Key Info 1.25TB monthly data allowance, lots of plan options, unique gaming add-on

If Cox and CenturyLink are internet options in your area, the better choice will depend on which CenturyLink connection type, fiber or DSL, is available at your address. A quick rule of thumb is that fiber internet is better than cable (Cox is cable internet), and cable is considerably better than DSL. To learn more about the different broadband types available for your home, read our internet connection types guide.

So, if CenturyLink's fiber service is available, I'd likely recommend it over Cox. On the other hand, if your address is only eligible for DSL service from CenturyLink, the cable connection you get with Cox will deliver faster, more reliable speeds and a better overall value.

That said, there may be a scenario where CenturyLink's simple, low-cost DSL service makes more sense for your home than Cox. Or perhaps Cox, with its many plan options and unique add-on for online gaming, is the better choice over the limited high-speed internet options that come with CenturyLink's fiber service.

So which is best, Cox or CenturyLink, for your home? I'll cover all the specifics of each provider below, including availability, plans and service details like contracts and data caps, to help you decide which is the best internet provider for your home.

Despite being the third largest cable internet provider in the US, Cox has a relatively small coverage area with service mostly reserved to a few cities. CenturyLink has a significantly larger coverage area than Cox, but serves as more of a suburban and rural internet provider via its DSL network.

Though CenturyLink and Cox generally operate in different regions, there are a few locations where serviceability overlaps between the two, including:

Again, Lumen Technologies sold portions of its networks to Brightspeed, so select areas may no longer be serviceable for CenturyLink DSL.

Cox's cable network gives it the flexibility to offer a number of speed tiers, including a decent prepaid internet plan. While fiber-optic lines present the same speed potential or better, CenturyLink's fiber service does not offer quite the same speed or plan variety as Cox. Options are further limited for CenturyLink DSL customers, who may only have one speed available.

CenturyLink doesn't do promotional pricing, so there's no guaranteed price increase after 12 months or other predetermined period. That's not to say your price won't ever go up, but there isn't a looming price increase to look forward to down the road.

Another thing to note with CenturyLink, particularly the DSL service, is that available speeds vary by location. So while 100Mbps is the max offered, your address may only be eligible for speeds of say, 30Mbps.

According to the latest data from the Federal Communications Commission, less than around 1% of households in the US can get CenturyLink DSL speeds of 100Mbps or higher. However, that starting monthly price is the same regardless of the available speed at your address. On the flip side, CenturyLink does have a fiber tier which could offer better value in the long run if available at your address.

Whichever plan you choose with Cox, your plans are free of contracts. To avoid the additional $15 monthly equipment charge, you can use your own modem. Finally, all plans come with a 1.25TB data cap (1,250GB).

So which is the better value? At first glance, compared with CenturyLink's fiber gigabit service, Cox's average cost per Mbps is lower (7 cents compared with 8 cents with CenturyLink). However, CenturyLink poses to be the better option if you want to save money down the line since there's also the price increase to consider. Many of Cox's plans are guaranteed to go up after the first year, while CenturyLink's may not.

As for Cox versus CenturyLink's DSL service, you'll likely find Cox to be the better value. DSL plans from CenturyLink average out to a dollar per Mbps -- not bad for DSL service, but obviously higher than the average pricing with Cox. That said, if your home is eligible for CenturyLink's fastest DSL plans of 100Mbps or higher, the starting price of $50 a month may be a better deal than Cox's lowest speed tier.

Pricing and speeds are certainly the two most important factors when comparing ISPs, but you'll want to be mindful of what else comes with service before committing to one over the other. Here's what to expect as far as added fees, contract requirements and data caps from each.

Both providers offer equipment rental and will provide a gateway device suitable for your plan and connection type. Each provider offers a similar rental fee of $15. CenturyLink customers have the option to purchase their equipment upfront for $200. However, in order to avoid these fees altogether, you can use your own equipment for either provider.

That said, both providers give you the option to use your own compatible equipment and skip the monthly fee. Just know that doing so could mean limited technical support from your provider, not to mention the upfront costs of purchasing a new router if you don't already own one.

You don't have to sign a contract with either provider to sign up for service. In the past, Cox customers needed to sign a one-year contract to receive a promo rate on the entry-level plan, this is not the case anymore.

On the other hand, you might expect overage fees from Cox for exceeding your data allowance. All Cox plans come with a monthly data cap of 1.25TB, which is actually a lot of data -- during a period of the pandemic the average home used less than half of that, around 435GB per month. But with heavy HD and 4K streaming, along with connecting numerous devices, that 1.25TB limit is certainly within reach. Should you go over more than once (the first incident is free of charge, courtesy of Cox), you'll be charged $10 per 50GB block of data you go over, up to a max of $100.

CenturyLink plans also come with a data cap, 1TB per month, but there is no fee for going over. You'll still want to be somewhat mindful of your data usage, however, as frequent or excessive overages could violate CenturyLink's terms of service and excessive use policy.

What do actual CenturyLink and Cox customers think of their service? American Customer Satisfaction Index scores indicate that Cox has a slightly better customer satisfaction rating. In the most recent ACSI ratings, from 2024, Cox had a slight advantage with a 68/100 compared with CenturyLink's 62. Moreover, CenturyLink's points remained the same from last year.

Both providers fell below the industry average of 71/100 in 2024, so it seems they both have room for improvement.

When comparing CenturyLink versus Cox, the better provider for your home will probably come down to which CenturyLink connection type is available at your address. If that's fiber, CenturyLink will offer more speed for the money along with the inherent advantages fiber-optic has over cable, such as superior reliability and symmetrical upload and download speeds. On the other hand, if your address is only available for DSL service, Cox will be your best bet for speeds over 100Mbps and better value overall. Just be prepared to deal with overage fees if you exceed your monthly data cap.