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Centurylink or Cox? Here's how they compare

Quick Answer

Centurylink is the better choice for most users in 2026. Centurylink delivers fiber internet up to 940 Mbps starting at $50/mo, while Cox tops out at 1 Gbps on Cable from $30/mo. Fiber offers faster uploads, lower latency, and more consistent speeds.

Centurylink and Cox are two of the most searched internet providers in the United States. Below, we compare their plans, pricing, speeds, coverage, and customer satisfaction to help you choose the best option for your home internet needs.

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Centurylink vs Cox: Key Findings

  • Cox is faster (1 Gbps vs 940 Mbps)
  • Cox is more affordable ($30/mo vs $50/mo)
  • Technology: Centurylink uses Fiber/DSL, Cox uses Cable
  • Contracts: Centurylink — no contract; Cox — no contract
  • Data caps: Centurylink — unlimited; Cox — unlimited

Centurylink vs Cox: Side-by-Side

Centurylink vs Cox comparison table
FeatureCenturylinkCox
Starting Price$50/moReference price — verify for your address$30/moReference price — verify for your address
Max Download Speed940 Mbps1 Gbps
Data CapNone (fiber)None
Contract RequiredNoNo
TechnologyFiber/DSLCable

Nationwide prices shown are for new residential customers for 1 year. Multi-Gig speeds in select markets only: Spectrum Internet 2 Gig $80/mo; Spectrum Internet 7 Gig $140/mo. INTERNET OFFER: Limited-time offer; subject to change; new residential customers only (no Spectrum service in past 30 days). Standard rates apply after promo period or service change. Actual speeds (including wireless) vary and are not guaranteed. Activation fee additional; taxes may apply. Gig speeds require a compatible modem; see Spectrum.net/modem for list. Terms and conditions apply, subject to change. Not available in all areas. Restrictions apply. Spectrum Internet® is powered by fiber and connected to the premises by coaxial lines.

CenturyLink, the consumer brand of Lumen Technologies, offers fiber and DSL internet service across 36 states with a Price for Life guarantee. Cox is now Spectrum: following Charter's August 20, 2026 completion of the Cox transaction, Cox internet in the 18 states Cox served is offered under Spectrum's Fiber-Powered Internet pricing and packaging as of September 16, 2026. Spectrum Internet® is powered by fiber and connected to the premises by coaxial lines.

CenturyLink vs Cox: Side-by-Side Comparison
FeatureCenturyLinkCox
Max Speed940 Mbps1 Gbps
Starting Price$50/moReference price — verify for your address$30/moReference price — verify for your address
TechnologyFiber, DSLCable (DOCSIS 3.1), Fiber
ContractsNoNo
Data CapsNoNo

Nationwide prices shown are for new residential customers for 1 year. Multi-Gig speeds in select markets only: Spectrum Internet 2 Gig $80/mo; Spectrum Internet 7 Gig $140/mo. INTERNET OFFER: Limited-time offer; subject to change; new residential customers only (no Spectrum service in past 30 days). Standard rates apply after promo period or service change. Actual speeds (including wireless) vary and are not guaranteed. Activation fee additional; taxes may apply. Gig speeds require a compatible modem; see Spectrum.net/modem for list. Terms and conditions apply, subject to change. Not available in all areas. Restrictions apply. Spectrum Internet® is powered by fiber and connected to the premises by coaxial lines.

CenturyLink vs Cox: Provider Details

CenturyLink and Cox provider details side-by-side
DetailCenturyLinkCox
Primary TechnologyFiber, DSLCable (DOCSIS 3.1), Fiber
Top Speed (Down/Up)940 Mbps1 Gbps
Starting Price$50/mo$30/mo
CoverageRegional — 36 statesRegional — 18 states
ContractNo contractNo contract
Data CapsNoneNone
HeadquartersMonroe, LouisianaAtlanta, Georgia
Notable FeaturesPrice for Life guarantee • No annual contracts • No data caps on fiberNo contracts • No data caps • Free Internet modem

CenturyLink Service & Install

Customer service: Mon-Fri 8AM-6PM CT; 24/7 technical support; online chat available; CenturyLink app for account management

Installation: Self-install available for DSL (modem shipped free). Fiber requires professional installation (free, 2-3 hours). Fiber availability expanding — check address at centurylink.com.

