Area Code +81-158-(640000...649999) located in Monbetsu, Hokkaido (01), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 158 Subscriber Number From : 640000 Subscriber Number To : 649999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : NTT East Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) Region Code : 01 Region Name : Hokkaido City : Monbetsu Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 44.3600 Longitude : 143.3500 ‹ previous : +81-158-(620000...629999) next › : +81-158-(650000...659999) Dialling Instructions For trunk calls: 0 158 640000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 158 640000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 640000 ~ 649999 (Count: 10,000) Example: +81-158-640000 / 01081-158-640000 (0158-640000 / 0-158-640000) +81-158-640001 / 01081-158-640001 (0158-640001 / 0-158-640001) +81-158-640002 / 01081-158-640002 (0158-640002 / 0-158-640002) +81-158-640003 / 01081-158-640003 (0158-640003 / 0-158-640003) +81-158-640004 / 01081-158-640004 (0158-640004 / 0-158-640004) ...+81-158-xxxxxx / 01081-158-xxxxxx (0158-xxxxxx / 0-158-xxxxxx) ...+81-158-649995 / 01081-158-649995 (0158-649995 / 0-158-649995) +81-158-649996 / 01081-158-649996 (0158-649996 / 0-158-649996) +81-158-649997 / 01081-158-649997 (0158-649997 / 0-158-649997) +81-158-649998 / 01081-158-649998 (0158-649998 / 0-158-649998) +81-158-649999 / 01081-158-649999 (0158-649999 / 0-158-649999)