Att E-911

Att E-911 is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Cellular & Mobile Telephone Service

North American Industry Classification System (NAICS) Categories:

• Wireless Telecommunications Carriers (Except Satellite) > Cellular & Mobile Phone Service Companies

Standard Industry Classification (SIC) Categories:

• Radiotelephone Communications > Cellular & Mobile Phone Service Companies