+1-301-(3580000...3580999), Marlboro, Maryland

• For trunk calls: 0 301 3580000 (Trunk Code + National Destination Code + Subscriber Number)
• For international calls: 011 1 301 3580000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)

3580000 ~ 3580999 (العدد: 1,000)

Example:

• +1-301-3580000 / 0111-301-3580000 (1301-3580000 / 1-301-3580000)
• +1-301-3580001 / 0111-301-3580001 (1301-3580001 / 1-301-3580001)
• +1-301-3580002 / 0111-301-3580002 (1301-3580002 / 1-301-3580002)
• +1-301-3580003 / 0111-301-3580003 (1301-3580003 / 1-301-3580003)
• +1-301-3580004 / 0111-301-3580004 (1301-3580004 / 1-301-3580004)
• ...
• +1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx)
• ...
• +1-301-3580995 / 0111-301-3580995 (1301-3580995 / 1-301-3580995)
• +1-301-3580996 / 0111-301-3580996 (1301-3580996 / 1-301-3580996)
• +1-301-3580997 / 0111-301-3580997 (1301-3580997 / 1-301-3580997)
• +1-301-3580998 / 0111-301-3580998 (1301-3580998 / 1-301-3580998)
• +1-301-3580999 / 0111-301-3580999 (1301-3580999 / 1-301-3580999)