What is sierra tel? Sierra Tel is the premier Internet service provider throughout Eastern Madera and Mariposa counties. *Prices listed do not include cost of required telephone service. Service availability and internet speed will depend on location.How to call sierra leone phone numbers? To call in Sierra Leone, the following format is used: xxxxxx - Calls within an area code 0yy xxxxxx - Calls within Sierra Leone +232 yy xxxxxx - Calls from outside Sierra LeoneDoes sierra tel internet offer internet service in california? Sierra Tel Internet offers internet service within the state of California. DSL internet from Sierra Tel Internet is available to an estimated 36,000 people, making it the 99th largest residential DSL provider in the U.S. by coverage area. In addition to DSL broadband, Sierra Tel Internet also offers fiber and copper internet service.
Sierratel. September 23, 2020 ·. PUBLIC NOTICE. Sierratel regrets to inform its customers and the general public that a cargo vehicle has crashed on its fiber optic installation at Congo Cross bridge, consequently disrupting their Internet data services. This is the third outage Sierratel has experienced within three weeks.