Cox Internet is shifting to Spectrum branding in former Cox markets, so new customers may see Spectrum offers while existing Cox customers can keep their current plans, pricing and products. Charter completed its transaction with Cox Communications on August 20, 2026, and said Spectrum products, packaging and pricing would be available to former Cox customers beginning in mid-September. Charter confirmed that access on September 16. The Cox name remains useful when checking legacy service and account details, but availability and offers depend on your address and customer status. Charter’s transaction announcement and its former-market launch announcement describe the change.
What Cox Internet offers now
Cox’s residential plans range from Go Fast, advertised at up to 100 Mbps, to Go Beyond Fast, advertised at up to 2 Gbps where available. Plan names, prices and offers may change as Spectrum service rolls out in former Cox markets. For a particular home, an address check—not a general plan list—determines which tiers and network options are offered. Cox’s residential internet page lists its plans and availability process.
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How much does Cox Internet cost?
A Cox configuration page displayed the following promotional examples: each price applied for 12 months, followed by the listed standard monthly rate. These are dynamic-page examples, not guaranteed or universal offers.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstall| Advertised tier | Example monthly price for first 12 months | Example monthly price afterward |
|---|---|---|
| 100 Mbps | $30 | $50 |
| 500 Mbps | $40 | $85 |
| 1 Gig | $60 | $105 |
| 2 Gig | $80 | $125 |
Before ordering, enter your service address and read the checkout disclosures for the offer’s eligibility, promotional duration, post-promotion rate, equipment charges, taxes, surcharges and other fees. Cox says pricing may vary by location, account features, discounts and term agreements; not all services are available everywhere. Its listed prices exclude taxes, surcharges, certain equipment, usage-based charges and other fees. Cox’s plan information also notes that prices and availability are subject to change.
#1 Best Overall
- ⚠️ CABLE INTERNET ONLY - NOT COMPATIBLE WITH: Fiber (Verizon FiOS, AT&T), DSL, Satellite, or Fixed Wireless. ONLY works with cable providers like Xfinity, Spectrum, Cox. Verify your internet type BEFORE purchase.
- 🚫 NO WiFi INCLUDED - ROUTER REQUIRED: This is a modem ONLY. You MUST buy a separate WiFi router to get wireless internet. Without a router, only ONE device can connect via Ethernet cable. This does NOT replace your current WiFi router.
- 🔌 CABLE INTERNET REQUIRED: Works EXCLUSIVELY with cable internet service (DOCSIS) from providers like Xfinity, Spectrum, or Cox. Will NOT work with fiber (Verizon FiOS, AT&T), DSL, satellite, or fixed wireless internet. Contact your ISP to confirm compatibility BEFORE purchasing.
- 🚀 MULTI-GIG PERFORMANCE: Supports internet plans up to 2.5 Gbps with 2.5 Gbps Ethernet port. Designed for plans 1 Gbps and faster from certified providers: Xfinity (up to 2.33 Gbps), Spectrum (1 Gbps), Cox (2 Gbps). Verify your plan speed and provider compatibility.
- 💡 SETUP REQUIREMENTS: You need: (1) Cable internet service, (2) Separate WiFi router with 2.5 Gbps port for full speeds, (3) ISP activation. This modem cannot create WiFi networks or connect multiple devices without additional equipment.
How fast is Cox Internet?
The plan figures are advertised maximums, not a promise of the speed a device will experience in the home. Cox says actual performance can vary with equipment, conditions inside the home, the number of users and the service area. Compare upload and download speeds separately; a high advertised download rate does not establish an equally high upload rate. No independent in-home performance result is established here. Cox explains its speeds and network in its residential internet information.
Is Cox Internet fiber?
Cox describes its network as fiber-powered, but that does not mean every customer receives fiber all the way to the home. In the common configuration, fiber runs to a neighborhood node and coaxial cable connects the node to most homes. Cox Fiber, with fiber delivered directly to the home, is available only in select areas. Use the address checker to see whether a fiber-to-the-home connection or a particular speed tier is offered at your location.
Rank #2
- ⚠️ COAXIAL CABLE INTERNET ONLY - NOT FIBER: This modem works ONLY with Internet delivered through coaxial cable (the round cable with screw-on connector). Even if you have Xfinity, Spectrum, or Cox service, verify you have their CABLE internet service, NOT their fiber optic service. Check your wall connection before purchasing. Will NOT work with fiber internet (Verizon FiOS, AT&T Fiber, Google Fiber), DSL, satellite, or 5G home internet. Verify your internet type BEFORE purchasing.
- ⚠️ NO WiFi, NO Voice, NO Router Features: This device ONLY connects to your cable line and provides ONE Ethernet port. It does NOT create WiFi networks, has NO phone/voice capabilities, and cannot connect multiple devices without a separate WiFi router.
- 🔧 REQUIRED FOR SETUP: (1) Cable internet service (not fiber), (2) Separate WiFi router with 2.5 Gbps port for full speeds, (3) ISP activation call. Without a router, you can connect only ONE device via the single Ethernet cable included.
- 💰POTENTIAL RENTAL FEE SAVINGS - While some providers have reduced or eliminated modem rental fees, this modem can still provide cost savings and performance benefits. Check with your provider about current rental fees before purchasing.
