format for IP address ranges?

[Eric Hellman]

This is probably an easy question, but when a library supplies IP 
address ranges to an information provider for the purposes of IP 
address authentication, is there a standard or semi-standard format 
for this information? I imagine this might be pretty simple for an 
academic institution, but rather complicated for a corporate library 
or a consortium.

Eric
-- 
Eric Hellman
Openly Informatics, Inc.
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