Best DSL Internet Providers in Denver, Colorado (2026)
The leading DSL internet provider in Denver is CenturyLink, covering approximately 92.3% of the area. DSL plans here start around $37-55/month with speeds from 15 to 100 Mbps, depending on your distance from the nearest DSLAM.
The Denver, Colorado internet market includes 2 DSL providers offering broadband service over copper telephone lines. For the city's 715,522 residents, DSL represents a practical internet choice, especially in areas of this West large city where cable or fiber is limited. CenturyLink leads with coverage spanning about 92.3% of the metro.
DSL Internet Providers in Denver: Comparison Table
| Provider | Max Speed | Starting Price | Coverage | Phone |
|---|---|---|---|---|
| CenturyLink | Up to 100 Mbps | $50/mo | 92.3% | 1-855-512-4817 |
| AT&T Internet | 100 Mbps | $55/mo | 43.4% | 1-855-850-5977 |
DSL Internet Providers Serving Denver, CO
Here is a detailed look at each DSL provider serving Denver, including their plan options, technology, and coverage footprint.
CenturyLink DSL Internet in Denver
In Denver, CenturyLink reaches roughly 92.3% of households with its DSL internet service.
CenturyLink continues to maintain its DSL infrastructure in Denver, serving areas where fiber-optic upgrades have not yet arrived. Many residential neighborhoods in the West still rely on DSL as their primary wired broadband option.
- Simply Unlimited Internet: Up to 100 Mbps download for $50/mo (VDSL2 technology)
- DSL 40: 40 Mbps download for $50/mo (VDSL2 technology)
View CenturyLink DSL plans for Denver →
Call 1-855-512-4817 to check CenturyLink DSL availability at your Denver address.
AT&T Internet DSL Internet in Denver
AT&T Internet serves an estimated 43.4% of Denver addresses with DSL-based broadband connectivity.
The AT&T Internet DSL network in Denver benefits from no data caps on most residential plans, making it suitable for households with moderate streaming and browsing needs. Speed may vary based on the condition and length of your copper phone line.
- Internet 100: 100 Mbps download for $55/mo (VDSL2/IPBB technology)
- Internet 25: 25 Mbps download for $55/mo (ADSL2+ technology)
View AT&T Internet DSL plans for Denver →
Call 1-855-850-5977 to check AT&T Internet DSL availability at your Denver address.
While Xfinity does not offer DSL in Denver, it provides alternative internet service. Call 1-844-963-0138 to learn about Xfinity plans.
T-Mobile serves Denver with 5G, Fixed Wireless, Mobile technology. Call 1-844-275-9311 to learn about T-Mobile plans.
Consider HughesNet as an alternative to DSL in Denver if coverage is available. Call 1-855-543-5405 to learn about HughesNet plans.
For a non-DSL option in Denver, Verizon Fios offers service via Fiber. Call 1-855-387-1456 to learn about Verizon Fios plans.
The State of DSL Internet in Denver, Colorado
DSL internet in Denver utilizes existing copper telephone infrastructure to deliver broadband service to residences across the city. The technology comes in two primary forms: ADSL (Asymmetric Digital Subscriber Line) with speeds up to 24 Mbps, and VDSL2 (Very-high- bit-rate Digital Subscriber Line 2) capable of delivering up to 100 Mbps. Which variant is available at your Denver address depends almost entirely on how far your home sits from the nearest DSLAM equipment.
In the Denver metropolitan area, DSL infrastructure has been deployed and upgraded over multiple generations. Older neighborhoods closer to the city center often have shorter copper loops to the central office, potentially qualifying for faster VDSL2 service. Newer suburban developments further from established infrastructure may see ADSL speeds unless the provider has deployed remote DSLAMs in the area. Population density in Denver (with approximately 715,522 residents) has encouraged providers to invest in DSLAM placement strategically across the service territory.
A distinguishing characteristic of DSL compared to cable internet is the dedicated connection. Denver DSL subscribers do not share their last-mile bandwidth with adjacent homes. This isolation from neighbor traffic can provide more predictable performance, especially during high-usage periods between 7 PM and 11 PM. For households in Denver that prioritize connection stability over raw speed, DSL can be a sound choice.
Most DSL providers serving Denver do not impose monthly data caps on residential service, allowing unlimited usage for streaming, video conferencing, and general browsing. Additionally, DSL is widely available in areas of Denver where fiber and cable have yet to expand, making it a critical broadband option for underserved neighborhoods. Bundling DSL with home phone service over the same copper pair often reduces the total monthly cost for both services.
