Dex

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

• Advertising Directory & Guide
• Advertising Directory & Guide Publishers
• Consultants - Marketing

North American Industry Classification System (NAICS) Categories:

• Marketing Consulting Services
• Advertising Agencies > Directory Advertisers
• Media Representatives > Guides & Directories

Standard Industry Classification (SIC) Categories:

• Radio Television & Publisher's Advertising Representatives > Guides & Directories
• Management Consulting > Marketing & Sales Consulting