Have a large, medium, small or home-based business? Or are you ready to start a new business or grow your existing business? Need customer support about a calling plan, Internet access, website hosting, a billing plan? Try these links to information on our site about AT&T services for your business. Get numbers – many toll-free – to reach AT&T Customer Service representatives.

AT&T Business Customer Service Numbers

AT&T CallVantage® for Small Business

Sales: 866-816-3815

Service: 866-596-8464

Business Billing Inquiries (AT&T billed)

800-342-5288

Business Billing Inquiries (Exchange carrier billed)

800-325-0138

Business Services

Includes Virtual Private Network Service, Dedicated IP Service, Business Internet Services, Business IP Dial Service, Security and Business Continuity Services, Hosting and Applications Services, Voice over IP Services, and Global IP Network Services.

800-248-3632

Customer Service

800-222-0400

DSL Internet Service

877-937-5288

Global Video Service

800-221-7680

Government Markets

Customer Care

Service Provider Identification Number (SPIN)

143001192

See also: Access Reform

TeleConference Services

800-232-1234