ER

HTTP response header

Header usage statistics

ER response header information and usage statistics.
Websites using header ER2
Percentage of websites that use ER header<0.1%
Total discovered header values2
Header uses directivesNo
Header values are unique or randomYes
Most popular in the country United States

ER Directives

ER directives value information and usage statistics
DirectiveShareWebsites countUnique Values

ER header usage distribution by website rank



Geographical Distribution

Header usage distribution by websites across the globe.



Websites utilizing ER

List of websites that use ER header
DomainCountryRankContacts
www.usa.canon.com United States6,427
shop.usa.canon.com United States70,149
See full domain list

Common header values

List of top common ER header values
Header valueValue prevalence
shop_Catchall50.00%
www_Catchall50.00%