10 Best comcast xfinity approved modems of 2025

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NETGEAR

NETGEAR Nighthawk DOCSIS 3.1 Mid/high-Split Cable Modem (CM3000-1AZNAS) – Approved for Today’s Fastest Speeds - Works With all Cable Providers, Incl. Xfinity, Spectrum, Cox - Cable Plans up to 2.5Gbps
9.9

Exceptional

Our Rating
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Value for Money

2

NETGEAR
NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7 Gbps - Compatible with Xfinity, Spectrum, Cox, and More - Gigabit Wireless Internet
Main highlights

Dual-Band WiFi 6 Performance
Coverage up to 2,500 sq. ft. with 2.7Gbps speed.

Ideal for Cable Providers
Compatible with Xfinity, Spectrum, Cox for plans up to 2Gbps.

Praised for Easy Setup
Quick setup using the Nighthawk app, praised by users.
Key specs
- number of ports:4 Ethernet, 1 USB
- modem type:DOCSIS 3.1
- data rate:32 x 8 channel bonding
- max speed:2.7Gbps
- security type:WPA/WPA2/WPA3
9.8

Exceptional

Our Rating
3

ARRIS
ARRIS (SB8200) - Cable Modem - Fast DOCSIS 3.1 32x8 Gigabit Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more | 1 Gbps Max Internet Speed, 4 OFDM Channels - (No Built-in Wifi)
Main highlights

Superior Connectivity and Speed
The ARRIS SURFboard SB8200 offers 10x faster speeds with DOCSIS 3.1 technology, ideal for streaming and gaming.

Ideal for High-Speed Plans
Perfect for internet plans up to 1 Gbps, ensuring optimal performance for heavy internet users.

Reliability and Performance
Customers praise its reliability and substantial speed improvements over older models.
9.7

Exceptional

Our Rating

9.5
Simple to use

9.3
lasts a long time

8.9
Easy installation
4

ARRIS
ARRIS (S34) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit Cable Modem, for Comcast Xfinity, Cox, Spectrum & More, 2.5 Gbps Max Internet Speeds, 2 Year Warranty - (No Built-in WiFi)
Main highlights

Cost Savings Feature
Own your modem and save up to $168 annually on rental fees.

Ideal Use for High-Speed Plans
Perfect for multi-gigabit internet plans up to 2.5 Gbps.

Praised Setup Ease
Customers appreciate the straightforward setup process using the app.
Key specs
- channel bonding:DOCSIS 3.1
- ethernet ports:2 ports
- max speed:Up to 3.5 Gbps
- dimensions:10.55 x 6.75 x 2.46 inches
- number of ports:N/A
9.6

Exceptional

Our Rating
5

ARRIS
ARRIS (SB8200-RB) - Cable Modem - Fast DOCSIS 3.1 32x8 Gigabit Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more | 1 Gbps Max Internet Speed, 4 OFDM Channels - Renewed
Main highlights

High-Speed Capability
DOCSIS 3.1 modem supports internet speeds up to 2 Gbps, ideal for high-bandwidth activities.

Provider Compatibility
Works with Xfinity, Spectrum, Cox, and other major U.S. providers for seamless integration.

Easy Setup Experience
Customers praise the relatively easy setup process using the SURFboard Central app.
Key specs
- channel bonding:32x8 DOCSIS 3.0
- ethernet ports:Two 1-Gigabit
- max speed:Up to 2 Gbps
- dimensions:1.75 x 5.13 x 5.25 inches
- number of ports:N/A
9.5

Excellent

Our Rating

8.7
Simple to use

8.4
Easy installation

8.0
Temperature control
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6

Hitron
Hitron CODA DOCSIS 3.1 Cable Modem ONLY | Up to 1 Gbps Max Internet Speeds | Certified with Comcast Xfinity, Charter Spectrum, Cox & More | Requires Separate WiFi Router
Main highlights

High Speed Connectivity
DOCSIS 3.1 modem offers 10x faster speeds than DOCSIS 3.0, supporting internet plans up to 1 Gbps.

Versatile Compatibility
Works with any WiFi router or mesh system, ideal for Comcast Xfinity and other major cable providers.

Reliable Performance
Praised for its stability and self-healing capabilities, ensuring smooth connectivity even with ISP fluctuations.
9.2

Excellent

Our Rating

9.9
Easy installation

8.7
worth the money

8.2
Long life
7

Hitron
Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem | 2.5 Gbps Max Internet Speeds | Certified with Xfinity, Charter Spectrum, Cox | 2.5 Gbps Ethernet Cable Modem ONLY | Requires Separate WiFi Router
Main highlights

High-Speed Internet Support
Unlocks internet plans up to 2.5 Gbps, 10x faster than DOCSIS 3.0.

