Best Business Internet Providers in Ontario, CA (2026)

Looking for business internet in Ontario, CA? The top options available include AT&T Business, Comcast Business, and Spectrum Business. Most residents can access download speeds of 100-5,000 Mbps depending on their location. Contact providers directly using the phone numbers below to verify coverage at your specific address.

Residents of Ontario, California benefit from having 6 business internet providers in their area. This level of competition typically translates to better pricing, more plan options, and stronger customer support as providers work to attract and retain subscribers.

However, not all providers offer the same experience. Speeds, reliability, and value can vary dramatically depending on which company you choose and which plan you select. Some providers excel at delivering consistent speeds during peak hours, while others offer the lowest starting prices but may throttle performance when the network is congested.

We created this resource to cut through the noise and help Ontario residents find the business internet solutions that truly meets their needs. Our comparison includes real pricing data, honest assessments of each provider's strengths and weaknesses, and direct contact information to make your decision as easy as possible.

Business Internet Providers Comparison

Provider	Technology	Speed Range	Price Range	Call to Order
AT&T Business	Fiber/DSL	100-5,000 Mbps	$60-$250/mo	1-855-850-5977
Comcast Business	Cable/Fiber	200-1,200 Mbps	$70-$250/mo	1-844-963-0138
Spectrum Business	Cable/Fiber	300-1,000 Mbps	$65-$165/mo	1-844-481-5997
Verizon Business	Fiber	300-940 Mbps	$70-$220/mo	1-855-387-1456
Lumen (CenturyLink)	Fiber/DSL	100-940 Mbps	$65-$200/mo	1-855-512-4817
Frontier Business	Fiber/DSL	200-2,000 Mbps	$60-$150/mo	1-855-981-6281

Business Internet Provider Details for Ontario, CA

AT&T Business in Ontario, CA

AT&T Business offers Ontario, CA residents access to Fiber/DSL internet. With speeds from 100-5,000 Mbps and prices from $60-$250/mo, AT&T Business competes well in the local market. Their plans include options suitable for light users as well as power users who need maximum bandwidth. Call to discuss which plan best fits your usage.

Call to check availability: 1-855-850-5977

View AT&T Business Plans » | Read Full AT&T Business Review

Comcast Business in Ontario, CA

As a Cable/Fiber provider in Ontario, Comcast Business delivers speeds of 200-1,200 Mbps at $70-$250/mo monthly. Comcast Business's service in CA has earned a reputation for solid reliability. Whether you are a new customer or considering switching providers, calling the number below will get you the most current plan details and promotional offers.

Call to check availability: 1-844-963-0138

View Comcast Business Plans » | Read Full Comcast Business Review

Spectrum Business in Ontario, CA

As a Cable/Fiber provider in Ontario, Spectrum Business delivers speeds of 300-1,000 Mbps at $65-$165/mo monthly. Spectrum Business's service in CA has earned a reputation for solid reliability. Whether you are a new customer or considering switching providers, calling the number below will get you the most current plan details and promotional offers.

Call to check availability: 1-844-481-5997

View Spectrum Business Plans » | Read Full Spectrum Business Review

Verizon Business in Ontario, CA

Verizon Business serves Ontario, CA using Fiber technology. Their plans in the area offer download speeds of 300-940 Mbps at prices ranging from $70-$220/mo. Verizon Business is a strong choice for households that want consistent performance for streaming, video conferencing, and everyday browsing. Equipment rental fees and installation costs may apply; ask about current promotions when you call.

Call to check availability: 1-855-387-1456

View Verizon Business Plans » | Read Full Verizon Business Review

Lumen (CenturyLink) in Ontario, CA

Lumen (CenturyLink) brings Fiber/DSL internet to Ontario, with plan speeds of 100-940 Mbps and pricing from $65-$200/mo. For Ontario residents looking for a balance of speed and affordability, Lumen (CenturyLink) frequently offers competitive introductory rates. Their customer service team can confirm exactly which speeds are available at your address.

