+1-301-(3274000...3274999), Upper Marlboro, Maryland

• For trunk calls: 0 301 3274000 (Trunk Code + National Destination Code + Subscriber Number)
• For international calls: 011 1 301 3274000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)

3274000 ~ 3274999 (شمارش: 1,000)

Example:

• +1-301-3274000 / 0111-301-3274000 (1301-3274000 / 1-301-3274000)
• +1-301-3274001 / 0111-301-3274001 (1301-3274001 / 1-301-3274001)
• +1-301-3274002 / 0111-301-3274002 (1301-3274002 / 1-301-3274002)
• +1-301-3274003 / 0111-301-3274003 (1301-3274003 / 1-301-3274003)
• +1-301-3274004 / 0111-301-3274004 (1301-3274004 / 1-301-3274004)
• ...
• +1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx)
• ...
• +1-301-3274995 / 0111-301-3274995 (1301-3274995 / 1-301-3274995)
• +1-301-3274996 / 0111-301-3274996 (1301-3274996 / 1-301-3274996)
• +1-301-3274997 / 0111-301-3274997 (1301-3274997 / 1-301-3274997)
• +1-301-3274998 / 0111-301-3274998 (1301-3274998 / 1-301-3274998)
• +1-301-3274999 / 0111-301-3274999 (1301-3274999 / 1-301-3274999)