+1-301-(3549000...3549999), Rockville, Maryland

• For trunk calls: 0 301 3549000 (Trunk Code + National Destination Code + Subscriber Number)
• For international calls: 011 1 301 3549000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)

3549000 ~ 3549999 (شمارش: 1,000)

Example:

• +1-301-3549000 / 0111-301-3549000 (1301-3549000 / 1-301-3549000)
• +1-301-3549001 / 0111-301-3549001 (1301-3549001 / 1-301-3549001)
• +1-301-3549002 / 0111-301-3549002 (1301-3549002 / 1-301-3549002)
• +1-301-3549003 / 0111-301-3549003 (1301-3549003 / 1-301-3549003)
• +1-301-3549004 / 0111-301-3549004 (1301-3549004 / 1-301-3549004)
• ...
• +1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx)
• ...
• +1-301-3549995 / 0111-301-3549995 (1301-3549995 / 1-301-3549995)
• +1-301-3549996 / 0111-301-3549996 (1301-3549996 / 1-301-3549996)
• +1-301-3549997 / 0111-301-3549997 (1301-3549997 / 1-301-3549997)
• +1-301-3549998 / 0111-301-3549998 (1301-3549998 / 1-301-3549998)
• +1-301-3549999 / 0111-301-3549999 (1301-3549999 / 1-301-3549999)