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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 Oct. 9, 2024

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Quantum Fiber Vs CenturyLink

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Plans starting at: $50

Popular Package: Up to 8Gbps

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 new, all-fiber brand owned by parent company Lumen Technologies. Lumen is the seventh-largest ISP in the U.S., based on its combined internet service of both all-fiber internet and DSL. In total, Lumen serves about 3 million customers [1]. Quantum Fiber is the all-fiber brand of Lumen. A second DSL-based brand also owned by Lumen is known as CenturyLink. We will review CenturyLink’s DSL service separately, as the two brands are very different in what they offer customers. Quantum Fiber is a very strong choice for internet service that earns good customer satisfaction ratings. If you sign up for Quantum Fiber, you’re going to get lightning-fast speeds and reliable service. Quantum Fiber offers clear, low pricing for gigabit fiber speeds that run up to 8000 Mbps. Fiber speeds will provide you with an internet connection that can handle any use you want from a home internet connection, including heavy streaming and gaming.

PROS

Blazing-fast fiber speeds No data caps Low monthly prices

Cons

Limited availability in rural areas Some connections may be only FTTC Fiber buildout takes time
Call today & find the best Quantum Fiber internet deals
1-833-440-3323

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

Quantum Fiber Pricing

4.5

Great prices for Quantum Fiber plans up to 960 Mbps

Your prices will be good for Quantum Fiber. The first-tier price for all-fiber service will be $50/month for 500 Mbps. With any of the Quantum Fiber plans, you will get the use of a 360 Wi-Fi router for free. Quantum Fiber has no data caps and no required contracts. That means you won’t run into unexpected data overage charges or early termination fees. We like this simple, affordable pricing for fast fiber speeds. It's one of the best deals you’ll find on fiber internet.
Call today & find the best Quantum Fiber internet deals
1-833-440-3323

CenturyLink Pricing

3.5

CenturyLink DSL charges high prices for widely varying speeds

DSL is not one of the faster internet technologies on the market. Usually, DSL customers sign up for their plans because there is no cable or fiber internet in their areas. And that can be a valid choice if DSL will give you better performance than satellite internet, though you have to evaluate that on a case-by-case basis. Many times, DSL plans are good options for customers in rural areas. CenturyLink plans are no exception to the general qualities of DSL. You will generally pay around $50 for your DSL package, whether you get 10 Mbps download speed or whether you are lucky enough to get 100 Mbps download speed (very unusual for DSL and true for only 28% of CenturyLink DSL customers) [2]. In better news, CenturyLink’s DSL plans are free of data caps. So, despite the fact that CenturyLink’s DSL prices are high for the speeds, at least you won’t have unexpected data overage charges.
Call today & find the best CenturyLink internet deals
1-833-943-6858

Quantum Fiber Reliability and Performance

4.5

All-fiber internet from Quantum: the latest and greatest technology

Quantum Fiber uses the newest internet technology available. Their fiber-optic lines send data using light signals instead of electricity, and that’s why fiber is so much faster than any other kind of internet technology. An all-fiber connection will give you symmetrical speeds and enough bandwidth to handle any internet activities you choose. If you get a gigabit fiber plan, you can have up to 10 devices doing heavy streaming or real-time games online, and you will still have smooth performance. In some cases, though, Quantum Fiber advises that it may need to run Fiber-to-the-Curb (FTTC), with the last few feet of line to your house connected with coaxial cable. This is important, because even those few feet of coaxial cable will slow your upload speeds. Most of the time, that will not be the case, and you will get the all-fiber connection known as Fiber-to-the-Home (FTTH). But it is important to understand the difference in performance just in case you’re in that small minority that will get an FTTC fiber connection. Even an FTTC connection may still be the fastest internet in your area, though, and a Fiber-to-the-Home connection will definitely be your fastest choice.
Call today & find the best Quantum Fiber internet deals
1-833-440-3323

CenturyLink Reliability and Performance

3.0

“But it was so fast in the ‘90s!” DSL shows its age in many locations

CenturyLink DSL uses one of the oldest internet technologies: copper cables originally designed as telephone wire. Only 65% of CenturyLink’s DSL achieves speeds over 25 Mbps, or what the FCC calls “high-speed” internet.  85% of the CenturyLink DSL network is above 10 Mbps. That means a good 15% of CenturyLink’s DSL customers have very slow connections below 10 Mbps [3]. If DSL gives you under 10 Mbps download speed and only 1 Mbps upload speed, you won’t be able to play real-time games online with any kind of reliability. You may also experience glitching if multiple people stream or videoconference at the same time. To be fair, some DSL connections will give you faster speeds. 28% of CenturyLink customers will get 100 Mbps download, and that speed will considerably improve your performance. But if you are considering ordering CenturyLink DSL, make sure you know what your other options are. You can test your actual speed here to see what kind of performance your current internet connection is giving you.

