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-RAY7,345,069
Percentage of websites that use CF-RAY header8.52%
Total discovered header valuesMore than 10,000
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country United States

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 11,007,260 websites

CF-RAY header usage distribution by website popularity



Geographical Distribution

Header usage distribution by websites across the globe.






Websites utilizing CF-RAY

List of websites that use CF-RAY header

DomainCountryRankContacts
hugedomains.com United States14
www.hugedomains.com United States14
cdnjs.cloudflare.com United States20
maxcdn.bootstrapcdn.com United States26
cloudflare.com United States27
www.cloudflare.com United States27
See full domain list
Flat price per the report, subscription is not required.

Common header values

List of top common CF-RAY header values

Header valueValue prevalence
-0.00%
7ee2e3b05a6f82c2-IAD0.00%
spb-seed010.00%
5698f562cccbed7f-SJC0.00%
816ddc745c5cc586-SEA0.00%
8063be537c4deb4f-SEA0.00%
7e557d401cb4c5b4-SEA0.00%
7e8f0cc91d1bebaf-SEA0.00%
81084a6839b5c606-SEA0.00%
8159e82eda53c3d5-SEA0.00%
805a27f95ecd27a1-SEA0.00%
8132ca1249c727e6-SEA0.00%
812decf7cf973a56-DME0.00%
81483445bda5225e-ORD0.00%
81212f3baad5eb4f-SEA0.00%
81f5c8b43fd2c39c-SEA0.00%
8057dd497fc4ebfa-SEA0.00%
80bf11b189056805-SEA0.00%
81616d6ae94930c5-SEA0.00%
7e61dcf3ba0e275a-SEA0.00%