Area Code +84-55-(4000000...4999999) located in Quang Ngai, more detail is as below. Place International Dialing Code : 84 International Prefix : 00 National Prefix : 0 National Destination Code : 55 Subscriber Number From : 4000000 Subscriber Number To : 4999999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : VTC Click here to buy Vietnam Area Code Database Other Information Language Code : vi (Vietnamese) Country Number : 704 (Vietnam) Country Code : VN (Vietnam) City : Quang Ngai Timezone : Asia/Ho_Chi_Minh Coordinated Universal Time : +07:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 15.1200 Longitude : 108.8100 ‹ previous : +84-55-(3000000...3999999) next › : +84-55-(6000000...6999999) Dialling Instructions For trunk calls: 0 55 4000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 84 55 4000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4000000 ~ 4999999 (Count: 1,000,000) Example: +84-55-4000000 / 0084-55-4000000 (055-4000000 / 0-55-4000000) +84-55-4000001 / 0084-55-4000001 (055-4000001 / 0-55-4000001) +84-55-4000002 / 0084-55-4000002 (055-4000002 / 0-55-4000002) +84-55-4000003 / 0084-55-4000003 (055-4000003 / 0-55-4000003) +84-55-4000004 / 0084-55-4000004 (055-4000004 / 0-55-4000004) ...+84-55-xxxxxxx / 0084-55-xxxxxxx (055-xxxxxxx / 0-55-xxxxxxx) ...+84-55-4999995 / 0084-55-4999995 (055-4999995 / 0-55-4999995) +84-55-4999996 / 0084-55-4999996 (055-4999996 / 0-55-4999996) +84-55-4999997 / 0084-55-4999997 (055-4999997 / 0-55-4999997) +84-55-4999998 / 0084-55-4999998 (055-4999998 / 0-55-4999998) +84-55-4999999 / 0084-55-4999999 (055-4999999 / 0-55-4999999)