Cox Service & Install

Customer service: Mon-Fri 8AM-8PM, Sat 9AM-6PM local time; 24/7 technical support; Cox app for billing & service management

Installation: Express Connect Kit (self-install): $0 installation fee. Professional Installation: $50 (may be waived). Activation fee additional; taxes may apply.

Plans Compared: CenturyLink vs Cox

Verified monthly pricing and typical download speeds for each provider's residential plans, sourced from FCC broadband label filings where available and otherwise from the provider's published plan pricing. Promotional and address-specific pricing may vary.

CenturyLink plans

CenturyLink internet plans and pricing
PlanSpeedPrice
Simply Unlimited 500 Mbps527 Mbps$50/mo
Simply Unlimited 60 Mbps61 Mbps$50/mo
Simply Unlimited 100 Mbps101 Mbps$55/mo
Simply Unlimited 140 Mbps142 Mbps$55/mo
Simply Unlimited 3 Mbps3 Mbps$55/mo
Simply Unlimited 30 Mbps31 Mbps$55/mo
See all CenturyLink plans & pricing

Cox plans

Cox internet plans and pricing
PlanSpeedPrice
Spectrum Internet 100100 Mbps$30/mo
Spectrum Internet 500500 Mbps$40/mo
Spectrum Internet 1 Gig1 Gbps$60/mo
See all Cox plans & pricing

CenturyLink vs Cox: Side-by-Side (2026)

CenturyLink, the consumer brand of Lumen Technologies, offers fiber and DSL internet service across 36 states with a Price for Life guarantee.

Use our compare all internet providers tool to see how top ISPs stack up side by side.

CenturyLink plan tiers: Simply Unlimited (200 Mbps), Fiber Gigabit (940 Mbps).

Advertised speeds are theoretical maximums. Real-world throughput depends on network congestion, equipment quality, and infrastructure distance. Check FCC Broadband Facts labels for each plan before signing up.

Pricing: CenturyLink vs Cox Plans & Costs

Cox enforces data caps on most plans, while CenturyLink has no data limits.

View the latest CenturyLink plans and pricing to find the best deal for your household.

View the latest Cox plans and pricing to find the best deal for your household.

Technology: Fiber, DSL vs Cable (DOCSIS 3.1), Fiber

CenturyLink delivers internet via Fiber, DSL infrastructure. Cox uses Cable (DOCSIS 3.1), Fiber technology. The difference in underlying technology directly impacts speed consistency, upload performance, and latency.

CenturyLink offers both fiber and DSL service depending on your address. If fiber is available, you get speeds up to 940 Mbps with symmetric uploads. DSL service is slower but reaches more addresses. Check your specific address — the experience varies dramatically between CenturyLink fiber and DSL.

Availability: Where Can You Get Each Provider?

CenturyLink (regional coverage) serves customers in 36 U.S. states. Cox (regional coverage) is available in 18 states. Service area within a state varies by address — always verify availability at your specific location before ordering.

CenturyLink standout features: Price for Life guarantee, No annual contracts, No data caps on fiber.

Installation & Customer Service

CenturyLink: Self-install available for DSL (modem shipped free). Fiber requires professional installation (free, 2-3 hours). Fiber availability expanding — check address at centurylink.com.

CenturyLink support: Mon-Fri 8AM-6PM CT; 24/7 technical support; online chat available; CenturyLink app for account management

Cox support: Mon-Fri 8AM-8PM, Sat 9AM-6PM local time; 24/7 technical support; Cox app for billing & service management

Our Verdict: CenturyLink vs Cox (2026)

Choose CenturyLink if: you want unlimited data with no caps; you need broad availability (36 states). CenturyLink scores 3.5/5 in our editorial review based on 1,678 data points.

