X-ac

HTTP response header

Header usage statistics

X-ac response header information and usage statistics.
Websites using header X-ac454,961
Percentage of websites that use X-ac header0.77%
Total discovered header values298
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country United States

X-ac Directives

X-ac directives value information and usage statistics
DirectiveShareWebsites countUnique Values

Websites utilizing X-ac

List of websites that use X-ac header
DomainCountryRankContacts
wordpress.com United States68
s-origin.wordpress.com United States76
wp.me United States92
en.wordpress.com United States176
v0.wordpress.com United States189
automattic.com United States202
See full domain list

Common header values

List of top common X-ac header values
Header valueValue prevalence
20.bur _bur MISS31%
20.bur _bur STALE24%
29.bur _bur MISS11%
29.bur _bur STALE8%
20.bur _atomic_bur MISS8%
20.bur _atomic_bur STALE5%
29.bur _atomic_bur MISS2%
20.bur _bur HIT2%
29.bur _atomic_bur STALE1%
29.bur _bur HIT0%
20.bur _atomic_bur BYPASS0%
20.bur _atomic_bur HIT0%
29.bur _atomic_bur BYPASS0%
29.bur _atomic_bur HIT0%
20.bur _bur BYPASS0%
20.bur _shield_cache_dfw MISS0%
29.bur _bur BYPASS0%
29.bur _shield_cache_dfw MISS0%
20.bur _shield_cache_dfw STALE0%
2.sea _atomic_bur MISS0%