DSL Extreme
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Contact Us via Phone or Mail

Is your question one of our common issues? If so, click any of the links before contacting us:
Department
Phone Number
Hours of Operation
Chat/Email
Sales & Information (866) 243-8638 8am-7pm PST Send an Email
Business Sales & Info. (800) 949-3759 Available 24 Hours Send an Email
Billing Department (800) 774-3379 Mon-Fri 8:30am-5pm PST Send an Email
High-Speed DSL Support (866) 491-7221 Available 24 Hours Send an Email
Dialup Support (877) 714-7549 Mon-Fri 7am-7pm PST Send an Email
Website Hosting Support (866) 245-5154 Available 24 Hours Send an Email
Fax Number
(818) 206-0326

Mailing Address
DSL Extreme
21540 Plummer Street - Suite A
Chatsworth CA, 91311

Modem Returns
DSL Extreme
21540 Plummer Street - Suite A
Chatsworth CA, 91311

 

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New Webmail Coming Soon

We've got exciting new changes coming to our webmail platform. We've selected a new platform that we will be transitioning to in the next few months. The new platform will include an easy to use Webmail interface, improved privacy and enhanced security. For more information go to www.dslextreme.com/mailchange.
We will email you further instructions as we get closer to the transition in early June.
    
  After one call to the tech dept they were all over it. The speed and courtesy of the tech dept is unreal!  
 

From Dean Y.
 
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  • @jank0 @DSL Extreme Thanks for the prompt resolution!
  • @JimOnderisin My new trueSTREAM from @DSL
    Extreme
    is rocking. Getting 50