+1-301-(3050000...3059999), Frederick, Maryland

• For trunk calls: 0 301 3050000 (Trunk Code + National Destination Code + Subscriber Number)
• For international calls: 011 1 301 3050000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)

3050000 ~ 3059999 (شمارش: 10,000)

Example:

• +1-301-3050000 / 0111-301-3050000 (1301-3050000 / 1-301-3050000)
• +1-301-3050001 / 0111-301-3050001 (1301-3050001 / 1-301-3050001)
• +1-301-3050002 / 0111-301-3050002 (1301-3050002 / 1-301-3050002)
• +1-301-3050003 / 0111-301-3050003 (1301-3050003 / 1-301-3050003)
• +1-301-3050004 / 0111-301-3050004 (1301-3050004 / 1-301-3050004)
• ...
• +1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx)
• ...
• +1-301-3059995 / 0111-301-3059995 (1301-3059995 / 1-301-3059995)
• +1-301-3059996 / 0111-301-3059996 (1301-3059996 / 1-301-3059996)
• +1-301-3059997 / 0111-301-3059997 (1301-3059997 / 1-301-3059997)
• +1-301-3059998 / 0111-301-3059998 (1301-3059998 / 1-301-3059998)
• +1-301-3059999 / 0111-301-3059999 (1301-3059999 / 1-301-3059999)