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| CIDR range | Maintainer | Description | Source |
|---|---|---|---|
| 50.205.7.0/24 | MAINT-AS27506 | NBCUniversal | RADB |
| 50.229.84.0/24 | MAINT-AS27506 | NBCUniversal | RADB |
| 198.55.26.0/23 | MAINT-AS27506 | NBC Sports Group | RADB |
| 198.55.26.0/24 | MAINT-AS7922 | Comcast Cable Communications, Inc. | RADB |
| 198.55.27.0/24 | MAINT-AS7922 | Comcast Cable Communications, Inc. | RADB |