Comcast Cable Communications, LLC COMCAST6NET (NET6-2601-1) 2601:: - 2601:FFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF Comcast Cable Communications, LLC MEMPHIS-RPD-V6-2 (NET6-2601-3C0-1) 2601:3C0:: - 2601:3FF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF