10 Best Docsis 3.1 Cable Modem of December 2025

• Compatible with major U S Cable Internet Providers including Cox, Xfinity & others Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers
• DOCSIS 3 1 Cable Modem best for cable internet speed plans up to 1 Gbps
• 32 downstream x 8 upstream DOCSIS 3 0 bonded channels, 2 downstream x 2 upstream OFDM DOCSIS 3 1 channels
• Two 1-Gigabit Ethernet ports capable of link aggregation
• Cable internet service required Does not inlcude Wi-Fi and does not support cable digital voice service

ARRIS

• COMPATIBLE WITH ALL MAJOR CABLE INTERNET PROVIDERS: Including certification by Xfinity by Comcast and COX. NOT compatible with Spectrum, Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service.
• SAVE MONTHLY RENTAL FEES: Model C7800 replaces your cable modem and WiFi router saving you up to $168/yr in equipment rental fees.
• BUILT FOR ULTIMATE SPEED: Best for cable provider plans up to 2 Gigabits speed.
• FAST WiFi PERFORMANCE: Get up to 3000 sq ft wireless coverage and 45 devices connected with AC3200 speed (up to 3200 Mbps).
• VERSATILE CONNECTIONS: 4 Gigabit Ethernet ports and 2 hi-speed USB 3.0 ports give you fast wired connections to your computer, printer, game box, storage drive, and other devices.
• MODEM TECHNOLOGY: Engineered with 32x8 channel bonding and DOCSIS 3.1.
• SAFE & SECURE: Includes parental controls, and supports WEP and WPA/WPA2 wireless security protocols.

NETGEAR

• 3 products in 1: DOCSIS 3 0 Cable Modem, AC1600 dual-band Wi-Fi Router, 2 Port Gigabit Ethernet Router (cable digital voice service not supported)
• Compatible with major U S Cable Internet Providers including Cox, Spectrum, Xfinity & others Cable internet service required Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers
• 16 downstream & 4 upstream channels Best for cable internet service plans up to 300 Mbps Cable internet service required
• Wi-Fi 5 AC1600 dual-band concurrent Wi-Fi Router with 2 Gigabit Ethernet ports
• Setup and manage your network with the SURFboard Manager app

ARRIS

• Certified to work with Xfinity internet & voice service Not certified for use with other cable internet service providers
• DOCSIS 3 1 Cable Modem with 32 downstream x 8 upstream DOCSIS 3 0 channels, 2 downstream x 2 upstream OFDM DOCSIS 3 1 channels
• Two 1-Gigabit Ethernet ports and 2 Telephony ports for Xfinity digital voice service
• Best for Xfinity internet speed plans up to 1 Gbps
• Xfinity internet service required Does not include Wi-Fi

ARRIS

• COMPATIBLE WITH XFINITY INTERNET & VOICE SERVICE: Certified by Comcast for Xfinity. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and non Xfinity voice services
• SAVE MONTHLY RENTAL FEES: Model CM1150V replaces your cable modem saving you up to $150/yr in equipment rental fees
• BUILT FOR ULTIMATE SPEED: Best for cable provider plans up to 2 Gigabits speed
• WORKS WITH ANY WiFi ROUTER: Connect any WiFi router to this modem's ethernet port to support all your wireless devices
• VERSATILE CONNECTIONS: 4 Gigabit Ethernet ports give you fast wired connections to your computer, separate WiFi router, printer, game box, and other devices
• VOICE PHONE SUPPORT: For use with Xfinity Voice service and up to 2 telephone lines with enhanced call features including caller ID, 3 way conference calling, call forwarding and more
• MODEM TECHNOLOGY: Engineered with 32x8 channel bonding, OFDM 2x2, and DOCSIS 3.1.Compatible Operating System:Windows 7,8,10,Vista,XP,2000, Mac OS. Compatible web browser:Microsoft Internet Explorer 5.0 or Later,Firefox 2.0 or later, Safari 1.4 or Later, Google Chrome 11.0 or Later
• MULTI GIG ETHERNET: Link aggregation combines two 1G ports into one 2G port for faster wired ethernet speed

NETGEAR

• Works with Xfinity, Cox, and Spectrum
• Meets DOCSIS 3.1 specs. and backward compatible with DOCSIS 3.0
• 32 downstream and 8 upstream channels
• 2 Gigabit Ethernet ports with link aggregation support
• Support all cable internet speed tiers up to 2Gps (separate router required for WiFi)

