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Quantum Fiber vs. CenturyLink Internet Providers Compared

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Quantum Fiber Vs CenturyLink

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Rosslyn Elliott

Written by Rosslyn Elliott - Pub. Nov. 10, 2023 / Updated Aug. 6, 2026

You are currently comparing:

Quantum Fiber Vs CenturyLink

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Plans starting at: $45

Popular Package: Up to 1Gbps

Download speeds up to: 8 Gbps

Connection Types: Fiber

Call today & find the best Quantum Fiber internet deals
1-833-440-3323

Plans starting at: $50

Popular Package: CenturyLink internet - Up to 940Mbps.

Download speeds up to: 940 Mbps

Connection Types: Fiber & DSL

Call today & find the best CenturyLink internet deals
1-833-943-6858

Quantum Fiber Staff rating

4.3

Quantum Fiber brings superior internet speeds and reliability at an appealing price.

Quantum Fiber is a fiber-optic internet service originally developed by Lumen Technologies. On February 2, 2026, AT&T acquired Lumen’s Mass Markets fiber-to-the-home business (including Quantum Fiber) in an all-cash deal valued at $5.75 billion. The acquisition included consumer fiber operations in 11 states, adding more than 1 million fiber customers and over 4 million enabled fiber locations to AT&T’s network. Lumen retained its enterprise network infrastructure and copper-based services, while AT&T integrated the acquired fiber assets into its expanding fiber broadband portfolio.

PROS

Symmetrical fiber speeds No data caps or contracts Competitive cost-per-megabit value

Cons

Limited availability Some connections may be only FTTC Multi-gig plans not available in all service areas

CenturyLink Staff rating

3.3

CenturyLink’s DSL internet has wide coverage but slower speeds

CenturyLink is a DSL internet provider owned by a parent company known as Lumen Technologies. Lumen is the seventh-largest ISP in the U.S., based on its combined internet service in both DSL and fiber. Lumen serves a total of about 3 million customers [1]. CenturyLink is the DSL brand owned by Lumen. The fiber brand of Lumen is now known as Quantum Fiber. This review will focus on the CenturyLink DSL half of the Lumen brand. We will cover Quantum Fiber in a separate review, because the two brands provide very different technologies. If your only available internet is CenturyLink, your DSL connection is likely to be slower than if you have cable or fiber. DSL speed can vary widely depending on your neighborhood and even on the wiring in your home. But CenturyLink, like most DSL companies, will charge you the same price for a slow 10 Mbps download speed as for 100 Mbps download speed. It’s luck of the draw, with no price break for slower service. DSL customers just aren’t getting the same kind of value that fiber customers are getting. And that’s one probable reason that Lumen separated its two brands. Now, it should be easy to tell what you’re getting – mostly.  CenturyLink is DSL, and Quantum Fiber is all-fiber. On websites that still mix the two names, though, the speeds of each plan will often be a giveaway. CenturyLink sold half of its DSL network to Brightspeed in 2022. CenturyLink now has a very unusual coverage footprint: think of it as the Western half of the United States, minus California, plus Florida.

PROS

Consistent prices with no built-in price hikes No data caps for DSL plans DSL is sometimes faster than satellite or fixed wireless, depending on the location

Cons

DSL offers little speed for the money compared to fiber or cable DSL speeds vary widely and are sometimes below broadband speed Customer service gets poor reviews from many customers

Quantum Fiber Internet Plans

PlanService TypeDownload SpeedMonthly Price
Up To 8GbpsFiber InternetUp to 8,000 Mbps Only $165
*Offers and availability may vary by location and are subject to change.
Up To 3GbpsFiber InternetUp to 3,000 Mbps Only $70
*Offers and availability may vary by location and are subject to change. Read more
1Gig for $45/mo Limited availability. New customers only. Existing Quantum Fiber households ineligible
Up To 1Gbps Fiber InternetUp to 1,000 Mbps Only $45
*Offers and availability may vary by location and are subject to change.
Up To 500MbpsFiber InternetUp to 500 Mbps Only $50
*Offers and availability may vary by location and are subject to change.
Call today & find the best Quantum Fiber internet deals
1-833-440-3323

CenturyLink Internet Plans

PlanService TypeDownload SpeedMonthly Price
Free Installation! WiFi equipment provided.
CenturyLink Internet - Up To 940Mbps.Fiber InternetUp to 940 Mbps Only $75
*Offers and availability may vary by location and are subject to change.
CenturyLink Internet - Up To 500Mbps.Fiber InternetUp to 500 Mbps Only $50
*Offers and availability may vary by location and are subject to change.
CenturyLink Internet - Up To 100Mbps.DSL InternetUp to 100 Mbps Only $55
*Offers and availability may vary by location and are subject to change.
Call today & find the best CenturyLink internet deals
1-833-943-6858

Quantum Fiber FAQ's

Quantum Fiber is available in 18 states across the U.S., including Arizona, Colorado, Florida, Idaho, Iowa, Minnesota, Montana, Nebraska, Nevada, New Mexico, North Carolina, Oregon, Tennessee, Texas, Utah, and Washington. To find out if Quantum Fiber is available at your address, enter your zip code here or call 1-833-440-3174.
Yes, Quantum Fiber allows you to connect multiple users and devices simultaneously. Whether it's for work, school, or entertainment purposes, you can connect and use multiple devices on the same internet connection.
Yes, Quantum Fiber provides Wi-Fi service. With Wi-Fi, you can enjoy wireless connectivity in your home, allowing you to connect your devices without the need for wired connections. The maximum internet speed available for Wi-Fi may vary depending on your location and your internet plan.
Quantum Fiber's benefits include matching upload and download speeds up to multi-gigabit levels, no data caps, and month-to-month service with no long-term commitments required. Additionally, setup and modem costs are included in your plan at no additional fee.
Yes, Quantum Fiber is excellent for gaming. Its symmetrical speeds and fiber-optic connection deliver low latency and stability for competitive online play. The unlimited data means you won't hit caps during gaming sessions or large game updates.
Plans start at $[prov-lopr nation="yes" provider="quantum-fiber"] for [prov-loprsp nation="yes" provider="quantum-fiber"] Mbps and go all the way up to $[prov-hipr nation="yes" provider="quantum-fiber"] for speeds of [prov-hiprsp nation="yes" provider="quantum-fiber"] Mbps.
Call today & find the best Quantum Fiber internet deals
1-833-440-3323

CenturyLink FAQ's

To order or learn more, call the number on this page or visit BuyCenturyLink.com.
CenturyLink internet is an affordable DSL home internet service that offers unlimited data. It allows you to work from home, shop online, connect multiple users and devices, and stream movies. There is no annual contract, and the service is available in various speed options.
Internet availability may vary depending on your location. To check if CenturyLink internet is available in your area, enter your zip code here at CompareInternet.com. We’ll give you a complete list of providers available in your area.
CenturyLink offers either professional installation or self-installation for your internet service. Professional installation will carry a higher one-time fee but will be guaranteed to fix any issues as soon as possible. Self-installation will be less expensive and not too complicated with their self-install kit.
Yes, CenturyLink allows you to connect multiple users and devices simultaneously. Whether it's for work, school, or entertainment purposes, you can connect and use multiple devices on the same internet connection. Fiber will give you higher speeds than DSL that may work better for multiple devices.
Yes, CenturyLink provides Wi-Fi service. With Wi-Fi, you can enjoy wireless connectivity in your home, allowing you to connect your devices without the need for wired connections. The maximum internet speed available for Wi-Fi may vary depending on your location and your internet plan.
Call today & find the best CenturyLink internet deals
1-833-943-6858