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| CIDR range | Maintainer | Description | Source |
|---|---|---|---|
| 130.77.0.0/16 | MASERGY-MNT | CH2M Hill | LEVEL3 |
| 130.77.0.0/16 | MAINT-AS12075 | Jacobs | RADB |
| 141.159.252.0/24 | MASERGY-MNT | Ch2m Hill Multihoming Block | LEVEL3 |
| 198.91.8.0/22 | MAINT-AS7922 | Comcast Cable Communications, Inc. | RADB |
| 198.91.8.0/24 | MASERGY-MNT | CH2M Hill | LEVEL3 |
| 198.91.9.0/24 | MASERGY-MNT | CH2M Hill | LEVEL3 |
| 198.91.10.0/24 | MASERGY-MNT | CH2M Hill | LEVEL3 |
| 198.91.11.0/24 | MASERGY-MNT | CH2M Hill | LEVEL3 |
| 198.91.12.0/23 | MAINT-AS7922 | Comcast Cable Communications, Inc. | RADB |
| 198.91.12.0/24 | MASERGY-MNT | CH2M Hill | LEVEL3 |
| 198.91.13.0/24 | MASERGY-MNT | CH2M Hill | LEVEL3 |
| 2620:1d7::/36 | MAINT-AS7922 | Comcast Cable Communications, Inc. | RADB |