Area Code +84-4-(40000000...49999999) located in Ha Noi, more detail is as below. Place International Dialing Code : 84 International Prefix : 00 National Prefix : 0 National Destination Code : 4 Subscriber Number From : 40000000 Subscriber Number To : 49999999 National Destination Code Length : 1 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 : Ha Noi Timezone : Asia/Ho_Chi_Minh Coordinated Universal Time : +07:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 21.0300 Longitude : 105.8500 ‹ previous : +84-4-(30000000...39999999) next › : +84-4-(60000000...69999999) Dialling Instructions For trunk calls: 0 4 40000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 84 4 40000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 40000000 ~ 49999999 (Count: 10,000,000) Example: +84-4-40000000 / 0084-4-40000000 (04-40000000 / 0-4-40000000) +84-4-40000001 / 0084-4-40000001 (04-40000001 / 0-4-40000001) +84-4-40000002 / 0084-4-40000002 (04-40000002 / 0-4-40000002) +84-4-40000003 / 0084-4-40000003 (04-40000003 / 0-4-40000003) +84-4-40000004 / 0084-4-40000004 (04-40000004 / 0-4-40000004) ...+84-4-xxxxxxxx / 0084-4-xxxxxxxx (04-xxxxxxxx / 0-4-xxxxxxxx) ...+84-4-49999995 / 0084-4-49999995 (04-49999995 / 0-4-49999995) +84-4-49999996 / 0084-4-49999996 (04-49999996 / 0-4-49999996) +84-4-49999997 / 0084-4-49999997 (04-49999997 / 0-4-49999997) +84-4-49999998 / 0084-4-49999998 (04-49999998 / 0-4-49999998) +84-4-49999999 / 0084-4-49999999 (04-49999999 / 0-4-49999999)