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Quick Answer: CenturyLink and AT&T are both popular internet choices, but they differ in important ways. This guide compares their speeds, pricing, coverage, data caps, contracts, and customer satisfaction to help you decide which provider is better for your household.
Choosing between CenturyLink and AT&T is a common decision for millions of American households. Both providers offer competitive internet service, but the best choice depends on your specific needs, location, and priorities. This head-to-head comparison examines every important factor to help you make an informed decision.
CenturyLink vs AT&T: Quick Comparison
| Feature | CenturyLink | AT&T |
|---|---|---|
| Technology | Fiber / DSL | Fiber / DSL |
| Max download speed | 940 Mbps | 5 Gbps |
| Starting price | $30/mo | $55/mo |
| Data caps | None (fiber) | None (fiber) |
| Contract required | No | No |
Speed Comparison
Speed is often the first factor people compare, and there are important differences between these providers. CenturyLink offers a range of plans designed to accommodate different household sizes and usage levels. CenturyLink offers fiber plans up to 940 Mbps in select areas.
AT&T offers AT&T Fiber plans from 300 Mbps to 5 Gbps with symmetrical speeds.
A critical speed difference is upload performance. Fiber providers deliver symmetrical upload and download speeds, meaning a 1 Gbps plan gives you 1 Gbps in both directions. Cable providers typically offer upload speeds that are a fraction of download, often 10-35 Mbps regardless of your download tier. This matters significantly for video conferencing, cloud storage, and content creation. For more on this topic, see our upload vs download guide.
Pricing Comparison
Internet pricing involves more than just the advertised monthly rate. When comparing CenturyLink and AT&T, consider the promotional rate versus the standard rate, equipment rental costs, data cap overage fees, installation charges, and the total 24-month cost of ownership. Many providers advertise attractive introductory rates that increase substantially after 12-24 months.
For budget-conscious households, the total cost of ownership over two years provides the most accurate comparison. Factor in all monthly fees, equipment costs, and potential overage charges. Our budget internet guide provides detailed cost-saving strategies.
Reliability and Performance
Real-world reliability depends on the underlying technology, local infrastructure quality, and network congestion patterns. Fiber connections generally deliver the most consistent performance because each customer has a dedicated connection. Cable internet shares bandwidth with neighbors, which can lead to slowdowns during peak evening hours. Independent speed test data from Ookla and the FCC consistently show fiber providers delivering closer to advertised speeds than cable providers.
Customer satisfaction surveys from J.D. Power and the American Customer Satisfaction Index (ACSI) provide additional data points. Fiber services typically score higher than cable in customer satisfaction, driven by more reliable speeds and fewer service disruptions.
Coverage and Availability
Availability is often the deciding factor since you can only choose from providers that serve your address. CenturyLink and AT&T have different coverage footprints. Use our provider search tool to check which services are available at your specific address. In areas where both providers are available, you benefit from competition that typically keeps prices lower and service quality higher.
Data Caps and Unlimited Options
Data caps can significantly impact your experience, especially for households with heavy streaming, gaming, or multiple remote workers. Understanding each provider's data policy is essential before committing. For households using over 1 TB per month, choosing a provider without data caps can save $25-50/month in overage charges or unlimited add-on fees. See our data caps guide for detailed information.
Customer Service Comparison
Customer service quality varies by provider and even by region. Both providers offer phone, chat, and in-person support options. CenturyLink and AT&T have mobile apps for account management, bill payment, speed testing, and basic troubleshooting. When evaluating customer service, consider the availability of local stores or service centers, phone hold times, the quality of online self-service tools, and the provider's track record for resolving issues promptly.
Which Provider Should You Choose?
Choose CenturyLink if: You prioritize affordable pricing, , and you value the widest plan selection.
Choose AT&T if: You prioritize symmetrical speeds and no data caps, you want the lowest latency for gaming, and fiber is available at your address.
AT&T: (855) 452-1829 | AT&T: (855) 452-1829
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Choosing the Right Plan for Your Situation
The right internet plan depends on several factors unique to your household. Start by evaluating how many people will use the connection simultaneously during peak hours, typically evenings and weekends. Each simultaneous user adds to the bandwidth demand. A single user streaming in HD needs about 8 Mbps, while a household of five with multiple streams, gaming, and video calls may need 300-500 Mbps combined.
