NETGEAR Nighthawk AX2700 Router with 32 x 8 DOCSIS 3.1 Cable Modem Black CAX30S-100NAS - Best Buy
NETGEAR DOCSIS 3.1 Gigabit Cable Modem. Max download speeds of 6.0 Gbps, For XFINITY by Comcast, Spectrum, and Cox. Compatible with Gig-Speed from Xfinity (CM1000) - Walmart.com
ARRIS SURFboard DOCSIS 3.1 Cable Modem & Dual-Band Wi-Fi Router for Xfinity and Cox service tiers Black SBG8300 - Best Buy
Amazon.com: NETGEAR Cable Modem CM400 - Compatible with all Cable Providers including Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 100 Mbps | DOCSIS 3.0, Black, 8x4 Cable Modem (CM400) : Electronics
Cox Compatible Modems | Should You Rent or Buy a Modem?