HTTP response header

Header usage statistics

X-ac response header information and usage statistics.

Websites using header X-ac 643,253
Percentage of websites that use X-ac header 0.65%
Total discovered header values 117
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Distribution by websites popularity

X-ac detection in the top websites by popularity

Top 10k sites 46 websites
Top 100k sites 449 websites
Top 1m sites 7,202 websites

Websites utilizing X-ac

List of websites that use X-ac header

Domain Country Rank Contacts
wordpress.com United States of America 68
s-origin.wordpress.com United States of America 76
wp.me United States of America 92
en.wordpress.com United States of America 176
v0.wordpress.com United States of America 189
automattic.com United States of America 202
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common X-ac header values

Header value Value prevalence
3.bur _bur 47.55%
3.sea _bur 33.63%
3.sea _atomic_bur 5.18%
3.bur _atomic_bur 4.27%
5.bur _atomic_bur 3.61%
1.sea _bur 2.00%
5.bur _bur 1.19%
1.bur _bur 0.40%
2.bur _atomic_bur 0.33%
1.bur _atomic_bur 0.32%
4.bur _atomic_bur 0.29%
1.sea _atomic_bur 0.23%
3.dfw _dfw 0.21%
2.sea _atomic_bur 0.20%
4.sea _atomic_bur 0.17%
1.hhn _dfw 0.14%
4.bur _bur 0.03%
2.bur _bur 0.03%
3.dfw _atomic_dfw 0.02%
5.dfw _atomic_dfw 0.02%