Welcome to Customer Information Online (CIO)

CIO is designed to give you greater control of your communications - at any time and from any place. You will find it an easier, faster and more reliable way to do business with AT&T. Below are the online tools you'll have access to upon implementation.


Network Information
View detailed information about AT&T network status, assess the performance of your network to help you make timely and informed decisions, and analyze site traffic in real-time to assist in revenue generation, cost savings, or increasing your customer satisfaction levels.

- Performance & Utilization | - Network Status | - Upcoming Scheduled Maintenance


Customer & Network Support
View a history of your company's trouble/service tickets online.

- Ticket Summaries

If you have any questions about your trouble tickets or would like to initiate a trouble ticket, please contact Customer Support via email at rm-managedhostingo@ems.att.com or call 1-877-789-2877, option 1.

Authorized Contact List (ACL)
Follow the links below to view your current authorized company representatives and request an update to the ACL.

- The Importance of the ACL | - Your Current ACL | - Update your organization's ACL


Invoice Inquiry
(Enterprise Web Hosting Customers only)
Download and view your current and previous invoices for your organization.

- Customer Invoices

If you have any questions regarding your invoice, please contact Customer Care via email at rm-lcmtierone@ems.att.com or call 1-877-789-2877, option 1.



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