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
Upload your latest business internet invoice. We will run it against Phoenix carrier wholesale data and flag the side fees that should not be there.
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