Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
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.
Ua (Ub) (%) represents the percentage of the total length of Ua (Ub) to the length of correlated repetitive domain excluding the boundary elements. The figures in the Subdomain column represent the numbers of subdomains in each repetitive domain as defined in the text. Length of subdomain is the average length of subdomains in each repetitive domain separated by boundary elements.
