For the next few days we will be testing two of our new IPv4 Network Scripts. These scripts are designed to aggregate networks by country or countries.
Both scripts allow you to select from a list of nearly 250 countries (also includes bogon IPs) and aggregate the result. In some cases aggregation can reduce the size of your ACLs by nearly 90%. As an example, as of 1/2/2012 there are 46,805 IPv4 networks in the USA and Canada. Aggregating these will consolidate the result to 4,767 networks.
Here are the locations of the beta versions:
PG2 Format http://www.countryipblocks.net/count..._aggregate.php
IP Range Format: http://www.countryipblocks.net/count..._aggregate.php
The scripts will be available for beta testing for only a few days. Please test and let me know how well they perform.