AMPRNet

right|thumb|Antennas for High-speed Amateur-radio Multimedia Network (HamNET) in Europe, part of the wireless mesh network

The AMPRNet (AMateur Packet Radio Network) or Network 44 is used in amateur radio for packet radio and digital communications between computer networks managed by amateur radio operators. Like other amateur radio frequency allocations, an IP range of ' was provided in 1981 for Amateur Radio Digital Communications' (a generic term) and self-administered by radio amateurs. In 2001, undocumented and dual-use of as a network telescope began, recording the spread of the Code Red II worm in July 2001. In mid-2019, part of IPv4 range was sold off for conventional use, due to IPv4 address exhaustion.