I just went to the Motorola page:
Moto X - Pure Edition (GSM Unlocked with T-Mo SIM - XT1095):
GSM/GPRS/EDGE (850, 900, 1800, 1900 MHz)
UMTS/HSPA+ (850, 900, 1700 (AWS), 1900, 2100 MHz)
4G LTE (2, 3, 4, 5, 7, 17)
Is this a recent change or were the missing bands a typo?