I think having "correct" as part of the name is pretty meaningless — nobody purposefully creates a Cpan module that's incorrect.

How about just Net::IP::Range? Or Net::IP::Range::Split? Definitely "range" needs to be in there somewhere since that's what the module deals with; merely calling it Net::IP::Correct makes it sound like it's an alternative to Net::IP but that is "correct" (and thereby implies that Net::IP is in some way incorrect).

Smylers