Area Code +81-439-(910000...919999) located in Kisarazu, Chiba (12), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 439 Subscriber Number From : 910000 Subscriber Number To : 919999 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 : Fusion Communications Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) Region Code : 12 Region Name : Chiba City : Kisarazu Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 35.3800 Longitude : 139.9200 ‹ previous : +81-439-(900000...909999) next › : +81-442-(000000...009999) Dialling Instructions For trunk calls: 0 439 910000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 439 910000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 910000 ~ 919999 (Count: 10,000) Example: +81-439-910000 / 01081-439-910000 (0439-910000 / 0-439-910000) +81-439-910001 / 01081-439-910001 (0439-910001 / 0-439-910001) +81-439-910002 / 01081-439-910002 (0439-910002 / 0-439-910002) +81-439-910003 / 01081-439-910003 (0439-910003 / 0-439-910003) +81-439-910004 / 01081-439-910004 (0439-910004 / 0-439-910004) ...+81-439-xxxxxx / 01081-439-xxxxxx (0439-xxxxxx / 0-439-xxxxxx) ...+81-439-919995 / 01081-439-919995 (0439-919995 / 0-439-919995) +81-439-919996 / 01081-439-919996 (0439-919996 / 0-439-919996) +81-439-919997 / 01081-439-919997 (0439-919997 / 0-439-919997) +81-439-919998 / 01081-439-919998 (0439-919998 / 0-439-919998) +81-439-919999 / 01081-439-919999 (0439-919999 / 0-439-919999)