Access-Control-Max-Age

HTTP response header

This header gives the time for which results of a CORS preflight request that checks to see if the CORS protocol is understood and a server is aware using specific methods and headers can be cached. (Indicates how long the results of a preflight request can be cached)

Header usage statistics

Access-Control-Max-Age response header information and usage statistics.

Websites using header Access-Control-Max-Age94,830
Percentage of websites that use Access-Control-Max-Age header<0.1%
Total discovered header values251
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country US

Access-Control-Max-Age Directives

Access-Control-Max-Age directives value information and usage statistics

DirectiveShareWebsites countUnique Values

Distribution by websites popularity

Access-Control-Max-Age detection in the top websites by popularity

Top 10k sites89 websites
Top 100k sites650 websites
Top 1m sites3,893 websites

Websites utilizing Access-Control-Max-Age

List of websites that use Access-Control-Max-Age header

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Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common Access-Control-Max-Age header values

Header valueValue prevalence
259200019.22%
100016.54%
360014.41%
8640013.75%
172800011.68%
18006.55%
30004.89%
02.62%
6002.33%
36288001.14%
-10.81%
3000.53%
72000.51%
315360000.48%
10.43%
600.31%
1728000.27%
6048000.22%
12096000.22%
600000.20%