Internet2 Prefix-Length Policy
The following was sent to the Internet2 operations list on 17 January 2003.
Internet2 encourages its connectors to aggregate advertised prefixes
as an internet best practice. Therefore, we will accept approved IPv4
prefixes up through /27. However, we realize that in unusual special
cases, prefixes more specific than /27 must be advertised, so if there
is an important reason a prefix more specific than /27 must be advertised,
explain your need and we will try to accomodate you.
Since connectors are the only ones from whom specific prefixes are
accepted, this policy applies so far only to Internet2 connectors (i.e.
not to peer networks).