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Managed Network Services & Business Internet in San Bernardino County
California Telecom is headquartered in Chino, San Bernardino County — right in the heart of the Inland Empire. For over 18 years, we have designed, deployed, and managed network infrastructure for businesses across Rancho Cucamonga, Ontario, Fontana, Rialto, Redlands, Upland, Chino Hills, Yucaipa, Highland, Loma Linda, and the High Desert cities of Victorville and Hesperia. If you are in San Bernardino County, we are almost certainly closer than any other qualified MSP.
San Bernardino County is the logistics and manufacturing engine of Southern California — home to massive warehousing and distribution operations along the I-10, I-15, and I-215 corridors, plus dense healthcare (Loma Linda, Arrowhead), education, and government infrastructure. These verticals demand reliable connectivity, segmented security, and fast on-site response when something goes wrong. Our engineers are local to this county, not flying in — they know the carrier coverage, the fiber routes, and the real-world constraints of serving warehouses, clinics, and offices at scale.
Our Home County
Our Chino headquarters puts us minutes from Ontario, Rancho Cucamonga, Chino Hills, and Upland — and within an hour of virtually every business address in San Bernardino County. That proximity matters when you need a truck roll, a hardware swap, a professional WiFi survey, or an emergency response on a Sunday. It also matters for the quieter work: the network design reviews, the quarterly strategy meetings, the vendor coordination that is easier face-to-face than on a call with someone in another state.
California Telecom functions as your outsourced network engineering department. SD-WAN design and management, firewall policy enforcement, WiFi deployment, carrier procurement, and 24/7 monitoring via our Netverge platform with Vergepoint hardware on-site at each of your locations. You get Cisco triple-CCIE and Fortinet NSE7 certified engineers — local.
Network Services Available
Where we serve
Our home county — and the surrounding SoCal markets we cover daily.
Inland Empire
Chino · Ontario · Rancho Cucamonga · Riverside · San Bernardino (serving all of SB + Riverside counties)
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Cities served in San Bernardino County: San Bernardino, Rancho Cucamonga, Chino, Chino Hills, Fontana, Ontario, Rialto, Redlands, Yucaipa, Highland, Upland, Montclair, Loma Linda, Colton, Grand Terrace, Victorville, Hesperia, Apple Valley, Big Bear Lake, and surrounding communities.
Ready to work with a local network engineering team?
Our engineers are headquartered in Chino — in your county. Let us assess your network and show you what a truly local managed network services partner can do.