NETGEAR

• Support all cable internet speed tiers, up to Gigabit (1000 Mbps) service. Separate router required for Wi-Fi
• Docsis 3. 1 up to 10x faster download speeds than DOCSIS 3. 0. Docsis 3. 1 is OFDM 2x2+ DOCSIS 3. 0 32x8 channel bonding
• Eliminate monthly cable Modem rental fees - up to $156 per year. Meets DOCSIS 3. 1 specifications and is backward compatible with DOCSIS 3. 0 networks
• System Requirements- Cable broadband Internet service, Please check your cable Internet service provider web site for data speed tier compatibility and to ensure it provides DOCSIS 3.1 service, otherwise this modem will only work as a DOCSIS 3.0 modem,Microsoft Windows 7, 8, 10, Vista, XP, 2000, Mac OS, or other operating systems running a TCP/IP network, Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, or Google Chrome 11.0 browsers or higher
• CM1000-1AZNAS is not compatible with: Verizon, AT&T, or CenturyLink. Not compatible with cable bundled voice services

NETGEAR

• COMPATIBLE WITH ALL MAJOR CABLE INTERNET PROVIDERS: Including certification by Xfinity by Comcast, COX, and Spectrum. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service.
• SAVE MONTHLY RENTAL FEES: Model CM1200 replaces your cable modem saving you up to $168/yr in equipment rental fees.
• BUILT FOR ULTIMATE SPEED: Best for cable provider plans up to 2 Gigabits speed.
• WORKS WITH ANY WiFi ROUTER: Connect any WiFi router to this modem's ethernet port to support all your wireless devices.
• VERSATILE CONNECTIONS: 4 Gigabit Ethernet ports give you fast wired connections to your computer, separate WiFi router, printer, game box, and other devices.
• MODEM TECHNOLOGY: Engineered with 32x8 channel bonding, OFDM 2x2, and DOCSIS 3.1.
• MULTI-GIG ETHERNET: Link aggregation combines two 1G ports into one 2G port for faster wired ethernet speed.

NETGEAR

• TOP INTERNET SPEEDS FOR ALL CABLE INTERNET SERVICES - Wirecutter recommends this as the best cable modem for people using Gigabit Internet plans. Built-in DOCSIS 3.1 and DOCSIS 3.0 32x8 capabilities give top Internet speeds for all cable Internet services, from the slowest to the fastest.
• ELIMINATE UP TO 156 DOLLARS PER YEAR IN CABLE MODEM RENTAL FEES. (Savings are shown for Comcast Xfinity and vary by cable service provider.) Approved by Comcast Xfinity and Xfinity X1, Cox, and CableOne for all speeds including Comcast Gigabit services and Cox Gigablast. Not compatible with RCN. No cable modem is compatible with fiber optic, DSL, or satellite services, available from Verizon, AT&T, CenturyLink, Frontier, and others.)
• WORKS WITH ANY WiFi ROUTER YOU LIKE - including Whole Home WiFi or Mesh routers like eero, Google WiFi, and Orbi. This cable modem does NOT have a built-in wireless router or telephone call capability.
• A BROADCOM CHIPSET PROVIDES SECURITY FROM DENIAL OF SERVICE ATTACKS - a 10/100/1000 Gigabit Ethernet port allows connection of any SINGLE device with an Ethernet port including a router, Windows or Mac computer, HDTV, or game station.
• ACTIVE QUEUE MANAGEMENT (AQM) SIGNIFICANTLY REDUCES INTERNET LATENCY - on both DOCSIS 3.1 and 3.0 services. AQM results in faster page loads for all Web traffic and greatly enhances interactive applications like online gaming and video conferencing. The MB8600 also includes a full-band capture digital tuner to enhance speed and save energy.

Motorola

• Model MB7621 is recommended for actual cable Internet service speeds up to 650 Mbps. Wirecutter rates this “the best modem for most people.” A Full-Band Capture Digital Tuner ensures faster, more reliable Internet.
• This cable modem's one Gigabit Ethernet port connects to a WiFi router, computer, HDTV, game station, or streaming video device. Great for use with Whole Home WiFi or Mesh networks like eero, Google WiFi, and Orbi. (This cable modem does not have a built-in wireless router or telephone call capability. The Motorola MG7315, MG7540, MG7550, and MG7700 have a built-in wireless router.)
• Requires cable Internet service.Approved by and for use with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, BrightHouse, CableOne, SuddenLink, RCN, and other cable service providers. ELIMINATE CABLE MODEM RENTAL FEES UP TO 156 DOLLARS PER YEAR.(Savings are shown for Xfinity and vary by cable service provider. No cable modem is compatible with fiber optic, DSL, or satellite services from Verizon, AT&T, CenturyLink, Frontier, and others. Model MB7621 has no phone jack.)
• Setup is fast and easy using the Quick Start guide. Experienced USA-based Motorola customer support specialists are happy to help if you need them. Support is in English or Spanish.
• Attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. A two-year warranty plus rugged lightning and power surge circuits protect your investment. Includes phone and web support by friendly, professional USA-based technical support specialists.

Motorola