+1-301-(3120000...3120999), Bethesda, Maryland

• For trunk calls: 0 301 3120000 (Trunk Code + National Destination Code + Subscriber Number)
• For international calls: 011 1 301 3120000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)

3120000 ~ 3120999 (شمارش: 1,000)

Example:

• +1-301-3120000 / 0111-301-3120000 (1301-3120000 / 1-301-3120000)
• +1-301-3120001 / 0111-301-3120001 (1301-3120001 / 1-301-3120001)
• +1-301-3120002 / 0111-301-3120002 (1301-3120002 / 1-301-3120002)
• +1-301-3120003 / 0111-301-3120003 (1301-3120003 / 1-301-3120003)
• +1-301-3120004 / 0111-301-3120004 (1301-3120004 / 1-301-3120004)
• ...
• +1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx)
• ...
• +1-301-3120995 / 0111-301-3120995 (1301-3120995 / 1-301-3120995)
• +1-301-3120996 / 0111-301-3120996 (1301-3120996 / 1-301-3120996)
• +1-301-3120997 / 0111-301-3120997 (1301-3120997 / 1-301-3120997)
• +1-301-3120998 / 0111-301-3120998 (1301-3120998 / 1-301-3120998)
• +1-301-3120999 / 0111-301-3120999 (1301-3120999 / 1-301-3120999)