Learn more about Cox review and see what they offer in your area.

Learn more about CenturyLink review and see what they offer in your area.

Overall pick: Cox earns our 2026 recommendation with a 3.8/5 rating. Speed goes to Cox, and CenturyLink wins on starting price. Check availability at your address — the best provider is the one that actually serves your home.

Check Availability in Your Area

Availability varies by address. Use our tools to find which providers serve your location:

Frequently Asked Questions

Is CenturyLink or Cox better for gaming?
Which is cheaper, CenturyLink or Cox?
Which provider is better for streaming?

CenturyLink is better for heavy streaming because it has no data caps. Cox enforces data limits that 4K streaming households (using 50-80 GB/week) could hit. Both providers offer enough speed for 4K streaming.

Can I cancel without a fee?

Both CenturyLink and Cox offer month-to-month service with no annual contracts. Cancel at any time without early termination fees. Just return any rented equipment to avoid additional charges.

Is CenturyLink or Cox faster?

Compare maximum download speeds: CenturyLink and Cox offer different speed tiers depending on your location. Check the plan comparison table above for specific speeds. For most households, any plan over 300 Mbps handles streaming, gaming, and video calls without issues.

Frequently Asked Questions

Which is better, Centurylink Internet or Cox Internet?
The best choice depends on your needs. Centurylink Internet may offer wider availability, while Cox Internet may provide faster speeds. Compare plans, pricing, and coverage at your address to determine which is the better fit for your household.
Is Centurylink Internet cheaper than Cox Internet?
Pricing varies by plan, location, and promotions. Centurylink Internet starting prices may differ from Cox Internet introductory rates. Compare current plans including equipment fees, taxes, and contract terms for accurate pricing.
Can I switch from Centurylink Internet to Cox Internet?
Yes, switching providers is straightforward in most areas. Check Cox Internet availability at your address, then schedule installation. Many providers offer deals for new customers switching from a competitor.

Quick Verdict: CenturyLink vs Cox (2026)

Read on for a detailed plan-by-plan comparison, price-per-Mbps analysis, and recommendations based on your usage patterns.

Plan-by-Plan Comparison: Every CenturyLink and Cox Plan

Below is a complete breakdown of every available plan from both providers, including price-per-Mbps calculations so you can evaluate true value at each tier.

Technology Deep Dive: Fiber, DSL vs Cable (DOCSIS 3.1), Fiber

Understanding the underlying network technology helps explain why these two providers perform differently in speed, latency, and reliability tests.

Fiber-optic connections deliver data as light pulses through glass strands, providing the lowest latency (typically 1-5 ms) and symmetric upload/download speeds. Fiber is immune to electromagnetic interference and signal degradation over distance, making it the gold standard for residential internet.

DSL (Digital Subscriber Line) sends data over existing copper telephone wires. VDSL2 achieves speeds up to 100 Mbps at short distances, but performance degrades sharply beyond 5,000 feet from the DSLAM. While DSL is widely available, it is being phased out in favor of fiber in many markets.

CenturyLink delivers service over Fiber, DSL, while Cox uses Cable (DOCSIS 3.1), Fiber. This difference directly impacts upload speeds, latency during gaming/video calls, and how well your connection holds up during peak usage hours.

Price-per-Mbps Analysis: CenturyLink vs Cox

Price-per-Mbps reveals the true cost efficiency of each plan. Lower values mean more bandwidth for your dollar. CenturyLink offers better value at most tiers compared to Cox.

Best value from CenturyLink: Fiber Gigabit at $0.074/Mbps.

Keep in mind that price-per-Mbps is just one metric. Equipment fees, data caps, and installation costs also affect total cost of ownership.

