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file format

10.244.77.219,us-east-1,1,3480,244,1,Match
internalip, region, rttzone, rank, /16, ip_based_zone, whether it matches

rttzone:cartzone is not 1:1. 

lookup = {'us-east-1':{'1':'1', '2':'3', '3':'4'},
		'eu-west-1':{'1':'1', '2':'0', '3':'3'},
		'ap-northeast-1':{'1':'2', '3':'3'},
		'ap-southeast-1':{'1':'2', '2':'1'}}  #converts rtt_az : cart_zone