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Xfinity vs KUB Fiber Knoxville
KUB Fiber offers faster, symmetrical speeds where its network reaches, while Xfinity covers nearly twice as much of Knoxville at a low starting price.
KUB Fiber wins on raw performance, with symmetrical speeds up to 10,000 Mbps and a 99/100 speed score that edges out Xfinity’s 94/100. But Xfinity covers about 89% of Knoxville versus KUB’s roughly 48%, so it’s simply available to far more homes, and it starts at just $20/mo. If KUB Fiber reaches your address, it’s the better long-term pick for speed and upload-heavy work. If it doesn’t, or you want the cheapest entry price, Xfinity is the practical choice.
At a glance
Xfinity vs. KUB Fiber, side by side.
| Provider | Type | Top speed | City coverage | Starting price | Best for |
|---|---|---|---|---|---|
| Xfinity |
Cable | 2 Gig 300 Mbps upload |
89% | $20/mo | Budget-friendly |
| KUB Fiber |
Fiber | 10 Gig 10 Gig upload |
48% | See plans | Top fiber speeds |
Coverage map
Two different questions, two views. Top speed shows who offers the faster plan where you can actually get it. Coverage shows who reaches more of each ZIP. Or pick a single provider to see just its footprint.
Neighborhood breakdown
Which provider wins depends heavily on your exact block in Knoxville. Xfinity’s cable footprint reaches most of the city, so it’s the safer bet in areas KUB Fiber hasn’t wired yet, while KUB Fiber’s roughly 48% coverage means fiber may be live on one street and absent on the next. Always check both at your specific address before deciding.
| ZIP | Neighborhoods | Coverage | Top speed | Speed Score | Winner | |||
|---|---|---|---|---|---|---|---|---|
| Xfinity | KUB Fiber | Xfinity | KUB Fiber | Xfinity | KUB Fiber | |||
| 37921 | Lonsdale, Mechanicsville, Beaumont, West View | 100% | 90% | 2 Gig | 10 Gig | 95 | 97 | KUB Fiber |
| 37920 | South Knoxville, Vestal, Island Home, Colonial Village | 97% | 39% | 2 Gig | 10 Gig | 95 | 87 | Xfinity |
| 37918 | Fountain City, Halls Crossroads, Gibbs | 100% | 77% | 2 Gig | 10 Gig | 95 | 95 | Xfinity |
| 37917 | North Knoxville, Old North Knoxville, Fountain City | 100% | 82% | 2 Gig | 10 Gig | 95 | 96 | KUB Fiber |
| 37938 | Halls, Halls Crossroads, North Knoxville | 95% | 68% | 2 Gig | 10 Gig | 94 | 93 | Xfinity |
| 37914 | East Knoxville, Burlington, Chilhowee Park | 94% | 30% | 2 Gig | 10 Gig | 94 | 85 | Xfinity |
| 37919 | Bearden, Sequoyah Hills, West Hills | 99% | 98% | 2 Gig | 10 Gig | 95 | 99 | KUB Fiber |
| 37912 | Inskip, Fountain City, Norwood | 100% | 76% | 2 Gig | 10 Gig | 95 | 94 | Xfinity |
| 37923 | Cedar Bluff, West Hills, Ebenezer | 99% | 38% | 2 Gig | 10 Gig | 95 | 87 | Xfinity |
| 37922 | Farragut, Concord, Choto | 80% | 8% | 2 Gig | 10 Gig | 91 | 81 | Xfinity |
| 37924 | East Knoxville, Holston Hills, Ritta | 97% | 8% | 2 Gig | 10 Gig | 95 | 81 | Xfinity |
| 37931 | Karns, Hardin Valley, Solway | 100% | 15% | 2 Gig | 10 Gig | 95 | 82 | Xfinity |
| 37915 | Morningside, Parkridge, Old City | 95% | 93% | 2 Gig | 10 Gig | 94 | 98 | KUB Fiber |
| 37909 | West Hills, Bearden, Cedar Bluff | 100% | 94% | 2 Gig | 10 Gig | 95 | 98 | KUB Fiber |
| 37932 | Hardin Valley, Karns, Pellissippi | 85% | 0% | 2 Gig | — | 92 | — | Xfinity |
| 37916 | University of Tennessee, Fort Sanders, Cumberland Avenue | 96% | 99% | 2 Gig | 10 Gig | 94 | 99 | KUB Fiber |
| 37902 | Downtown Knoxville, World’s Fair Park, Gay Street | 93% | 92% | 2 Gig | 10 Gig | 94 | 98 | KUB Fiber |
| 37996 | University of Tennessee, Fort Sanders | 56% | 0% | 2 Gig | — | 86 | — | Xfinity |
| 37901 | Downtown Knoxville, Central Business District | 93% | 92% | 2 Gig | 10 Gig | 94 | 98 | KUB Fiber |
| 37939 | West Knoxville, Bearden, Sequoyah Hills | 100% | 100% | 2 Gig | 10 Gig | 95 | 99 | KUB Fiber |
| 37928 | North Knoxville, Fountain City | 100% | 100% | 2 Gig | 10 Gig | 95 | 99 | KUB Fiber |
| 37927 | Downtown Knoxville, North Knoxville | 100% | 95% | 2 Gig | 10 Gig | 95 | 98 | KUB Fiber |
| 37933 | West Knoxville, Hardin Valley, Cedar Bluff | 5% | 0% | 1 Gig | — | 76 | — | Xfinity |
| 37940 | South Knoxville, Vestal | 100% | 98% | 2 Gig | 10 Gig | 95 | 99 | KUB Fiber |
Speed Score (0–100) blends each provider’s coverage and top speed in that specific ZIP, so it moves as availability changes street to street.
Which is better for…
The right pick comes down to what you actually do online.
Get connected
Pick your provider and check availability at your address.
- 2 Gig down · 300 Mbps up Cable
- 2 Gig down · 300 Mbps up Fiber
- 1 Gig down · 35 Mbps up Fiber
See what’s actually available at your address
Coverage changes from one street to the next. Check your exact address in seconds.
Check my addressFrequently asked questions
Is KUB Fiber available at my address in Knoxville?
KUB Fiber currently reaches about 48% of Knoxville, compared to Xfinity’s roughly 89% coverage, so availability is a coin flip depending on your block. Enter your exact address on both providers’ sites to confirm which is actually serviceable before you compare plans.
Which is cheaper, Xfinity or KUB Fiber in Knoxville?
Xfinity starts at $20/mo while KUB Fiber lists ‘see plans,’ so Xfinity has the clearer low entry price. Keep in mind these are promotional starting rates, so confirm the post-promo price, equipment fees, and any contract terms with each provider before signing.
Which is faster and is it enough for gaming, working from home, and 4K?
KUB Fiber is faster on paper, with symmetrical speeds up to 10,000 Mbps (where available) and a 99/100 speed score versus Xfinity’s 2000/300 Mbps and 94/100. Both handle 4K and gaming well, but if you do heavy uploads for work or streaming, check whether KUB Fiber reaches your address to get its symmetrical advantage.
More Knoxville comparisons
How Knoxville’s other qualifying providers stack up head-to-head.