// External numbering plan structure
// Country: US (United States) 
// Version: 0.01, 14/03/2017 3651ms 
// Version: 1.1, 04/07/2017  Mark service numbers (non geographical numbers, no NDC)

1xxxxxxxxxx
2xxxxxxxxx
3xxxxxxxxx
4xxxxxxxxx
5xxxxxxxxx
6xxxxxxxxx
7xxxxxxxxx
8xxxxxxxxx
9xxxxxxxxx

[Service numbers]
411
611
911