Beyond speed, consider the total cost of ownership over a two-year period. The advertised monthly rate is just the starting point. Add equipment rental fees ($10-15/month if you do not own your own modem and router), data cap overage risks ($10-15 per 50 GB if applicable), and post-promotional rate increases that typically add $20-40/month after the first year. A plan advertised at $50/month may actually average $75/month over two years when all costs are factored in.
Contract terms also matter significantly for your flexibility. Month-to-month plans let you switch providers, upgrade, or cancel without penalties. Contract plans may offer lower introductory rates but lock you in for 12-24 months with early termination fees if you leave. For most consumers in 2026, the flexibility of no-contract service outweighs the modest savings of a contract plan. Spectrum, AT&T Fiber, Verizon Fios, and T-Mobile all offer competitive no-contract options.
Optimizing Your Internet Experience
Getting the most from your internet connection requires attention to your home network setup, not just your ISP plan. Router placement is the single most impactful factor for Wi-Fi performance. Place your router in a central, elevated location away from walls, microwaves, and other electronic devices. Avoid closets, basements, and corners where signal must travel through multiple walls to reach your devices.
For homes larger than 1,500 square feet, a single router may not provide adequate coverage. Mesh Wi-Fi systems from manufacturers like Google Nest WiFi, Eero, and Netgear Orbi use multiple access points to create seamless whole-home coverage. These systems cost $150-400 but eliminate the dead zones and weak signals that cause frustration in larger homes. For more details, see our home networking guide.
Wired Ethernet connections always outperform Wi-Fi for speed and reliability. For stationary devices like desktop computers, gaming consoles, and smart TVs, running an Ethernet cable from your router provides the fastest and most consistent connection possible. Even with the fastest Wi-Fi 6 router, a wired connection delivers 20-50% better performance due to the elimination of wireless overhead and interference.
Quality of Service (QoS) settings on your router allow you to prioritize certain types of traffic over others. If you work from home, you can prioritize video conferencing traffic to ensure clear calls even when other household members are streaming or downloading large files. Most modern routers provide simple QoS interfaces through their mobile apps, making configuration straightforward even for non-technical users.
Troubleshooting Common Issues
When your internet is not performing as expected, systematic troubleshooting can identify and resolve most issues without a service call. Start by running a speed test at speedtest.net using a wired Ethernet connection to establish your baseline performance. If wired speeds meet your plan expectations but Wi-Fi is slow, the issue is your wireless setup rather than your ISP connection.
Power cycling your modem and router resolves a surprising number of internet issues. Unplug both devices, wait 30 seconds, plug the modem in first, wait for it to fully connect (usually 2-3 minutes), then plug in the router. This process clears cached errors and re-establishes your connection to the ISP network. Many ISPs recommend this as the first troubleshooting step for any connectivity issue.
If problems persist, check your ISP's outage map or social media accounts for reported service disruptions in your area. Large-scale outages require your provider to restore service, and individual troubleshooting will not resolve them. Knowing whether an outage is affecting your area saves time and frustration. If your area is not experiencing an outage, contact your ISP's technical support with your speed test results and troubleshooting history for faster resolution.
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Frequently Asked Questions
Is CenturyLink or AT&T better?
The better choice depends on your priorities. CenturyLink excels in some areas while AT&T has advantages in others. Compare availability at your address, pricing, speed needs, and data cap policies. Generally, fiber providers offer better performance while cable providers offer wider availability.
Is CenturyLink cheaper than AT&T?
Pricing varies by plan tier and location. Compare the total 24-month cost including equipment fees and post-promotional rate increases, not just the introductory price. Use our provider search tool to see current pricing at your address.
Which provider has better speeds?
Fiber providers generally deliver faster and more consistent speeds than cable, especially for upload. However, cable download speeds can match fiber for many plan tiers. The biggest difference is in upload speeds, where fiber offers symmetrical speeds while cable is limited to 10-35 Mbps.
Do either provider have data caps?
Data cap policies vary. AT&T Fiber, Verizon Fios, Spectrum, and Frontier Fiber have no data caps. Xfinity has a 1.2 TB cap with an unlimited option for $30/month. Check each provider's current data cap policy before signing up.
Can I switch from CenturyLink to AT&T?
Yes, you can switch providers at any time if both are available at your address. Check for early termination fees on your current plan, schedule the new installation before canceling the old service to avoid a gap, and return any rented equipment promptly. See our guide on switching providers for detailed steps.
Which provider is better for gaming?
