Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Frequently Asked Questions

If you don't find the answer to your question on these pages, send us an email, call (301) 975-NIST, or write to Public Inquiries, NIST, 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070.

NIST Top 10 Most Frequently Asked Questions:

 

Other FAQ pages on specific topics:

Created July 13, 2009, Updated December 6, 2019