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The Amateur Radio Digital Communications corporation (ARDC) is a non-profit California corporation that owns the AMPRNet ( and It was formed to encourage and foster the development of Amateur Radio digital networking. You may contact ARDC by sending email to

Note that ARDC is not an Internet Service Provider. It does not provide any networking access or facilities. It manages and allocates subnets of network 44 (AMPRNet), to interested Amateur Radio operators. Persons who obtain an allocation of address space on AMPRNet must make their own arrangements for connectivity and Internet service.

ARDC also has a philanthropic arm which grants funding to organizations in support of related project and scholarships.