CenturyLink vs. Frontier Internet Providers Compared

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.

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.

Frontier will give you a good deal on fiber, but DSL varies widely Frontier's main distinction among fiber internet providers is competitive pricing on high-speed plans. Fiber internet plans range from $19.99 to $109.99 per month with Auto Pay and Paperless Billing [4]. Current promotional pricing includes Fiber 200 at $39.99/month, Fiber 500 at $29.99/month, and Fiber 1 Gig at $49.99/month—all offering symmetrical upload and download speeds.  With router rental included and no data caps, Frontier Fiber offers the kind of simple, clear pricing that earns high ratings from us. Frontier offers significant sign-up incentives, some of which has included a $300 Visa Reward Card with Fiber 5 Gig and 7 Gig plans, a $200 Visa Reward Card with Fiber 2 Gig, and $10/month off YouTube TV for 12 months. Be sure to check Frontier’s official website for current promotions. The only drawback is that Frontier Internet (the name for their DSL plans) does not provide the same kind of bargain. Frontier's single DSL plan costs $64.99 per month with variable speeds depending on your location. Plus, the DSL speed you will be able to get at your address will vary depending on infrastructure, with customers receiving average download speeds of 30 Mbps and upload speeds of 2 Mbps [5]. Average DSL pricing in the industry is not a great deal for customers compared to cable and fiber pricing. That's why Frontier and many other providers are moving away from copper-based service in favor of fiber.

“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. About 47% of CenturyLink customers achieve speeds up to 30 Mbps. On the flip side, a lucky 27% are able to achieve 80 Mbps or more, delivering a much better experience [5]. 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. However, if you are considering ordering CenturyLink DSL, be sure to research your other options. You can test your actual speed here to see what kind of performance your current internet connection is giving you.

Frontier Fiber offers speed and reliability, but their DSL lags behind Just like pricing, performance for Frontier plans is heavily split depending on whether you get fiber or DSL. With Frontier Fiber, you can get multi-gigabit speeds up to 7,000 Mbps. That's right up there with the top few providers in the fiber internet business, with Frontier customers receiving average fiber speeds of 6,394 Mbps for both downloads and uploads. Frontier's fiber network delivers true symmetrical speeds—meaning your upload speed matches your download speed—which is particularly valuable for video conferencing, cloud backups, and content creation. These multi-gigabit speeds will be more than sufficient for very large households with many devices all streaming or gaming simultaneously. Even 500 Mbps is still a lot of speed and will be more than capable of supporting a five- or six-person home and all the devices in it. The pending Verizon acquisition commits to completing Frontier's planned expansion to 10 million fiber homes by 2026, ensuring continued network investment and reliability improvements.

DSL performance will be unpredictable, with customers receiving average download speeds of just 30 Mbps and upload speeds of only 2 Mbps. The only constant is that it will not deliver fiber-like performance. If you're lucky, you'll get a speed above 25 Mbps download. With that speed, you'll be able to do most standard internet activities such as streaming and browsing, though you'll have to watch how many devices are online at once. But if you get a speed that's 10 Mbps or lower, you may find your service glitching or freezing during heavy-data tasks. Frontier is actively phasing out DSL in favor of fiber networks, with former CEO Nick Jeffery indicating full copper decommissioning is expected within a three- to five-year timeframe [6].

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.

Installation fees waived for fiber, included router varies by plan Frontier currently waives installation fees entirely for all fiber plans, while DSL plans have a $100 installation fee that you can avoid by doing self-installation. Every Frontier Fiber plan includes a premium Wi-Fi router at no charge, with the specific model depending on your speed tier. Plans from Fiber 200 through Fiber 2 Gig come with a free Amazon eero Pro 6E router, while Fiber 5 Gig and Fiber 7 Gig plans include the more advanced TP-Link Archer AXE300 6E router. For customers choosing the top-tier 5 Gig plan, Frontier also includes a three-year new tech upgrade guarantee. However, there are some important fees to be aware of if you decide to cancel service. Frontier charges a $100 early termination fee if you cancel within the first 12 months for all fiber plans except the Fiber 2 Gig plan, which has no early termination fee. Additionally, if you fail to return equipment after terminating service, Frontier may charge for non-return equipment fees. There's also a $50 restocking fee if you decide you no longer want your Frontier Fiber service.

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. According to the American Customer Satisfaction Index, CenturyLink's DSL service scored 62 out of 100 in 2025, which was the same score they received the previous year. 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.

Frontier Fiber shows strong performance in customer satisfaction Frontier's reviews have improved greatly with increased fiber service. In the 2025 American Customer Satisfaction Index (ACSI) report, Frontier scored 71/100 for its fiber service—a significant improvement over its 58/100 score for non-fiber internet [7]. While fiber ISP satisfaction scores tend to run lower industry-wide, with AT&T leading at 78/100, Frontier's fiber performance places it competitively among major providers. Recent customer feedback reinforces these improvements. One Reddit user wrote that their “newly installed 2 Gig fiber [is an] awesome experience so far” [8]. That said, reliability might depend on where you reside, as another Reddit thread had commenters praising their service in Plano, TX, but also reporting outages and inconsistencies in speeds [9]. Frontier's sharp rise in rankings is a promising sign that if you get Frontier Fiber, you will be happy with your choice. The fiber service has earned an overall rating of 3.83 stars specifically, compared to just 2.55 stars for DSL service, highlighting the dramatic difference in customer satisfaction between the two technologies.