4323:1     = Pad 4323 once
4323:2     = Pad 4323 twice
4323:3     = Pad 4323 three times
4323:80    = Set Local Preference in AS4323 to 80
4323:100   = Set Local Preference in AS4323 to 100
4323:120   = Set Local Preference in AS4323 to 120
4323:187   = Blackhole Community -- Used only for /32 hosts
4323:666   = Keep with in TWTC backbone
4323:555   = Advertise to External Peers and Backbone Customers