Mailing address for t1

I'm assuming you're referring to the T1 line, which is a type of high-speed digital telephone line.

The mailing address for T1 lines is typically the address of the telephone company or internet service provider (ISP) that provides the service. Here are a few examples:

• AT&T: AT&T Business Services, 208 S. Akard St., Dallas, TX 75202
• Verizon: Verizon Business, 1095 Avenue of the Americas, New York, NY 10036
• CenturyLink: CenturyLink, 100 CenturyLink Dr., Monroe, LA 71203
• Frontier Communications: Frontier Communications, 222 W. 6th St., Stamford, CT 06901

Please note that these addresses may be subject to change, and it's always best to check with the specific provider for their current mailing address.

If you're looking to order a T1 line or have questions about the service, I recommend contacting the provider directly or visiting their website to find the contact information for their business services department.