Area Code +81-439-(720000...729999) 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 : 720000 Subscriber Number To : 729999 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-(710000...719999) next › : +81-439-(730000...739999) Dialling Instructions For trunk calls: 0 439 720000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 439 720000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 720000 ~ 729999 (Count: 10,000) Example: +81-439-720000 / 01081-439-720000 (0439-720000 / 0-439-720000) +81-439-720001 / 01081-439-720001 (0439-720001 / 0-439-720001) +81-439-720002 / 01081-439-720002 (0439-720002 / 0-439-720002) +81-439-720003 / 01081-439-720003 (0439-720003 / 0-439-720003) +81-439-720004 / 01081-439-720004 (0439-720004 / 0-439-720004) ...+81-439-xxxxxx / 01081-439-xxxxxx (0439-xxxxxx / 0-439-xxxxxx) ...+81-439-729995 / 01081-439-729995 (0439-729995 / 0-439-729995) +81-439-729996 / 01081-439-729996 (0439-729996 / 0-439-729996) +81-439-729997 / 01081-439-729997 (0439-729997 / 0-439-729997) +81-439-729998 / 01081-439-729998 (0439-729998 / 0-439-729998) +81-439-729999 / 01081-439-729999 (0439-729999 / 0-439-729999)