The multiorganization class was reserved for large organizations, especially international organizations, that did not fit easily into the other categories.

The .arpa domain was originally intended for existing ARPA-Internet hosts and was expected to be phased out once hosts moved into other domains. It was later retained and repurposed as an infrastructure top-level domain for technical uses, including reverse DNS mapping.

By 1994, RFC 1591 described the top-level

1.Previous
3.Next