HTTP response header

A header containing email authentication results like SPF DKIM and DMARC

Header usage statistics

x-arc response header information and usage statistics.

Websites using header x-arc3,149
Percentage of websites that use x-arc header<0.1%
Total discovered header values5
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country US

x-arc Directives

x-arc directives value information and usage statistics

DirectiveShareWebsites countUnique Values

Distribution by websites popularity

x-arc detection in the top websites by popularity

Top 10k sites4 websites
Top 100k sites51 websites
Top 1m sites65 websites

Websites utilizing x-arc

List of websites that use x-arc header

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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common x-arc header values

Header valueValue prevalence
Inter Tenebras Et Lucum0.03%