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

Quantum Fiber Equipment, Installation and Bonus Features

4.0

Get free use of a  360 Wi-Fi mesh router or use your own router

If you order a fiber plan from Quantum Fiber, both your equipment and installation fee will be included free of extra charge. Keep in mind that equipment fees and prices do change with various promotions, so make sure you check with your customer support rep on current fees when you call. If you use the free router included with your Quantum Fiber plan, you will get their 360 Wi-Fi system. 360 Wi-Fi is a mesh network, which is much more sophisticated than a single modem/router [2]. You will be able to set up extra Wi-Fi Pods to ensure seamless coverage of your entire space, which is especially helpful if you live in a large home or one with thick walls. You will also have the option to use your own router. The only drawback is that Quantum Fiber tech support cannot give service or information for your personal router the way they can support their own equipment.
Call today & find the best Quantum Fiber internet deals
1-833-440-3323

CenturyLink Equipment, Installation and Bonus Features

3.5

Option to use your own modem/router or self-install your connection

With the CenturyLink DSL plan, there’s a $15 a month modem/router rental fee, which is on the high end of equipment fees. You can avoid the modem/router fee by buying your own. And that might not be a bad plan, given that you will make up the price of a typical modem/router in a year or less. You may have to pay for a professional installation, which is usually a one-time fee of $99. Fortunately, in many places you may also have the option to self-install for $15. It depends whether there is still a working CenturyLink DSL connection in your home.
Call today & find the best CenturyLink internet deals
1-833-943-6858

Quantum Fiber Experience & Support

4.0

Quantum Fiber earns high customer satisfaction ratings

Because the split in branding between Quantum Fiber and CenturyLink DSL is still very recent, we have to interpret customer satisfaction rankings that were previously based on the name “CenturyLink” for both brands. Customer satisfaction is much higher for Quantum Fiber than for the DSL provided by CenturyLink. The American Customer Satisfaction Index shows that split in results by dividing “CenturyLink” specifically into fiber and DSL. Fiber (aka, Quantum Fiber) ranks 16 points higher than the DSL service [3]. For Quantum Fiber, these customer satisfaction rankings tell the story clearly. You are likely to have a great internet experience with Quantum Fiber. To avoid confusion, be aware that there is still a certain amount of online cross-marketing between the two companies. Pay attention to the speeds available, whether your internet source labels it “Quantum Fiber” or “CenturyLink.” If the speed is above 200 Mbps, it is a Quantum Fiber product. If the speed is 100 Mbps or below, it is CenturyLink DSL. Overall, we highly recommend Quantum Fiber for its top-of-the-line speeds and reliability, great pricing, and good customer satisfaction ratings.
Call today & find the best Quantum Fiber internet deals
1-833-440-3323

CenturyLink Experience & Support

3.0

CenturyLink runs below average in some satisfaction rankings

CenturyLink’s customer satisfaction rankings vary widely by region on the J.D. Power survey [3]. In the North Central region, CenturyLink ranks above average. In the West, CenturyLink ranks slightly below average, and in the South, CenturyLink is second from last in customer satisfaction. The North Central and West regions where CenturyLink/Quantum Fiber rank higher are also the regions in which Quantum Fiber provides most of its fiber access. The South only includes one state with fiber internet coverage, which means most of that low customer satisfaction rating is based on CenturyLink’s DSL. The American Customer Satisfaction Index confirms that split in results by dividing “CenturyLink” specifically into fiber and DSL. Fiber ranks 16 points higher than the DSL service [4]. For CenturyLink and Quantum Fiber, these customer satisfaction rankings tell the story clearly. CenturyLink’s DSL service is not as likely to please you. However, be aware that there is a certain amount of online cross-marketing between the two companies. So, if CenturyLink says they are able to sell you “fiber” as they seem to imply on their homepage, all that means is that they’re going to send you to a Quantum Fiber plan if your address has fiber availability.

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

Quantum Fiber FAQ's

To order or learn more, call the number on this page or visit BuyCenturyLink.com.
No, but both are owned by the same parent company, Lumen. Quantum Fiber is all-fiber internet with super-fast, symmetrical speeds and unlimited data. CenturyLink internet is an affordable DSL home internet service that offers unlimited data. Both types of internet allow you to work from home, shop online, connect multiple users and devices, and stream movies.
Internet availability may vary depending on your location. To check if CenturyLink DSL or Quantum Fiber 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.
Yes, both CenturyLink and Quantum Fiber allow 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, 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.
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

Quantum Fiber Accolades

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

Quantum Fiber Internet Plans

PlanService TypeDownload SpeedMonthly Price
Free Equipment & Free Installation!
Up To 8GbpsFiber InternetUp to 8,000 Mbps Only $165
*Offers and availability may vary by location and are subject to change.
Free Equipment & Free Installation!
Up To 3GbpsFiber InternetUp to 3,000 Mbps Only $100
*Offers and availability may vary by location and are subject to change.
Free Equipment & Free Installation!
Up To 940MbpsFiber InternetUp to 940 Mbps Only $75
*Offers and availability may vary by location and are subject to change.
Free Equipment!
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 Customers Review

