Looking for the best Dark Fiber providers in Bellevue in Washington, United States? Here's your ultimate guide to making an informed choice.
What is Dark Fiber?
Dark Fiber, also known as 'unlit fiber' or 'black fiber', refers to fiber optic cables that have been installed but are not currently in use. These unused cables are leased to businesses, which then install their own equipment to 'light' the fiber and transmit data, creating a private, high-speed network.
Dark Fiber providers are highly dependent on the availability of specific network infrastructure in a given area. The presence of unused fiber optic cables, particularly in densely populated or high-traffic regions, determines the feasibility of offering dark fiber services. This location-based nature means that businesses closer to major cities are more likely to access these services.
Overview of Dark Fiber Providers in Bellevue, Washington, United States
There are many Dark Fiber providers to choose from in Bellevue, Washington, United States, with an estimated 30 available based on Lightyear’s network intelligence—the industry’s most comprehensive dataset.
Actual provider availability also depends on fiber infrastructure near a specific address. While many providers exist citywide, not all are quote-ready for every location. Comparing options can quickly become overwhelming.
To help simplify your research, we've compiled a definitive list of providers offering Dark Fiber in Bellevue, which you can explore below.
You can also schedule a demo with the Lightyear team for expert support navigating telecom procurement. Provider availability differs significantly by location, and Lightyear’s network intelligence helps businesses identify the right-fit options based on real infrastructure data.

Local Telcos in Bellevue, with Dark Fiber
Local telcos are telecommunications companies that offer wireline telephone services throughout the Bellevue region in Washington, United States. With extensive fiber infrastructure, they are ideal providers for Dark Fiber, capable of offering service across larger areas compared to regular providers, which may only cover specific regions of the city.

The local telco(s) in Bellevue that offer Dark Fiber include:
- Lumen Technologies: A global technology company offering networking, edge cloud, security, and managed services. Their Dark Fiber solutions provide scalable, private network infrastructure for businesses.
- Ziply Fiber: A fiber-optic internet service provider in the Pacific Northwest, offering high-speed internet plans with no data caps and low latency.
Local Cable Companies in Bellevue with Dark Fiber
Local cable companies originally built cable television infrastructure throughout Bellevue, which they now use to deliver ISP and business connectivity services. While their residential services typically rely on coaxial cables, their enterprise offerings—like Dark Fiber—are usually delivered over fiber infrastructure.
Availability depends on the cable provider's network footprint, with some services like DIA offering broader coverage than others. Often, a city’s local cable companies, like their local telcos, will be able to provide Dark Fiber connectivity throughout the city.

The cable company(ies) in Bellevue that offer Dark Fiber include:
- Comcast: A major telecommunications company offering a range of services, including high-speed internet, cable TV, and enterprise solutions.
- Cox Communications: Provides residential and business connectivity services, including high-speed internet and cable TV, with a focus on customer satisfaction.
Other Network Providers with Dark Fiber in Bellevue
Finally, a network provider is a company that delivers Dark Fiber by leveraging a mix of technologies to offer flexible, business-focused solutions. Unlike local telcos and cable companies with citywide infrastructure, these providers may only cover specific areas depending on network availability.

There are many network providers in Bellevue that offer Dark Fiber to choose from. Here's a quick look at all of them based on our network intelligence:
- 2pifi: Specializes in providing high-speed internet and network solutions for businesses.
- American Broadband: Offers a range of broadband services, including fiber-optic internet for residential and business customers.
- AT&T: A leading telecommunications company providing internet, TV, and business solutions.
- Cox Communications: Delivers high-speed internet, cable TV, and business connectivity services.
- Crown Castle: Provides infrastructure solutions, including fiber networks and small cell technology.
- ExteNet Systems: Specializes in distributed network systems for enhanced connectivity.
- Hood Canal Communications: Offers fiber-optic internet and other telecommunications services in the Pacific Northwest.
- Lightcurve: Provides high-speed internet and network solutions tailored for businesses.
- Midco: Delivers internet, cable TV, and business services across the Midwest.
- Nextlink Internet: Offers high-speed internet and voice services for residential and business customers.
- PocketiNet Communications: Provides fiber-optic internet and other connectivity solutions in the Pacific Northwest.
- Quantum Fiber: A next-generation fiber-optic internet provider for residential and business customers.
- Sparklight: Offers high-speed internet, cable TV, and phone services.
- Spectrotel: Provides managed services and network solutions for businesses.
- Spectrum: A major provider of internet, TV, and voice services for residential and business customers.
- Symplified Technologies: Specializes in providing customized network solutions for businesses.
- T-Mobile: Offers wireless voice, messaging, and data services, along with business solutions.
- Threshold Communications: Provides high-speed internet and network solutions for businesses.
- Towerstream: Delivers fixed wireless broadband services for businesses.
- TPx Communications: Offers managed IT, unified communications, and network services.
- Verizon: A global leader in delivering innovative communications and technology solutions.
- Webpass: Provides high-speed internet services for residential and business customers.
- Wholesail Networks: Specializes in providing fiber-optic network solutions for businesses.
- Windstream: Offers advanced network communications and technology solutions for businesses.
- Zayo: Provides fiber and bandwidth connectivity, colocation, and cloud infrastructure services.
- Zito Media: Delivers high-speed internet, cable TV, and phone services.
Overall Connectivity Score in Bellevue, Washington, United States: High
The high connectivity score in Bellevue signifies robust provider availability, extensive fiber infrastructure, and healthy competition. For businesses seeking Dark Fiber, this translates to more choices and competitive pricing. However, selecting the right provider still hinges on location-specific availability and unique business needs, making procurement tools like Lightyear essential for streamlining the selection process.
Use Lightyear to Find the Perfect Provider
Interested in accessing the full list of providers at the best prices? Lightyear's platform offers unparalleled network intelligence, helping you identify the best Dark Fiber providers in Bellevue. With real-time data, expert support, and a user-friendly interface, Lightyear simplifies telecom procurement, ensuring you find the perfect fit for your business needs.