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Contact Us

Tech Support

Internet tech support is available 24 hours a day. All support related questions in regards to your computer, operating system, printer or network should be directed to the product manufacturer or your network technician.

Oakhurst:  

559-641-9000

Mariposa:  

209-966-9888

California Toll Free:  

877-447-7362 (1-877-4ISP-DOC)

Fax:  

559-692-9111

Email:  

support@sti.net

Billing

Please direct all billing related questions to billing@sti.net or call our customer service department.

Customer Service

Lobby Hours
STI is closed on all major holidays

Monday - Friday:

9am - 5pm

Saturday - Sunday:

Closed

Oakhurst Phone:

559-641-9000

Mariposa Phone:

209-966-9888

California Toll Free:

877-638-7787
(1-877-NETS-R-US)

Fax:

559-692-9111

Email:

services@sti.net


SIERRA TEL INTERNET
P.O. Box 11
49260 Chapel Hill Drive #202
Oakhurst, California 93644

Chapel Hill Map

 

STI is the premier DSL and dial-up service provider throughout Eastern Madera and Mariposa counties. Technical Support or Customer Service:
Oakhurst: (559) 641-9000, Mariposa: (209) 966-9888
Other areas toll free: 1 (877) 447-7362, Fax: 559-692-9111
49260 Chapel Hill Drive #202, Oakhurst, California 93644
Email: support@sti.net