What are Industrial Categories?
A 4-digit system of codes is SIC (Standard Industrial Classification). Begun in the 1930s, this system classifies 1,004 industries. Learn more at http://www.naics.com/search.htm
The NTEE (National Taxonomy of Exempt Entities) was begun in the 1980s and is used by the IRS and the National Center for Charitable Statistics (NCCS) to categorize nonprofit organizations. Learn more at http://nccs.urban.org/classification/NTEE.cfm
How would Home Networking and THNC be Classified?
In NAICS, perhaps 541712 — “Physical science research and development laboratories or services (except biotechnology research and development).”
In SIC, perhaps 8299 — “Schools and educational services NEC (not elsewhere classified)” or 9411 “Administration of Educational programs.”
In NTEE, perhaps U99 — “Science & Technology NEC (not elsewhere classified)” — “Use this code for organizations that clearly provide science and technology research services where the major purpose is unclear enough that a more specific code cannot be accurately assigned.”
Abbreviations Used in the Industries List