+1-301-(3183000...3183999), Bethesda, Maryland

• For trunk calls: 0 301 3183000 (Trunk Code + National Destination Code + Subscriber Number)
• For international calls: 011 1 301 3183000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)

3183000 ~ 3183999 (العدد: 1,000)

Example:

• +1-301-3183000 / 0111-301-3183000 (1301-3183000 / 1-301-3183000)
• +1-301-3183001 / 0111-301-3183001 (1301-3183001 / 1-301-3183001)
• +1-301-3183002 / 0111-301-3183002 (1301-3183002 / 1-301-3183002)
• +1-301-3183003 / 0111-301-3183003 (1301-3183003 / 1-301-3183003)
• +1-301-3183004 / 0111-301-3183004 (1301-3183004 / 1-301-3183004)
• ...
• +1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx)
• ...
• +1-301-3183995 / 0111-301-3183995 (1301-3183995 / 1-301-3183995)
• +1-301-3183996 / 0111-301-3183996 (1301-3183996 / 1-301-3183996)
• +1-301-3183997 / 0111-301-3183997 (1301-3183997 / 1-301-3183997)
• +1-301-3183998 / 0111-301-3183998 (1301-3183998 / 1-301-3183998)
• +1-301-3183999 / 0111-301-3183999 (1301-3183999 / 1-301-3183999)