Help & Support

Operating Hours

At Sierra Tel we are committed to the health and safety of our customers and employees during the COVID-19 pandemic.

In order to better protect our employees and you during this uncertain time, please note that the Mariposa and Oakhurst Business Office Lobbies are temporarily closed to normal walk-in traffic until further notice.

Lobby Hours: Monday – Friday, 8:00am to 5:00pm

Telephone Support: Monday – Friday, 8:00am to 6:00pm

Technical Support is available via telephone 24 hours a day, 7 days a week.


Phone: 559-683-4611, 209-966-3636 or toll free at 1-877-658-4611

Fax: 559-683-6913 or 209-966-4770