Area Code +81-439-(680000...689999) 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 : 680000 Subscriber Number To : 689999 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-(670000...679999) next › : +81-439-(690000...699999) Dialling Instructions For trunk calls: 0 439 680000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 439 680000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 680000 ~ 689999 (Count: 10,000) Example: +81-439-680000 / 01081-439-680000 (0439-680000 / 0-439-680000) +81-439-680001 / 01081-439-680001 (0439-680001 / 0-439-680001) +81-439-680002 / 01081-439-680002 (0439-680002 / 0-439-680002) +81-439-680003 / 01081-439-680003 (0439-680003 / 0-439-680003) +81-439-680004 / 01081-439-680004 (0439-680004 / 0-439-680004) ...+81-439-xxxxxx / 01081-439-xxxxxx (0439-xxxxxx / 0-439-xxxxxx) ...+81-439-689995 / 01081-439-689995 (0439-689995 / 0-439-689995) +81-439-689996 / 01081-439-689996 (0439-689996 / 0-439-689996) +81-439-689997 / 01081-439-689997 (0439-689997 / 0-439-689997) +81-439-689998 / 01081-439-689998 (0439-689998 / 0-439-689998) +81-439-689999 / 01081-439-689999 (0439-689999 / 0-439-689999)