For gaming, lower latency is more important than raw speed. Fiber providers (AT&T Fiber, Verizon Fios, Frontier Fiber) typically offer the lowest latency at 5-15 ms. Cable providers average 15-30 ms, which is still adequate for most gaming. See our gaming internet guide for details.
Disclosure: InternetProviders.ai may earn commissions from partner links on this page. This does not influence our recommendations, which are based on independent research and analysis. See our full terms of use.
Making the Final Decision
Choosing between these providers ultimately comes down to your specific needs and what is available at your address. Consider these key factors when making your final decision:
- Check actual availability: Enter your exact address on each provider's website. Availability can vary block by block, and speeds offered at your location may differ from what is advertised citywide.
- Compare the total cost: Look beyond the promotional price. Factor in equipment rental fees, installation charges, taxes, and the regular price after the promotional period ends. A plan that seems cheaper initially may cost more over a 24-month period.
- Read recent reviews: Service quality varies by region. Check reviews from customers in your specific city or neighborhood, not just national averages. Sites like BroadbandNow and DSLReports offer location-specific reviews.
- Test before committing: If possible, choose a provider that does not require a contract. This gives you the flexibility to switch if the service does not meet your expectations without paying an early termination fee.
- Negotiate: If you already have service with one of these providers, call the retention department and ask for a better rate. Having a competitor's pricing ready gives you leverage in the negotiation.
Key Takeaways
Choosing the right internet service involves balancing speed, price, reliability, and contract terms. The best provider for your household depends on your specific location, usage patterns, and budget. Before committing to any plan, verify availability at your exact address, calculate the total cost including all fees, and read recent customer reviews from your area.
Internet technology continues to evolve rapidly. Fiber networks are expanding into new communities, 5G home internet is becoming more widely available, and federal broadband investments are bringing new options to underserved areas. Even if your current choices are limited, check back regularly as new providers and technologies may become available in your area within the next 12-24 months.
Remember that the advertised price is rarely the full cost. Equipment rental fees, data overage charges, and post-promotional price increases can significantly affect your total expenditure. Use the comparison strategies and negotiation tips in this guide to ensure you get the best possible deal on the internet service that meets your needs.
Network Technology: Fiber, DSL, and What It Means for You
Both CenturyLink (now branded as Quantum Fiber in fiber markets) and AT&T operate dual-technology networks, serving some customers with modern fiber optics and others with legacy DSL. The technology your address receives fundamentally determines your experience, often more than the provider name itself.
CenturyLink's Technology Split
CenturyLink's parent company, Lumen Technologies, has invested aggressively in fiber expansion under the Quantum Fiber brand since 2022. As of March 2026, Quantum Fiber is available to approximately 4.2 million locations across 16 states, with the largest deployments in Minneapolis-St. Paul, Denver, Seattle, Salt Lake City, and Phoenix. Where available, Quantum Fiber delivers symmetrical speeds of 200 Mbps, 940 Mbps, 2 Gbps, and 8 Gbps — the 8 Gbps tier being one of the fastest residential offerings in the country.
However, CenturyLink's DSL footprint still serves millions of customers at speeds ranging from 1.5 Mbps to 100 Mbps. In these areas, the CenturyLink experience bears little resemblance to Quantum Fiber. DSL speeds degrade with distance from the central office, and many CenturyLink DSL customers report actual speeds well below their plan's advertised maximum. CenturyLink has largely stopped actively marketing DSL and in some states has petitioned regulators to discontinue legacy copper service entirely.
AT&T's Fiber Expansion Strategy
AT&T has been the most aggressive fiber builder among major US ISPs, passing approximately 28 million locations with AT&T Fiber as of early 2026. The company targets adding 3-4 million fiber passings per year through 2028. AT&T Fiber plans range from 300 Mbps symmetrical ($55/month) to 5 Gbps symmetrical ($180/month). AT&T has also announced plans to decommission its legacy DSL network by 2029, migrating remaining copper-based customers to fiber or fixed wireless alternatives.
In head-to-head fiber comparisons, AT&T and CenturyLink/Quantum Fiber perform similarly on speed and latency metrics. Both deliver 95-100% of advertised speeds according to FCC Measuring Broadband America testing. The primary differentiators at the fiber tier are pricing, bundling options, and contract terms rather than raw performance.
Pricing, Contracts, and Hidden Costs
Both providers have simplified their pricing in recent years, moving away from the complex promotional-to-regular price structures that once frustrated consumers. However, important differences remain in how each provider structures costs.
