Area Code +81-439-(730000...739999) 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 : 730000 Subscriber Number To : 739999 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 : Jupiter Telecommunications 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-(720000...729999) next › : +81-439-(770000...779999) Dialling Instructions For trunk calls: 0 439 730000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 439 730000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 730000 ~ 739999 (Count: 10,000) Example: +81-439-730000 / 01081-439-730000 (0439-730000 / 0-439-730000) +81-439-730001 / 01081-439-730001 (0439-730001 / 0-439-730001) +81-439-730002 / 01081-439-730002 (0439-730002 / 0-439-730002) +81-439-730003 / 01081-439-730003 (0439-730003 / 0-439-730003) +81-439-730004 / 01081-439-730004 (0439-730004 / 0-439-730004) ...+81-439-xxxxxx / 01081-439-xxxxxx (0439-xxxxxx / 0-439-xxxxxx) ...+81-439-739995 / 01081-439-739995 (0439-739995 / 0-439-739995) +81-439-739996 / 01081-439-739996 (0439-739996 / 0-439-739996) +81-439-739997 / 01081-439-739997 (0439-739997 / 0-439-739997) +81-439-739998 / 01081-439-739998 (0439-739998 / 0-439-739998) +81-439-739999 / 01081-439-739999 (0439-739999 / 0-439-739999)