Call to check availability: 1-855-512-4817

View Lumen (CenturyLink) Plans » | Read Full Lumen (CenturyLink) Review

Frontier Business in Ontario, CA

Frontier Business offers Fiber/DSL-based internet to Ontario, CA residents. With speeds of 200-2,000 Mbps and plans priced at $60-$150/mo, Frontier Business caters to a range of usage needs. Their network infrastructure in the area supports both standard and premium speed tiers. Contact Frontier Business directly to find out which plans are available at your specific address.

Call to check availability: 1-855-981-6281

View Frontier Business Plans » | Read Full Frontier Business Review

Ontario Internet Service Analysis

The Ontario, CA market for business internet service includes 6 providers, each with distinct coverage areas within the city. Urban areas and established neighborhoods generally enjoy the widest selection of providers, while some outlying areas may have more limited options.

California's regulatory environment and infrastructure planning have contributed to a relatively healthy competitive landscape for internet service. Ontario residents can take advantage of this competition by comparing plans carefully and negotiating with providers. Bundling internet with other services like TV or mobile phone plans can sometimes reduce the overall monthly cost.

Looking ahead, internet service in Ontario is expected to improve as providers continue investing in network upgrades. Fiber expansion, 5G rollouts, and technology improvements all point toward faster speeds and potentially lower prices for consumers in the coming years. For now, the providers listed on this page represent your best options for reliable business internet service.

Speed Recommendations by Usage Type in Ontario, CA

Choosing the correct internet speed prevents both waste and frustration. Here is what we recommend for different types of Ontario internet users:

Remote workers: At least 50 Mbps download and 10 Mbps upload for reliable video conferencing. Households with two remote workers should aim for 200+ Mbps with strong upload speeds.
Streaming households: 100 Mbps for standard HD on two screens; 300+ Mbps for 4K content on multiple TVs and devices simultaneously.
Gamers: 100+ Mbps with low latency. Fiber and cable connections typically offer better latency than satellite or fixed wireless options.
Smart home users: Add 5-10 Mbps per connected device (cameras, thermostats, speakers, locks). A home with 15+ smart devices should consider at least 200 Mbps.
Budget-conscious users: Plans in the 50-100 Mbps range offer the best value for typical household needs without premium pricing.

Regardless of which speed tier you choose, hardwiring devices that need maximum performance (gaming consoles, desktop computers, streaming boxes) via Ethernet cable delivers more consistent speeds than Wi-Fi alone.

Frequently Asked Questions About Business Internet in Ontario, CA

What should I do if my internet is slow in Ontario?

If you experience slow internet in Ontario, CA, start by running a speed test to compare your actual speeds to what you pay for. Restart your router, check for firmware updates, and ensure your equipment supports your plan's speed. If problems persist, contact your provider's technical support. If the issue is chronic, it may be time to consider switching to a different business internet provider.

What is the cheapest internet option in Ontario?

The most affordable business internet plans in Ontario, CA start around $25-$35 per month for basic speeds. Some providers also participate in the Affordable Connectivity Program, which provides eligible low-income households with a monthly discount on internet service. Check with each provider about low-income assistance programs and entry-level plan pricing.

How long does internet installation take in Ontario?

Installation timelines for business internet in Ontario, CA typically range from three to fourteen days after ordering, depending on the provider and the type of connection being installed. Self-installation options are available from some providers and can be completed in under an hour. Ask about installation options and scheduling when you call.

What business internet providers are available in Ontario, CA?

There are currently 6 business internet providers serving Ontario, CA. These include AT&T Business, Comcast Business, Spectrum Business, Verizon Business, and others. Availability varies by address, so we recommend calling each provider to confirm they serve your specific location.

Do Ontario internet providers offer senior discounts?

Some internet providers in Ontario, California offer discounted plans for seniors or participate in programs that reduce costs for qualifying customers. AT&T Access, Spectrum Internet Assist, and Comcast Internet Essentials are examples of reduced-cost plans. Contact each provider to ask about eligibility requirements and available discounts for seniors and low-income residents.

Can I bundle internet with TV and phone service in Ontario?

Yes, several business internet providers in Ontario, California offer bundle packages that combine internet with cable TV, streaming services, and home phone. Bundling can save $10-$30 per month compared to purchasing services separately. Ask each provider about current bundle options and pricing when checking availability.