Abstract: Internetworking of a set of Content Delivery Networks CDN (CDN1, CDN2) is obtained by employing interface components intended to be each associated to a network (CDN1) in the set and co-operating according to a Content Internetworking Gateway (CIG) another components association the set of said interface Services or Domain Name networks. Access of internetworking networks through the Directory Name Service or Domain Name Server (DNS) of the respective network. with at least one (CDN2) of the collect routing data referred similar component in set. Said interface to the them in transferred by Directory Name the respective the contents of network (CIG) of contents and caches which contain networks. The routing components (CIG) Servers clients (CDN1, CDN2) is thus implemented through the Directory Name Service or Domain Name Server (DNS) of the respective network.