Phoenix is a Cox cable town with a Lumen fiber overlay, and that combination shapes every quote you'll see. Cox has the on-net advantage in most commercial buildings, which means their broadband and DIA quotes come back fast and their fiber competitors come back slow. The valley sprawls hard. A business in Tempe or north Scottsdale may have four real options, while a similar business in Surprise or Buckeye has Cox and a fixed wireless quote. NOVOS FiBER and a few regional builders are starting to crack that, but the build is uneven. Your zip code matters more here than in most Tier B metros.
Phoenix is mostly a Cox Business market, with CenturyLink (now part of Lumen) on most commercial blocks and growing competition from T-Mobile fixed wireless and Cox's own fiber product. The valley has expanded faster than carrier infrastructure in some suburbs, so the right answer can vary by zip code more than in most metros.
The pricing problem in Phoenix is that Cox has long had a quasi-monopoly on cable, which means many local businesses default to Cox and have not tested the alternatives.
Phoenix's commercial valley
Phoenix's commercial demand sits in three places. Downtown Phoenix holds the legal, financial, and government corridor centered on Central Avenue and the surrounding civic complex. The Camelback Corridor, running along Camelback Road from Phoenix into Scottsdale, anchors the metro's largest concentration of Class A office and corporate-services tenancy outside downtown. Deer Valley, on the northern edge of the city near Loop 101, is the suburban office and aerospace and technology cluster anchored by Honeywell and the surrounding industrial parks. Banner Health, the largest non-profit health system in Arizona and headquartered in Phoenix, and Arizona State University's Downtown Phoenix campus are two of the largest commercial accounts in the metro and shape enterprise telecom expectations for the rest of the market.
In 2025, NOVOS FiBER announced a $130 million investment in Phoenix and said construction was underway to bring fiber internet service to the city, putting a new fiber-to-the-building competitor on top of Cox and CenturyLink. One regulatory wrinkle: Phoenix adopted a new Network Infrastructure Services framework in late 2024 to standardize fees and create a license structure for fiber providers using city rights-of-way for FTTH and business broadband networks.
What you should be paying
These are dedicated internet ranges from current carrier wholesale data, marked up to typical retail.
Phoenix dedicated internet, typical retail (mid 50%)
Monthly recurring charge, dedicated internet access (DIA). Numbers are derived from current carrier wholesale quotes.
| Speed | Typical retail (mid 50%) | Sample size |
|---|---|---|
| 500 Mbps | $1,080 – $1,315/mo | n = 1 |
| 1 Gbps | $1,355 – $1,645/mo | n = 1 |
| 10 Gbps | $2,415 – $2,935/mo | n = 1 |
If your bill sits above the high end of the band, you are likely overpaying.
Analyze My Bill FreeFor Cox Business coax at 300 Mbps, the fair price is $130 to $200 a month for a single office. We have seen the same product billed at $310 a month on accounts past their promo period.
For CenturyLink fiber where it is available, a 1 Gbps line should land between $150 and $230 a month. T-Mobile Business Internet runs $85 a month for 200 to 300 Mbps fixed wireless.
Carriers worth quoting in Phoenix
Five carriers cover most addresses in the metro.
- Cox Business. Coax everywhere, fiber in select buildings. Default for most existing customers.
- CenturyLink (Lumen). Fiber in select markets, copper elsewhere. Most aggressive on price where they have rebuilt.
- T-Mobile Business Internet. $85 a month for 200 to 300 Mbps. Useful benchmark.
- Verizon 5G Business Internet. $99 a month at 400 Mbps. Same use case as T-Mobile.
- Local fiber overbuilders. Phoenix has a small but real fiber overbuilder market, especially in Tempe and Chandler.
If you have not had three of these on a quote sheet, you have not run a real comparison.
What to do this week
- Pull your most recent invoice. Find the contract end date and the side fees.
- Get one quote outside Cox. T-Mobile Business Internet is the fastest benchmark.
- Compare your base rate to the bands above. If you are 20 percent above the high end, the retention call is worth making.
