CF-RAY

HTTP response header

The CF-RAY response header is a unique ID from CloudFlare and indicates that the resource was served through CloudFlare. The CF-Cache-Status response header indicates specifically if the file was from the cache or not. If the value of CF-Cache-Status is HIT then that resource was served from CloudFlare's cache

Header usage statistics

CF-RAY response header information and usage statistics.

Websites using header CF-RAY7,025,670
Percentage of websites that use CF-RAY header7.06%
Total discovered header valuesMore than 10,000
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country US

CF-RAY Directives

CF-RAY directives value information and usage statistics

DirectiveShareWebsites countUnique Values

Connected technologies

Technologies that utilize the header

CloudFlare, category Content Delivery Networks, total 7,036,046 websites

Distribution by websites popularity

CF-RAY detection in the top websites by popularity

Top 10k sites1,981 websites
Top 100k sites19,924 websites
Top 1m sites185,045 websites

Websites utilizing CF-RAY

List of websites that use CF-RAY header

See full domain list
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Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common CF-RAY header values

Header valueValue prevalence
-0.00%
f719e60396f4cb0e41f80651afe7392b0.00%
70ee57ec6d18585a-IAD0.00%
3b1412753f475cc969c37231dd6eaea20.00%
d13b3671cfa213d29caa52a2a69f0da30.00%
71e54da50e299e58-SJC0.00%
71848adfa8a33191-LAX0.00%
719dd86b28017cdf-LAX0.00%
715f1525696a7d23-LAX0.00%
56137e603e72eeba0.00%
5698f562cccbed7f-SJC0.00%
71a35de65f6283bb-MXP0.00%
715d56904cdc5f6d-LAS0.00%
71ae4836ddccf569-SEA0.00%
7198db883c8a7d03-LAX0.00%
71774af47dff7e29-LAX0.00%
64070a4cac66552a-EWR0.00%
718fad4bcaec7e44-LAX0.00%
71a4866eb92a7c2a-LAX0.00%
7162f0215f857e08-LAX0.00%