Comcast Cable Communications, LLC CCCH3-4 (NET-50-128-0-0-1) 50.128.0.0 - 50.255.255.255 Comcast Cable Communications, LLC CBC-SFBA-27 (NET-50-250-192-0-1) 50.250.192.0 - 50.250.255.255 Comcast Cable Communications, LLC SFBA-CCCS-12 (NET-50-250-192-0-2) 50.250.192.0 - 50.250.255.255