Identify all the CDNs used on a web page or lookup the CDN for a single URL or hostname.
CDN Finder FAQ
How does CDN Finder identify a CDN?
In short, CDN Finder uses DNS, response headers and IP-to-ASN mappings to identify the CDN. Read more about how CDN Finder identifies a CDN in our blog post:
The All New CDN Finder
Does CDN Finder identify CDN for streaming video?
Do all websites use a CDN?
Chapter 22 of the 2022 Web Almanac shows that 29% of websites use a CDN to deliver HTML and 47% of websites that deliver page resources like images, css and fonts from subdomains use a CDN.
2022 Web Almanac - CDN Adoption
Is Amazon ELB a CDN?
No, Amazon Elastic Load Balancer is not a CDN.
Is Azure Front Door a CDN?
Yes, Azure Front Door is a content delivery network, typically used to delivery dynamic content.