Ideal for Cable Users
Perfect for Comcast Xfinity, Charter Spectrum, and Cox Gigablast users.

Praised for Easy Setup
Effortless installation with ISP activation, praised by customers.
Key specs
- number of ports:1
- modem type:DOCSIS 3.1
- data rate:2.5 Gbps
- max speed:2.5 Gbps
- security type:N/A
9.1

Excellent

Our Rating
8

motorola
Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and Spectrum | for Cable Plans Up to 900 Mbps | DOCSIS 3.0
Main highlights

Fast Reliable Internet
Model MB7621 supports cable Internet speeds up to 650 Mbps with a Full-Band Capture Digital Tuner for enhanced reliability.

Versatile Connectivity
Ideal for connecting to WiFi routers, game stations, and streaming devices, compatible with major cable providers like Comcast Xfinity and Spectrum.

Easy Setup
Customers praise the modem's straightforward installation process, typically taking only 10-15 minutes to complete.
8.8

Very Good

Our Rating

9.3
Easy installation

9.1
worth the money

8.0
Stability
9

ARRIS
ARRIS (G34) - Cable Modem Router Combo - Fast DOCSIS 3.1 Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1 Gbps Max Internet Speeds
Main highlights

High-Speed Connectivity
The ARRIS SURFboard G34 provides ultra-fast streaming and downloading with DOCSIS 3.1 technology and Wi-Fi 6, supporting speeds up to 1 Gbps.

Ideal for Large Homes
Perfect for homes needing extensive Wi-Fi coverage and high-speed internet, compatible with major U.S. cable providers.

Customer Praise for Speed Improvement
Customers consistently praise the significant improvement in internet speed and reliability after upgrading to the ARRIS SURFboard G34.
Key specs
- number of ports:Four 1-Gigabit
- modem type:DOCSIS 3.1
- data rate:3,000 Mbps
- max speed:3 Gbps
- security type:Better security
8.6

Very Good

Our Rating

8.9
User interface

8.7
lasts a long time

8.4
Easy installation
10

ARRIS

ARRIS (G18) - Cable Modem Router Combo - Fast DOCSIS 3.1 Multi-Gigabit WiFi 6 (AX1800), Approved for Comcast Xfinity, Cox, Spectrum & More
8.5

Good

Our Rating

10 Best comcast xfinity approved modems of 2025

1

NETGEAR Nighthawk DOCSIS 3.1 Mid/high-Split Cable Modem (CM3000-1AZNAS) – Approved for Today’s Fastest Speeds - Works With all Cable Providers, Incl. Xfinity, Spectrum, Cox - Cable Plans up to 2.5Gbps

How do we rank?

How do we rank?

Analyzing top stores

2

NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7 Gbps - Compatible with Xfinity, Spectrum, Cox, and More - Gigabit Wireless Internet

3

ARRIS (SB8200) - Cable Modem - Fast DOCSIS 3.1 32x8 Gigabit Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more | 1 Gbps Max Internet Speed, 4 OFDM Channels - (No Built-in Wifi)

9.5

9.3

8.9

4

ARRIS (S34) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit Cable Modem, for Comcast Xfinity, Cox, Spectrum & More, 2.5 Gbps Max Internet Speeds, 2 Year Warranty - (No Built-in WiFi)

5

ARRIS (SB8200-RB) - Cable Modem - Fast DOCSIS 3.1 32x8 Gigabit Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more | 1 Gbps Max Internet Speed, 4 OFDM Channels - Renewed

8.7

8.4

8.0

6

Hitron CODA DOCSIS 3.1 Cable Modem ONLY | Up to 1 Gbps Max Internet Speeds | Certified with Comcast Xfinity, Charter Spectrum, Cox & More | Requires Separate WiFi Router

9.9

8.7

8.2

7

Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem | 2.5 Gbps Max Internet Speeds | Certified with Xfinity, Charter Spectrum, Cox | 2.5 Gbps Ethernet Cable Modem ONLY | Requires Separate WiFi Router

8

Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and Spectrum | for Cable Plans Up to 900 Mbps | DOCSIS 3.0

9.3

9.1

8.0

9

ARRIS (G34) - Cable Modem Router Combo - Fast DOCSIS 3.1 Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1 Gbps Max Internet Speeds

8.9

8.7

8.4

10

ARRIS (G18) - Cable Modem Router Combo - Fast DOCSIS 3.1 Multi-Gigabit WiFi 6 (AX1800), Approved for Comcast Xfinity, Cox, Spectrum & More

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