Contact Customer Support

Support, Global Network Operations Center: noc@us.ntt.net
Telephone: 1-877-NTT-NOC5

Billing: billing@us.ntt.net
Telephone: 1-877-868-8638

Current Customers, Account Management: csm@us.ntt.net
Telephone: 1-877-8NTT-NET

New Customer Sales: sales@us.ntt.net
Telephone: 1-877-8NTT-NET

More information on Customer Support: http://us.ntt.net/support/

Certified Engineering Center (CEC): 1-888-NTT-CEC-1

Support Telephone: 1-888-NTT-CEC-1
Support for Hosted Exchange Customers: 1-888-NTT-CEC-1 Option 1

Billing Telephone: 1-888-341-7867
Billing Support: billing@us.ntt.net

Sales Telephone: 1-888-341-7867 (1-888-EH-1-STOP)
Sales: Please use the contact sales form.