Vast Networks — dba CVIN LLC — is one of California's most established fiber optic and telecommunications carriers. For three decades we've engineered, built, and operated thousands of route miles of high-capacity, carrier-grade fiber across the state — the backbone powering the businesses, public agencies, carriers, and mission-critical networks California depends on.
Built, operated, and supported by a California-based team.
Since 1995
Operating in California
California
Headquarters
Fiber Network
Built and operated
400/800 Gbps
Backbone capacity
Trusted across California
Our story began in 1995, when affiliates of independent telephone companies across Central and Northern California joined forces to build shared infrastructure for their industry. That cooperative foundation — and three decades of steady investment since — shaped the far-reaching network we operate today.
Today we operate a 100% fiber optic, carrier-class network reaching deep across California — connecting businesses, schools, healthcare systems, municipalities, public-safety agencies, and fellow carriers. From statewide middle-mile transport to last-mile drops, our DWDM backbone delivers dark fiber, lit fiber, point-to-point, wave, and dedicated connectivity — scaling effortlessly to 400/800 Gbps and beyond.
Headquartered in Fresno and operated by Californians who know the territory, the agencies, and the communities we connect.
High-capacity transport interconnecting regions, providers, and last-mile builds across rural and urban California alike.
Business, education, healthcare, public safety, municipal, and carrier-class customers depend on the same backbone.
Dark fiber, lit fiber, point-to-point, wave, and dedicated internet — engineered to scale up to 400/800 Gbps.
From independent telephone roots to a California fiber backbone, each milestone reflects the same mission: building reliable infrastructure for the businesses, public agencies, carriers, and communities that depend on it.
Cooperative network services supporting rural independent telephone providers.
Cooperative network services supporting rural independent telephone providers.
Learn moreBTOP-funded fiber infrastructure across 18 California counties.
BTOP-funded fiber infrastructure across 18 California counties.
Learn moreExpanded wholesale, enterprise, education, healthcare, and wireless connectivity.
Expanded wholesale, enterprise, education, healthcare, and wireless connectivity.
Learn morePublic-sector connectivity support for California communities and agencies.
Public-sector connectivity support for California communities and agencies.
Learn more1,600+ new fiber miles and 1,500 modernized miles.
1,600+ new fiber miles and 1,500 modernized miles.
Learn moreCarrier-grade fiber infrastructure serving organizations across California.
Carrier-grade fiber infrastructure serving organizations across California.
Learn moreA modern, carrier-class fiber platform engineered for capacity, reliability, and the organizations that depend on it.
Every mile is glass. A pure end-to-end fiber path delivers the lowest latency, highest reliability, and clearest signal available.
A statewide DWDM backbone scales effortlessly from a single circuit to carrier-class capacity — ready for whatever comes next.
Headquartered in Fresno and operated by Californians who know the terrain, the communities, and the agencies we serve.
High-capacity middle-mile routes interconnect regions, providers, and local last-mile builds across the state.
Choose your own optics with dark fiber, or let Vast manage it — plus point-to-point, wave, and dedicated internet.
Education, healthcare, public safety, municipalities, and enterprise rely on Vast for connectivity that cannot go down.
Vast Networks connects communities, businesses, schools, healthcare providers, public agencies, and carriers with reliable, scalable fiber. From statewide middle-mile transport to local municipal builds, we support the networks that keep California's most important organizations online — and ready for what's next.
Talk with Vast Networks about dark fiber, lit fiber, point-to-point connectivity, wave services, or dedicated internet options for your organization.