- DOCSIS 3.1 TECHNOLOGY - Supports cable internet speeds UP TO 1 Gbps with advanced DOCSIS 3.1 performance. Perfect for streaming, gaming, and multiple devices when paired with your WiFi router.
Does Cox Internet have a data limit or overage charges?
Cox Communications’ 2026 residential materials state that plans include 1.25 TB (1,280 GB) of data per month. Its data information says additional data options are available, and that usage beyond the included allowance is charged in 50 GB blocks at $10 per block, with overage charges capped at $100 per month. Unused data does not roll over. Because applicable terms and options can change, check the current disclosure for the plan and address before ordering. Cox’s data-usage information explains the allowance and charges.
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What equipment will you need?
Cable Internet
Cox cable service requires a Cox-approved DOCSIS 3.0-or-higher cable modem compatible with your subscribed tier. You may be able to supply an approved modem yourself; confirm the model against Cox’s current compatibility list and the speed tier before buying. A search such as “Cox-compatible cable modem” can help find candidate devices, but compatibility should be verified with Cox rather than assumed from a product listing. Cox’s certified modem list provides compatibility information.
Rank #3
- ⚠️ CABLE INTERNET ONLY - This modem works ONLY with cable internet providers (Xfinity, Spectrum, Cox). NOT compatible with fiber internet services including AT&T Fiber, Verizon Fios, Frontier Fiber, Google Fiber, or CenturyLink Fiber. Check with your ISP to confirm you have cable (coaxial) service before purchasing.
- 📞 DATA ONLY - NO PHONE SERVICE - This modem does NOT support telephone or voice service of any kind. If your internet plan includes phone service or you need VoIP calling, you must purchase a separate voice-capable modem or VoIP adapter. This device handles internet data only.”
- 🚀 MULTI-GIG PERFORMANCE: Supports internet plans up to 2.5 Gbps with 2.5 Gbps Ethernet port. Designed for plans 1 Gbps and faster from certified CABLE providers: Xfinity (up to 2 Gbps), Spectrum (1 Gbps), Cox (2 Gbps). NOT compatible with fiber internet services. Verify your plan speed and provider compatibility.
- 🔌 MODEM ONLY - NO WIFI INCLUDED - This device is a cable modem with ONE Ethernet port only. It does NOT provide WiFi or wireless connectivity. You MUST connect your own separate WiFi router to this modem to create a wireless network. This is not an all-in-one gateway or combo unit.
- ⚡ DOCSIS 3.1 TECHNOLOGY: Latest cable standard with 32x8 channel bonding for reliable multi-gig speeds. Backward compatible with DOCSIS 3.0 networks. Eliminates monthly modem rental fees (typically $14-20/month). For CABLE internet only - verify compatibility with your cable provider.
Cox Fiber
For a fiber-to-the-home installation, Cox installs an optical network terminal (ONT), which serves as the modem. You still need a router or gateway to distribute the connection around the home. A cable modem is not the appropriate replacement for the ONT on this type of installation. Cox’s equipment information distinguishes the equipment used for its connections.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should you compare before choosing a provider?
Compare providers for the exact service address, not only by headline download speed. Check the full monthly cost during any promotion and afterward, plus equipment costs, taxes and other charges. Also compare upload and download rates, whether the connection is fiber-to-the-home or coax, data allowances and overage or unlimited-data terms, equipment requirements, contract and cancellation rules, and eligibility. Those details can differ by location and offer, so confirm them in each provider’s address-specific checkout information.
Quick Recap
Best Value
- CABLE INTERNET AND WIFI MADE FOR YOUR HOME: This two-in-one cable modem and WiFi router puts every setting in your hands, from your WiFi names and passwords to how your network runs, so it works the way your household needs.
- APPROVED FOR YOUR PROVIDER AND PLAN: Works with Xfinity internet plans up to 800Mbps and Cox plans up to 500Mbps. Not compatible with Verizon, AT&T, CenturyLink, DirecTV, DISH, or bundled voice plans. ISP activation required after setup.
- GET THE FULL SPEED OF PLANS UP TO 800 MBPS: DOCSIS 3.0 delivers plenty of speed for HD and 4K streaming, online gaming, and video calls across your home. Actual speeds vary by plan and provider.
- AC1900 WIFI COVERAGE FOR THE WHOLE HOME: Stay connected in every room with dual-band AC1900 WiFi covering up to 1,800 sq ft and Beamforming+ for stronger signal to mobile devices. Real-world coverage depends on home size, layout, and building materials.
- WIRED CONNECTIONS FOR YOUR FASTEST DEVICES: Four Gigabit Ethernet ports keep gaming consoles, desktops, and streaming devices hardwired for the lowest latency and the most stable connection in your home.
Rank #4
- Save monthly rental fees: Model CM500 replaces your cable modem, saving you up to $168/yr in equipment rental fees.
- Speeds by carrier plans: Xfinity (up to 200Mbps), Cox (up to 150Mbps).
- Works with any wifi router: Connect any WiFi router, separate unit, to this modem's Ethernet port to support all your wireless devices.
- Ethernet connections: 1 Gigabit Ethernet port connects to your computer or separate WiFi router.
- Modem technology: Engineered with 16x4 channel bonding and DOCSIS 3.0.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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