Mci Telecommunications Corporations

Mci Telecommunications Corporations is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Business Services
• Telecommunications Services

North American Industry Classification System (NAICS) Categories:

• Wired Telecommunications Carriers > Telecommunications Services
• All Other Business Support Services

Standard Industry Classification (SIC) Categories:

• Telephone Communications, Except Radio > Telecommunications Services
• Business Services, Nec