How to Choose the Best DSL Provider in Denver
Selecting the right DSL internet provider in Denver involves evaluating several factors specific to your address and household needs. Start by checking which providers actually have coverage at your location, as DSL availability can vary block by block depending on the copper network layout. Next, consider the speed tier you need: basic web browsing and email require only 10-15 Mbps, while streaming HD video on multiple devices may call for 50-100 Mbps VDSL2 service.
Price is another important factor for Denver DSL shoppers. Compare the monthly rates for similar speed tiers among available providers, and look carefully at whether the advertised price includes a promotional discount that will increase after 12 months. Some providers in the Colorado market offer price-lock guarantees that keep your rate fixed for the contract term.
Contract terms differ among DSL providers serving Denver. Some require a one- or two-year agreement with early termination fees, while others offer month-to-month service with no commitment. If you are renting in Denver or anticipate moving, a no-contract option may provide more flexibility. Equipment rental fees for the DSL modem or gateway also vary and should be factored into the total monthly cost.
Finally, consider customer service reputation. Reading reviews from other Denver DSL subscribers can provide insight into installation experience, reliability, and technical support quality. The West region has varying levels of provider investment in infrastructure maintenance, so local feedback can be especially valuable for making an informed decision.
DSL Availability Across Denver Neighborhoods
DSL internet coverage in Denver, CO varies by neighborhood based on the copper telephone network layout. Areas closer to the city's telephone central offices and remote DSLAMs generally receive higher DSL speeds. With 715,522 residents spread across the large city's footprint, the experience differs significantly between dense urban blocks and more spread-out suburban communities.
In the Denver internet market, DSL competes with 8 other technology types including cable, fiber, 5G home internet, and satellite. DSL's key advantages in this competitive landscape include no data caps on most plans, a dedicated (non-shared) connection, and broad availability through existing phone lines. These features make DSL especially valuable in Denver neighborhoods still waiting for next-generation broadband deployment.
For renters in Denver who may move frequently, DSL offers the convenience of using standard telephone wiring already present in virtually every apartment and house. Installation is often simpler and faster than cable or fiber, with many providers able to activate DSL service remotely or with a self-installation kit. This ease of setup makes DSL a practical choice for the mobile population in Denver's West market.
Frequently Asked Questions About DSL Internet in Denver
What is the difference between ADSL and VDSL2?
ADSL (Asymmetric Digital Subscriber Line) reaches up to 24 Mbps and works at longer distances from the DSLAM, up to about 18,000 feet. VDSL2 (Very-high-bit-rate DSL 2) offers speeds up to 100 Mbps but requires a shorter copper loop, typically under 5,000 feet. Both technologies use existing copper telephone wiring.
Do DSL internet plans in Denver have data caps?
Most DSL internet plans available in Denver do not include monthly data caps. Unlike satellite and some mobile broadband services, DSL providers in Colorado generally offer unlimited data usage on residential plans, making them suitable for streaming, remote work, and everyday browsing.
How reliable is DSL internet in Denver?
DSL internet in Denver is generally reliable because each subscriber has a dedicated copper connection to the DSLAM. Outages are typically caused by physical line damage or central office equipment issues rather than network congestion. Older copper wiring may be more susceptible to weather-related signal degradation, but modern DSL equipment handles most conditions well.
Can I bundle DSL internet with phone service in Denver?
Yes, most DSL providers in Denver offer bundles that include both internet and home phone service over the same copper telephone line. Bundling typically saves $5-20 per month compared to purchasing each service separately. Ask your provider about current bundle pricing when you call.
What equipment do I need for DSL internet in Denver?
To use DSL internet in Denver, you need a DSL modem (or combination modem-router gateway) and DSL line filters for any phone jacks in use. Most providers include a modem with service, either for a monthly rental fee or included at no extra charge. A separate Wi-Fi router may be needed if the provided modem does not include wireless capability.
Is DSL internet fast enough for streaming in Denver?
DSL internet in Denver can support streaming depending on your speed tier. VDSL2 plans at 50-100 Mbps handle HD and 4K streaming on multiple devices comfortably. Even ADSL plans at 15-25 Mbps can support HD streaming on one or two devices simultaneously. For best results, connect your streaming device via ethernet when possible.
Related Internet Resources for Denver
- Internet Providers in Denver, CO
- Cheap Internet in Denver
- Fiber Internet in Denver
- Cable Internet in Denver
- Internet Providers in Colorado
- DSL vs Cable Internet Comparison
- Internet Speed Guide
Our team researches and evaluates DSL internet providers in Denver to help you make informed decisions. Some links on this page are affiliate links, meaning we may earn a commission if you sign up through them. This does not affect our rankings or recommendations, which are based on objective coverage data and plan details.