Since its allocation to Amateur Radio in the mid-1980's, Internet network 44 (184.108.40.206/8), known as the AMPRNet™, has been used by amateur radio operators to conduct scientific research and to experiment with digital communications over radio with a goal of advancing the state of the art of Amateur Radio networking, and to educate amateur radio operators in these techniques. - www.ampr.org
The AMPRNet is a part of the Internet address space devoted solely for amateur radio operators. Local AMPRNet networks are radio-based networks mostly using packet radio and 802.11 Wi-Fi technologies on amateur radio frequencies to exchange data using the IP protocols. The local and regional radio networks are interconnected over the Internet using a mesh network of tunnels between gateway systems.
The AMPRNet IP network also has its own domain name, ampr.org.