See where your Phoenix bill sits against current rates
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Carriers worth a quote here
- Cox Business
Cox is the default in Phoenix and has been for two decades, with deep cable coverage across the valley and a growing fiber product in commercial corridors. They rarely lead on price because they don't have to, but they will sharpen a quote when you put a real Lumen or NOVOS bid in front of them.
- Lumen Business
Lumen (formerly CenturyLink) is on most commercial blocks in downtown Phoenix, the Camelback Corridor, and Deer Valley. They're hungry for SMB and mid-market business right now and are one of the more negotiable carriers in the metro if you push on term and timing.
- T-Mobile Business
T-Mobile fixed wireless has filled gaps in Phoenix's outer suburbs and industrial parks where fiber hasn't reached. It's a credible broadband backup or primary for low-bandwidth sites, but it's not a DIA replacement for anything that needs an SLA.
- Crown Castle Fiber
Crown Castle has fiber routes through downtown Phoenix and into Tempe along the ASU corridor, mostly serving carrier and enterprise traffic. If your building is on their footprint, wave and dark fiber pricing can beat the cable carriers, but coverage is route-specific.
- Comcast Business
Comcast has a limited Phoenix footprint compared to its presence in other Tier B metros, since Cox holds most of the cable territory here. Where Comcast does serve, it's usually a specific commercial park or recently overbuilt area, and quotes are more competitive than Cox because they're trying to win share.
- AT&T Business
AT&T is not the ILEC in Phoenix, so their wireline presence is thinner than in their home territories. They show up on multi-site national deals and have fiber in select commercial buildings, but they rarely win a single-site Phoenix quote on price alone.
What internet costs in Phoenix, Arizona right now
Phoenix, Arizona market notes
Common questions about business internet in Phoenix, Arizona
Is Cox Business the only real option in Phoenix?
No, but it can feel that way. In most commercial buildings inside the 101 loop, you'll have Cox plus at least one fiber option, usually Lumen and increasingly NOVOS. In outer suburbs, Cox may be the only wireline carrier on the block, with T-Mobile or Verizon fixed wireless as the alternative. Always get a second quote before signing with Cox.
How much should I pay for 1Gbps dedicated internet in Phoenix?
Current Phoenix retail for DIA 1Gbps runs $1,355 to $1,645 a month on a 3-year term. If you're paying more than that and your contract is older than 2 years, you're almost certainly above market. End-of-quarter timing and a competing quote in hand are the two levers that move Phoenix DIA pricing the most.
What is NOVOS FiBER and should I wait for them?
NOVOS announced a $130 million Phoenix fiber build in 2025. They're a real builder, not a reseller, and they're targeting commercial buildings. Whether to wait depends on your contract clock. If you're 12-plus months from renewal, ask NOVOS for a serviceability check now so you know your options when the time comes. Don't break a contract to chase a build that may take 18 months.
Why are my Cox bills going up every year?
Cox, like most cable carriers, raises rates annually on out-of-contract or month-to-month customers. Equipment rental fees, the Network Enhancement Fee, and broadcast surcharges also tend to creep. If you're on a contract, check whether your MRC was locked or just the promotional rate. The 'fees and surcharges' line is where most of the increase hides.
Do I need DIA or is business broadband enough?
If your business runs VoIP for more than 10 phones, hosts customer-facing services, or cannot tolerate a half-day outage without losing revenue, you want DIA with an SLA. If you're a small office doing email, video calls, and cloud apps, business broadband at 500Mbps to 1Gbps from Cox or NOVOS will do the job for a third of the price. Most Phoenix businesses are over-bought on this dimension.
Are there permit delays that affect telecom installs in Phoenix?
Yes, but it depends on which city in the valley. Phoenix proper standardized its right-of-way process in late 2024, which has helped. Scottsdale and Tempe are generally faster. Outer cities like Buckeye and Queen Creek can take 60 to 90 days for off-net builds because the carrier has to pull permits the city doesn't process every day. Ask the carrier for a written install commitment, not a verbal one.