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Can Cox see my Mac addresses? Do ISPs receive all Mac addresses used in my network?

I wanted to know if Cox can see the Mac addresses in my network. I know they can see IP addresses, but are Mac addresses included? What if I use a VPN?

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  • Does Cox approve or update the firmware of my router?

    Nope, the firmware is stored locally on the router's flash. The router manufacture updates the router support page with the latest firmware. Some router's have automated systems that check the firmware automatically. You may be confusing router firmware with modem firmware, which Cox does control.