ICNEA 6421—Internet search service

Where 6421 sits

1. I Information transmission, software and information technology services
2. 64 Internet and related services
3. 642 Internet Information Service
4. 6421 Internet search service

What 6421 includes

• Refers to a special site in the Internet that is specifically used to help people find information stored on other sites.
• Includes the following Internet search service activities：
• Internet Comprehensive search service;
• Internet Vertical search service;
• Internet content search service;
• Semantic analysis and search services;
• Intelligent search system;
• Other Internet search services.

6421 in other systems