•800 Response Information Services
•AT&T
•ATIS
•ATL RespOrg Services
•Brighthouse Networks
•Canadian Radio Television andTelecommunications Commission
•CenturyLink
•Charter Communications
•Comcast
•Cox Communications
•Custom Toll Free
•EarthLink Business
•Evolving Systems
•iconectiv
•Idaho Public Utilities Commission
•Integra Telecom
•John Staurulakis, Inc. (JSI)
•Maine Public Utilities Commission
•MA Dept. of Telecommunications & Cable
•Michigan Public Service Commission
•Minnesota Department of Commerce
•Nebraska Public Service Commission
•NENA
•Neustar
•Oregon Public Utility Commission
•Pennsylvania Public Utility Commission
•PHONEWORD
•SMS/800, Inc.
•Sprint
•TCA, Telecom Consulting Associates
•TeleSmart
•T-Mobile
•US Telecom
•Verizon
•Verizon Wireless
•Vonage
•Washington Utilities and TransportationCommission
•Wisconsin Public Service Commission
•XO Communications