·Time Warner Cable
·Verizon Online DSL
My Comcast meter was accurate. My TWC meter is accurate. My Sprint, T-Mobile and Verizon meters are accurate, or close thereto.
AT&T and Suddenlink have inaccurate meters. Suddenlink no longer charges overages due to this meter inaccuracy. AT&T doesn't either for U-Verse. They'll start charging again when they think they can get away with it...when their meters are accurate.