NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi

The NETGEAR Nighthawk CAX30 combines a DOCSIS 3.1 cable modem and an AX2700 WiFi 6 router into a single housing. Designed specifically for US cable internet customers, it eliminates the need for separate networking boxes while handling modern, high-speed cable plans. It is certified for major providers, supporting Xfinity plans up to 800Mbps as well as Spectrum and Cox plans up to 1Gbps.

On the wireless side, the integrated dual-band AX2700 router delivers coverage for areas up to 2,000 square feet and handles over 25 simultaneous devices. DOCSIS 3.1 OFDMA technology helps maintain steady performance and response times during peak household hours when multiple users are streaming or gaming. For fixed setups like desktop PCs and gaming consoles, four Gigabit Ethernet ports on the back provide low-latency wired connections.

Network configuration and day-to-day management run through the Nighthawk app on iOS or Android. From the app, you can follow guided setup steps, run speed tests, manage network settings, pause access for specific devices, and configure guest networks. Built-in network safeguards include WPA3 encryption, firewall defense, and denial-of-service prevention. NETGEAR also includes 90 days of complimentary Expert Help alongside a 30-day trial of NETGEAR Armor security.

Compatibility is strictly limited to US cable internet networks. It cannot be used with fiber, DSL, or satellite providers such as Verizon, AT&T, CenturyLink, DirecTV, or DISH, and it does not support bundled voice plans. You will also need to complete an activation step with your cable provider after physical setup, and keeping NETGEAR Armor active beyond the 30-day trial requires an extra subscription.

Verdict: The NETGEAR CAX30 is an ideal choice for households looking to streamline their setup with a single, high-performance modem and router unit for US cable providers like Spectrum, Cox, or Xfinity. It delivers fast WiFi 6 coverage and strong wired connectivity, provided you do not require landline telephone service or non-cable internet.

A great fit if you:

• Use Xfinity, Spectrum, or Cox cable internet and want a single device for modem and WiFi duties.
• Live in a home up to 2,000 square feet with around 25 connected wireless devices.
• Need four dedicated Gigabit Ethernet ports for wired gaming setups or desktop computers.
• Want mobile app tools to manage guest access, pause devices, and monitor network speeds.

Consider something else if you:

• Use internet services from Verizon, AT&T, CenturyLink, DISH, or DirecTV.
• Subscribe to an internet plan bundled with landline telephone service.
• Rely on non-cable internet connections outside of standard US cable systems.

Which internet service providers work with this device?
The CAX30 is approved for US cable providers, including Xfinity plans up to 800Mbps, and Spectrum or Cox plans up to 1Gbps. It does not work with Verizon, AT&T, CenturyLink, DirecTV, DISH, or bundled voice plans.

How much space does the wireless signal cover?
The built-in dual-band AX2700 WiFi 6 router covers areas up to 2,000 square feet and supports 25 or more connected devices, though real-world range varies by layout and construction materials.

Do I need to pay extra for security and technical support?
Basic security features like WPA3 encryption and firewall protection are built in, and you receive 90 days of free Expert Help. The advanced NETGEAR Armor security package includes a 30-day free trial, after which a separate subscription is required.