Area Code +81-428-(660000...669999) located in Sagamihara, Kanagawa (14), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 428 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 : SoftBank Telecom Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) Region Code : 14 Region Name : Kanagawa City : Sagamihara Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 35.5700 Longitude : 139.3700 ‹ previous : +81-428-(650000...659999) next › : +81-428-(670000...679999) Dialling Instructions For trunk calls: 0 428 660000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 428 660000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 660000 ~ 669999 (Count: 10,000) Example: +81-428-660000 / 01081-428-660000 (0428-660000 / 0-428-660000) +81-428-660001 / 01081-428-660001 (0428-660001 / 0-428-660001) +81-428-660002 / 01081-428-660002 (0428-660002 / 0-428-660002) +81-428-660003 / 01081-428-660003 (0428-660003 / 0-428-660003) +81-428-660004 / 01081-428-660004 (0428-660004 / 0-428-660004) ...+81-428-xxxxxx / 01081-428-xxxxxx (0428-xxxxxx / 0-428-xxxxxx) ...+81-428-669995 / 01081-428-669995 (0428-669995 / 0-428-669995) +81-428-669996 / 01081-428-669996 (0428-669996 / 0-428-669996) +81-428-669997 / 01081-428-669997 (0428-669997 / 0-428-669997) +81-428-669998 / 01081-428-669998 (0428-669998 / 0-428-669998) +81-428-669999 / 01081-428-669999 (0428-669999 / 0-428-669999)