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| CIDR range | Maintainer | Description | Source |
|---|---|---|---|
| 52.128.24.0/22 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 52.129.48.0/20 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 64.186.14.0/23 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.80.0/21 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.80.0/24 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.81.0/24 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.82.0/24 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.83.0/24 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.84.0/24 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.85.0/24 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.86.0/24 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 147.92.87.0/24 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 199.119.248.0/22 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 199.247.80.0/22 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 206.166.204.0/22 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 206.190.216.0/22 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 2604:2d40::/32 | MAINT-AS23520 | COLUMBUS NETWORKS TRANSIT CUSTOMERS | RADB |
| 2604:2d40::/32 | MNT-DMWIR | DMwireless | ARIN |