+1-301-(3273000...3273999), Upper Marlboro, Maryland

• For trunk calls: 0 301 3273000 (Trunk Code + National Destination Code + Subscriber Number)
• For international calls: 011 1 301 3273000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)

3273000 ~ 3273999 (شمارش: 1,000)

Example:

• +1-301-3273000 / 0111-301-3273000 (1301-3273000 / 1-301-3273000)
• +1-301-3273001 / 0111-301-3273001 (1301-3273001 / 1-301-3273001)
• +1-301-3273002 / 0111-301-3273002 (1301-3273002 / 1-301-3273002)
• +1-301-3273003 / 0111-301-3273003 (1301-3273003 / 1-301-3273003)
• +1-301-3273004 / 0111-301-3273004 (1301-3273004 / 1-301-3273004)
• ...
• +1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx)
• ...
• +1-301-3273995 / 0111-301-3273995 (1301-3273995 / 1-301-3273995)
• +1-301-3273996 / 0111-301-3273996 (1301-3273996 / 1-301-3273996)
• +1-301-3273997 / 0111-301-3273997 (1301-3273997 / 1-301-3273997)
• +1-301-3273998 / 0111-301-3273998 (1301-3273998 / 1-301-3273998)
• +1-301-3273999 / 0111-301-3273999 (1301-3273999 / 1-301-3273999)