North American Industry Classification System (NAICS) Codes
518210 - Data Processing, Hosting, and Related Services
519130 - Internet Publishing and Broadcasting and Web Search Portals
541330 - Engineering Services
541430 - Graphic Design Services
541490 - Other Specialized Design Services
541511 - Custom Computer Programming Services
541512 - Computer Systems Design Services
541513 - Computer Facilities Management Services
541519 - Other Computer Related Services
541611 - Administrative Management and General Management Consulting Services
541618 - Other Management Consulting Services
541690 - Other Scientific and Technical Consulting Services
541990 - All Other Professional, Scientific, and Technical Services
561110 - Office Administrative Services
561210 - Facilities Support Services
561311 - Employment Placement Agencies
561320 - Temporary Help Services
561410 - Document Preparation Services
561421 - Telephone Answering Services
561422 - Telemarketing Bureaus and Other Contact Centers
561499 - All Other Business Support Services
561612 - Security Guards and Patrol Services
561920 - Convention and Trade Show Organizers
561990 - All Other Support Services (Visitors, Conventions, Meetings)
611699 - All Other Miscellaneous Schools and Instruction
811212 - Computer and Office Machine Repair and Maintenance