Area Code +81-158-(660000...669999) 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 : 660000 Subscriber Number To : 669999 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-(650000...659999) next › : +81-158-(670000...679999) Dialling Instructions For trunk calls: 0 158 660000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 158 660000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 660000 ~ 669999 (Count: 10,000) Example: +81-158-660000 / 01081-158-660000 (0158-660000 / 0-158-660000) +81-158-660001 / 01081-158-660001 (0158-660001 / 0-158-660001) +81-158-660002 / 01081-158-660002 (0158-660002 / 0-158-660002) +81-158-660003 / 01081-158-660003 (0158-660003 / 0-158-660003) +81-158-660004 / 01081-158-660004 (0158-660004 / 0-158-660004) ...+81-158-xxxxxx / 01081-158-xxxxxx (0158-xxxxxx / 0-158-xxxxxx) ...+81-158-669995 / 01081-158-669995 (0158-669995 / 0-158-669995) +81-158-669996 / 01081-158-669996 (0158-669996 / 0-158-669996) +81-158-669997 / 01081-158-669997 (0158-669997 / 0-158-669997) +81-158-669998 / 01081-158-669998 (0158-669998 / 0-158-669998) +81-158-669999 / 01081-158-669999 (0158-669999 / 0-158-669999)