X-CDN

HTTP response header

X-CDN is an HTTP header which is the name describing the CDN being used. Example values are Incapsula fastly cloudfront and level3. It is simply informational

Header usage statistics

X-CDN response header information and usage statistics.

Websites using header X-CDN149,386
Percentage of websites that use X-CDN header0.15%
Total discovered header values102
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country US

X-CDN Directives

X-CDN directives value information and usage statistics

DirectiveShareWebsites countUnique Values

Connected technologies

Technologies that utilize the header

Fastly, category Content Delivery Networks, total 419,657 websites
Akamai, category Content Delivery Networks, total 186,429 websites
Incapsula, category Security Solutions, total 104,527 websites
Imperva CDN, category Security Solutions, total 86,253 websites
ZenEdge, category Security Solutions, total 64,628 websites

Distribution by websites popularity

X-CDN detection in the top websites by popularity

Top 10k sites112 websites
Top 100k sites1,037 websites
Top 1m sites6,545 websites

Websites utilizing X-CDN

List of websites that use X-CDN 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 X-CDN header values

Header valueValue prevalence
Imperva57.73%
Served-By-Zenedge41.10%
WCWS Internet Inc0.21%
fastly0.15%
10.09%
edgecast0.08%
akamai0.08%
iponly0.06%
5centsCDN0.05%
XLabs Security0.05%
Served-By-Akamai0.03%
CPD0.03%
b1.cfvn66.com0.03%
cloudflare0.02%
Served by myself0.02%
nyc-anycast0.02%
AWSWeb-10.02%
Incapsula0.02%
-0.01%
highwinds0.01%