Three Core

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

• Computers & Equipment Repairs & Maintenance
• Information Search & Retrieval Service

North American Industry Classification System (NAICS) Categories:

• Computer Systems Design Services > Information Management
• Computer And Office Machine Repair And Maintenance

Standard Industry Classification (SIC) Categories:

• Information Retrieval Services
• Computer Maintenance And Repair