HTTP response header

Header usage statistics

X-ac response header information and usage statistics.
Websites using header X-ac509,192
Percentage of websites that use X-ac header0.76%
Total discovered header values235
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
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
6.bur _bur MISS53.00%
6.bur _bur HIT20.50%
3.bur _atomic_bur MISS4.36%
5.bur _atomic_bur MISS4.10%
5.bur _bur MISS3.15%
6.bur _bur STALE1.91%
3.bur _bur MISS1.90%
1.bur _bur MISS1.43%
3.bur _atomic_bur BYPASS1.33%
5.bur _atomic_bur BYPASS1.16%
5.bur _atomic_bur HIT0.78%
3.bur _atomic_bur HIT0.75%
3.bur _atomic_bur STALE0.71%
1.bur _atomic_bur MISS0.57%
2.bur _atomic_bur MISS0.51%
4.bur _atomic_bur MISS0.48%
5.bur _atomic_bur STALE0.43%
6.bur _atomic_bur MISS0.31%
6.bur _bur EXPIRED0.22%
6.bur _atomic_bur BYPASS0.18%