Denver is mostly a Comcast and CenturyLink (Lumen) market with growing fiber competition. Comcast Business has the dominant cable footprint. CenturyLink rebuilt fiber in many parts of the city. Quantum Fiber, the rebranded CenturyLink fiber product, has aggressive published rates. T-Mobile fixed wireless covers most of the metro.
The pricing problem in Denver is that many businesses signed long-term Comcast contracts during the 2020 to 2022 period and have never tested the new fiber options that arrived since.
Denver's commercial centers
Denver's commercial demand sits in three districts. Downtown Denver holds the legal, financial, and government corridor through the central business district. Cherry Creek North, southeast of downtown, is one of the metro's strongest mid-size office and Class A retail clusters and has held up better than downtown on occupancy in recent years. River North Art District (RiNo), just north of downtown, has shifted from industrial-loft creative tenancy into a mixed Class A office and tech corridor. Denver's broadcast, telecommunications, and financial-services clusters drive most of the metro's enterprise telecom demand.
In 2025, CoreSite hit a major construction milestone for its new DE3 Denver data center at 4900 Race Street, expanding the metro's interconnection and cloud infrastructure footprint. One regulatory wrinkle: Colorado's SB23-183, approved May 1, 2023, removed the voter-approval requirement before local governments can provide broadband, telecommunications, or cable service or partner on related infrastructure, which clears the way for muni or public-private fiber projects.
What you should be paying
These are dedicated internet ranges from current carrier wholesale data, marked up to typical retail.
Denver 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 |
|---|---|---|
| 100 Mbps | $660 – $800/mo | n = 1 |
| 1 Gbps | $1,195 – $1,455/mo | n = 1 |
| 10 Gbps | $2,190 – $2,660/mo | n = 1 |
If your bill sits above the high end of the band, you are likely overpaying.
Analyze My Bill FreeFor Comcast Business coax at 600 Mbps, the fair price is $150 to $230 a month for a single office. For Quantum Fiber at 1 Gbps, expect $130 to $200 a month, which is one of the better headline rates available in the metro.
Carriers worth quoting in Denver
Five carriers cover most addresses in the metro.
- Comcast Business. Coax everywhere, fiber in select buildings. Default for most existing customers.
- Quantum Fiber (Lumen / CenturyLink). 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.
- Local fiber overbuilders. Denver has a small but real fiber overbuilder market, especially in RiNo and the Highlands.
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 Comcast. Quantum Fiber publishes most rates online and 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 Denver bill sits against current rates
Upload your latest business internet invoice. We will run it against Denver carrier wholesale data and flag the side fees that should not be there.
Takes 60 seconds. No account required.