asterisk users - Jun 2005 - MySQL: max realistic size of extensions table.

Hi,
I'm using *CVS Head version and read the dialplan from MySQL.
I'm making A-Z termination to over 4000 different country and city codes. I
have 3 different dialing rules depending on the price level of the dialed
number.
Should my extensions table contain 4000 lines? Is this realistic? Or is
there any other (more clever) way doing this?
Regards,
Cenk.
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