HTTP response header

Header usage statistics

X-ac response header information and usage statistics.

Websites using header X-ac 81,768
Percentage of websites that use X-ac header 0.72%
Total discovered header values 65
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 62 websites
Top 100k sites 985 websites
Top 1m sites 7,120 websites

Websites utilizing X-ac

List of websites that use X-ac header

Domain Country Rank Contacts
wordpress.com United States of America 32
wp.me United States of America 51
variety.com United States of America 356
www.news.com.au United States of America 518
automattic.com United States of America 649
washingtoncitypaper.com United States of America 877
See full domain list

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 76.36%
3.bur _atomic_bur 9.00%
5.bur _atomic_bur 7.35%
5.bur _bur 2.03%
1.bur _bur 1.37%
1.bur _atomic_bur 0.99%
2.bur _atomic_bur 0.93%
4.bur _atomic_bur 0.80%
4.bur _bur 0.62%
1.fra _dfw 0.06%
2.bur _bur 0.06%
pressable _atomic_dca 0.05%
3.dca _atomic_dca 0.04%
3.sea _atomic_bur 0.04%
3.dca _dca 0.02%
pressable _dca 0.02%
2.dca _atomic_dca 0.02%
4.dca _atomic_dca 0.02%
3.sjc _atomic_bur 0.02%
1.dca _atomic_dca 0.02%