Area Code +81-439-(670000...679999) 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 : 670000 Subscriber Number To : 679999 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 : 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-(660000...669999) next › : +81-439-(680000...689999) Dialling Instructions For trunk calls: 0 439 670000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 439 670000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 670000 ~ 679999 (Count: 10,000) Example: +81-439-670000 / 01081-439-670000 (0439-670000 / 0-439-670000) +81-439-670001 / 01081-439-670001 (0439-670001 / 0-439-670001) +81-439-670002 / 01081-439-670002 (0439-670002 / 0-439-670002) +81-439-670003 / 01081-439-670003 (0439-670003 / 0-439-670003) +81-439-670004 / 01081-439-670004 (0439-670004 / 0-439-670004) ...+81-439-xxxxxx / 01081-439-xxxxxx (0439-xxxxxx / 0-439-xxxxxx) ...+81-439-679995 / 01081-439-679995 (0439-679995 / 0-439-679995) +81-439-679996 / 01081-439-679996 (0439-679996 / 0-439-679996) +81-439-679997 / 01081-439-679997 (0439-679997 / 0-439-679997) +81-439-679998 / 01081-439-679998 (0439-679998 / 0-439-679998) +81-439-679999 / 01081-439-679999 (0439-679999 / 0-439-679999)