Who Should Choose CenturyLink vs Cox?

Choose CenturyLink If You:

  • Price for life guarantee
  • No data caps
  • No contracts
  • Wide availability
  • Want a provider using Fiber, DSL technology
  • Need service in one of the 36 states CenturyLink covers

Choose Cox If You:

  • No annual contracts
  • Prefer Cable (DOCSIS 3.1), Fiber technology for your household
  • Live in one of the 18 states Cox serves

The Bottom Line: CenturyLink vs Cox

Before signing up, check both providers' availability at your specific address — coverage can vary block by block. Also factor in equipment rental fees, installation costs, and any promotional pricing that expires after 12 months. The best provider is the one that delivers reliable speeds at your address for the price you are comfortable paying long-term.

Additional FAQs: CenturyLink vs Cox

What are the data caps for CenturyLink and Cox?
CenturyLink's contract policy is: No. Cox's contract policy is: No (1-year promo price). Even without contracts, watch for promotional pricing that increases after 12 months. Always calculate the two-year total cost, not just the introductory rate.
Which provider has better upload speeds, CenturyLink or Cox?
CenturyLink offers upload speeds up to 940 Mbps, while Cox reaches 100 Mbps. Upload speed matters for video conferencing, cloud backups, live streaming, and uploading content to social media. Fiber providers typically offer better upload speeds than other technologies.
Can I bundle TV or phone service with CenturyLink or Cox?
Bundling options vary by provider and location. Check each provider's website for current TV, phone, and mobile bundle deals at your address. Bundling can save $10-$30 per month compared to purchasing services separately, but make sure you actually need all the bundled services before committing.
How do installation and equipment fees compare?
Both providers charge installation and equipment fees that are not reflected in advertised monthly prices. Typical installation runs $50-$100 (often waived during promotions), and modem/router rental adds $10-$15 per month. You can reduce costs by purchasing your own compatible modem and router — check each provider's approved equipment list before buying.

Find the Best Internet Provider at Your Address

Availability and pricing vary by location. Enter your ZIP code below to see which providers serve your area, compare current plans, and find exclusive deals near you.

Check availability by ZIP code to see real-time pricing and plans at your specific address.

You can also browse all provider comparisons or read our guide to choosing an internet provider for expert recommendations based on your household's needs.

Related Comparisons & Resources

Market Context

The broadband market concentration in areas served by both CenturyLink and Cox varies significantly. According to FCC broadband deployment data, median household income and population density are key factors in determining which provider offers better value. The BEAD (Broadband Equity, Access, and Deployment) program may expand options in underserved areas where neither provider currently has strong coverage.

Check availability at your address

See which of these providers — and others — actually serve your exact address, with real speeds and pricing from FCC broadband data.

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Check Centurylink Availability

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Check Cox Availability

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Sources & Methodology

This Centurylink vs Cox comparison uses pricing, speed, and coverage data from FCC Broadband Data Collection filings, provider-published broadband nutrition labels, and Ookla speed test measurements. Plans and pricing are verified against each provider's current public offerings. Pricing, speeds, and availability are verified against provider broadband nutrition labels and may vary by location. For a detailed explanation of our data collection and scoring process, see our methodology page.

How We Score Providers

Our analysts rate every provider on a composite 1–5 scale using five weighted criteria, applied consistently across all reviews and comparisons:

  • Price (30%) — advertised plan pricing verified monthly against each provider's broadband nutrition labels.
  • Speed (25%) — advertised tiers cross-checked with third-party real-world speed test data.
  • Reliability (20%) — technology type, uptime signals, and FCC complaint data.
  • Coverage (15%) — FCC Broadband Data Collection availability records.
  • Customer Service (10%) — published satisfaction indices and verified support channels.

Last verified: March 2026. InternetProviders.ai is an independent resource. We may earn commissions from partner links — this does not affect our editorial recommendations. See our methodology for details.