At&T

At&T is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Cellular & Mobile Telephone Service
• Telephones Communications Services
• Internet Service And Access Providers

North American Industry Classification System (NAICS) Categories:

• Wired Telecommunications Carriers > Local & Long Distance Telephone Service
• Wired Telecommunications Carriers > Internet Service Providers
• Wireless Telecommunications Carriers (Except Satellite) > Cellular & Mobile Phone Service Companies
• All Other Telecommunications > Internet Service Providers

Standard Industry Classification (SIC) Categories:

• Radiotelephone Communications > Cellular & Mobile Phone Service Companies
• Telephone Communications, Except Radio > Local & Long Distance Telephone Service
• Information Retrieval Services > Internet Services > Internet Service And Access Providers