CenturyLink/Quantum Fiber Pricing Philosophy
CenturyLink pioneered the "Price for Life" guarantee on its fiber plans, promising that the monthly rate will never increase as long as you maintain service at the same address. This eliminates the common ISP practice of promotional pricing that jumps $20-40/month after 12 months. Current Quantum Fiber pricing: 200 Mbps at $30/month, 940 Mbps at $50/month, 2 Gbps at $70/month, and 8 Gbps at $110/month. No annual contracts are required, and there are no data caps on any tier.
AT&T Fiber Pricing Structure
AT&T Fiber plans currently price at: 300 Mbps at $55/month, 500 Mbps at $65/month, 1 Gbps at $80/month, 2 Gbps at $150/month, and 5 Gbps at $180/month. AT&T does not require annual contracts on fiber plans and has eliminated data caps on all fiber tiers as of 2023. However, AT&T's prices do not carry a lifetime guarantee — the company reserves the right to adjust pricing, though increases have been infrequent and modest ($3-5) when they occur.
The Equipment Cost Factor
CenturyLink includes a Wi-Fi 6E router with all Quantum Fiber plans at no additional charge. AT&T charges a $10/month equipment fee for its All-Fi gateway (Wi-Fi 6E), which is required for AT&T Fiber service — you cannot use your own modem. Over 24 months, this adds $240 to AT&T's total cost, significantly narrowing or eliminating any speed-tier pricing advantage AT&T might appear to have. At the 1 Gbps tier, CenturyLink's all-in cost of $50/month versus AT&T's $90/month ($80 + $10 equipment) represents a $960 savings over 24 months for comparable service.
Customer Experience and Reliability
Choosing between CenturyLink and AT&T isn't just about speeds and prices — the ongoing customer experience, including reliability, support quality, and issue resolution, significantly impacts satisfaction over the life of your service.
Reliability Metrics
AT&T Fiber reports 99.9% network uptime nationally, backed by a service guarantee that credits customers for outages exceeding 4 consecutive hours. CenturyLink's Quantum Fiber service reports similar 99.9% uptime figures, though the company does not offer a formal uptime guarantee with billing credits. In practice, both fiber networks deliver excellent reliability — outages are typically localized and brief, caused by construction damage to fiber lines or equipment failures at distribution points.
The reliability picture changes dramatically for DSL customers of either provider. Both CenturyLink DSL and AT&T DSL (where it still exists) are more susceptible to weather-related outages, line quality degradation, and capacity limitations during peak hours. If your choice is between DSL from either provider, reliability differences will depend more on the specific condition of local infrastructure than on the provider's national network.
Customer Support Comparison
AT&T maintains a broader support infrastructure, including approximately 1,800 retail stores nationwide where customers can receive in-person assistance, exchange equipment, and arrange service calls. CenturyLink/Quantum Fiber operates with a primarily digital-first support model, with phone support, online chat, and a self-service portal but limited physical retail presence. For customers who value in-person support, AT&T holds a significant advantage.
The ACSI 2025 scores reflect these dynamics: AT&T scored 69/100 (above the ISP industry average of 68), while CenturyLink scored 60/100 (below average). However, CenturyLink's score is heavily weighted by legacy DSL customers — Quantum Fiber-specific satisfaction surveys conducted by J.D. Power show scores comparable to AT&T Fiber. The takeaway: on fiber, both providers deliver good customer experiences; on DSL, both struggle with the inherent limitations of aging copper infrastructure.
Our Recommendation
If both CenturyLink/Quantum Fiber and AT&T Fiber are available at your address, CenturyLink's Price for Life guarantee and lower effective monthly cost (due to included equipment) make it the stronger value proposition for most households. AT&T Fiber earns its higher price for customers who prioritize in-person retail support, want the 5 Gbps ultra-premium tier, or plan to bundle with AT&T wireless service for multi-line discounts. If only DSL is available from either provider, we recommend exploring fixed wireless alternatives (T-Mobile, Verizon) before committing, as both providers' DSL services lag significantly behind modern broadband standards.
Sources & Methodology
This guide is based on data from FCC broadband filings, Ookla speed test measurements, U.S. Census Bureau broadband adoption statistics, and verified provider plan details. 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.
Data Sources
- FCC Broadband Data Collection
- U.S. Census Bureau American Community Survey
- USAC Universal Service Fund
- NTIA Internet Use Survey
- Ookla Speedtest Intelligence
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.