4.5
Pricing
4.5
4.5
Reliability & Performance
4.5
4.0
Equipment, Installation & Features
4.0
4.0
Customer Experience & Support
4.0
4.3
Overall Rating
4.3
Russell Berkley
1.0
from Littleton, CO on August 2025
PSA. Do not work with Quantum Fiber it it is an option near you. I currently have CenturyLink ($65 for gigabit). I'm moving now, and I'm being forced to Quantum Fiber (Same company) instead. They jacked up their prices nearly 100% to $55 plus equipment rental for 500 down. It gets worse. I bite the bullet and get it because it's still cheaper than comcast bs. I schedule the install a week out before I'm officially moving (I work from home, internet is vital). 24 hours before the appointment they delay it with no explanation. 3 days later and 3 times contacting them, I have not been given a reschedule or explanation for the delay. This is the scummiest company I've ever encountered and it's not a contest. It has taken me hours to get to the point where one of their reps will actually cancel the account. It's all, 'oh would you like $25 bucks and no information'
Billie T
1.3
from Hooper, UT on August 2025
If I could give 0 stars I would, they “chose” my backyard to install the main box in, destroyed a main sprinkler line, played the “blame game” about who broke it so nobody ever reimbursed us for fixing it, they are CONSTANTLY demanding access to my backyard to get to the box. My husband let one of their salesman talk him into getting their service (he didn’t realize they are directly tied to Century Link, so the box in the backyard IS there’s), the salesman outright lied to my husband stating that “no they wouldn’t need access to our backyard for installation and that the box isn’t “theirs” when in fact it is and the install went not only to that box, but they had to bury a line across my entire back yard, drill holes in my house, and had no regard to the plants they were stepping all over in my flowerbed while doing the work. I am currently looking for a different provider so I can cancel them and ship their stuff back. The service goes down no less than 3 times a day, the speed is worse than slow, their IT services provide nothing but excuses. We have had them less than a month and I refuse to stay, I guess you get what you pay for, although the price is low the quality is lower than low. If you are considering Quantum Fiber all I can say is RUN don’t walk away from them and go with absolutely any other provider.
Clark E
1.0
from Loveland, CO on August 2025
Worst service ever. Their installation is a joke. They have no regard for a neighborhood,. They just barge in, take over, ruin yards, install overhead lines with no care, concern or common sense. Based on other reviews of how good their service is, and previous CenturyLink experience, I would never do business with Quantum.
Finn G
1.3
from Arvada, CO on July 2025
Worse than Comcast and that's hard to do, we do not think there is much (Dumpy Trump) worse than this corp. Everything goes pretty much as expected until your hardware fails. then watch out. They will play every game in the book from no shows, but I knocked but no one answered, its a no show, CYA to get this. 19+ days no internet, finally the dog rats out the clown coming up the drive, and Quantum tell me I have to go to the house where their equipment is, and make an appointment with that homeowner for Quantum to appear for repair, I do not work for them also I have not the slightest idea which house (over there) he talking about, I do not know those folks. Also I do not make up this service persons schedule, I do not know his supervisor WHAT THE HELL????? Why can't he do this, because he F---- lazy and stupid. We quite, took shit off the wall and sent back, never to trust this crap corp again. Now we are back with Comcast and hating every minute of it. A city the size of Denver and the best they can offer are the two crappiest providers on the planet. We have tried there are just no good options. But Quantum is the worst.
Nichole S
1.0
from Lehigh Acres, FL on June 2025
When digging for their lines the were incompetent. They hit our underground utility and knocked the power out for several hours. The local power company had to send several trucks out to fix what they broke. When the power came back on one of my major appliances did not come back on. The foreman stated it was their fault and they would replace my appliance. After filing a claim the company decided they will not be responsible for their actions. This is not the first time they did this. It has happened in another local community. They lie and damage property. BEWARE!
Call today & find the best Quantum Fiber internet deals
1-833-440-3323

CenturyLink Customers Review

3.5
Pricing
3.5
3.0
Reliability & Performance
3.0
3.5
Equipment, Installation & Features
3.5
3.0
Customer Experience & Support
3.0
3.3
Overall Rating
3.3
Veronica Perkins
1.0
from Gordo, AL on September 2025
So slow we can’t stream anything
Lisa S
1.5
from Casco, WI on August 2025
Absolutely crap. Slow, doesn’t want to work. Not reliable.
Sharon Tillman
3.5
from Loveland, CO on August 2025
They are saying we have to switch to Quantum Fiber which cost more and we aren't happy about that.
Presiliano P
1.5
from Albuquerque, NM on June 2025
Need faster internet and a lower price
Debbie B
2.0
from Rush City, MN on May 2025
They stated $65 lifetime monthly payment to me and all my neighbors when we all signed up at the same time 4 yrs ago. We have all had an increase to $80. Every time I talked to them I never get any resolution. Yesterday I talked with a supervisor and he was no help regarding a balance due on my account that I was never aware of. I pay my $80 every month on auto pay. I am now searching for another internet service. The customer service for a very good customer is horrible. I was told several times they were unable to assist in clearing up mistakes in a late payment fee that I didn't owe. I am going back to receiving a paper bill so I can keep track of what they are applying to my account.
Call today & find the best CenturyLink internet deals
1-833-943-6858
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