Yahoo!

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

• Internet
• Internet Service And Access Providers

North American Industry Classification System (NAICS) Categories:

• Wired Telecommunications Carriers > Internet Service Providers
• All Other Telecommunications > Internet Service Providers
• Internet Publishing & Broadcasting & Web Search Portals

Standard Industry Classification (SIC) Categories:

• Information Retrieval Services > Internet Services > Internet Service And Access Providers