162.0/24 | N/A | 0 | 1 | 1 |
| 163.51.163.0/24 | N/A | 0 | 1 | 1 |
| 163.51.164.0/24 | N/A | 0 | 1 | 1 |
| 163.51.165.0/24 | N/A | 0 | 1 | 1 |
| 163.51.166.0/24 | N/A | 0 | 1 | 1 |
| 163.51.167.0/24 | N/A | 0 | 1 | 1 |
| 163.51.168.0/24 | N/A | 0 | 1 | 1 |
| 163.51.169.0/24 | N/A | 0 | 1 | 1 |
| 163.51.170.0/24 | N/A | 0 | 1 | 1 |
| 163.51.171.0/24 | N/A | 0 | 1 | 1 |
| 163.51.172.0/24 | N/A | 0 | 1 | 1 |
| 163.51.173.0/24 | N/A | 0 | 1 | 1 |
| 163.51.174.0/24 | N/A | 0 | 1 | 1 |