Area Code +81-438-(420000...429999) located in Kisarazu, Chiba (12), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 438 Subscriber Number From : 420000 Subscriber Number To : 429999 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 : +81-438-(410000...419999) next › : +81-438-(520000...529999) Dialling Instructions For trunk calls: 0 438 420000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 438 420000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 420000 ~ 429999 (Count: 10,000) Example: +81-438-420000 / 01081-438-420000 (0438-420000 / 0-438-420000) +81-438-420001 / 01081-438-420001 (0438-420001 / 0-438-420001) +81-438-420002 / 01081-438-420002 (0438-420002 / 0-438-420002) +81-438-420003 / 01081-438-420003 (0438-420003 / 0-438-420003) +81-438-420004 / 01081-438-420004 (0438-420004 / 0-438-420004) ...+81-438-xxxxxx / 01081-438-xxxxxx (0438-xxxxxx / 0-438-xxxxxx) ...+81-438-429995 / 01081-438-429995 (0438-429995 / 0-438-429995) +81-438-429996 / 01081-438-429996 (0438-429996 / 0-438-429996) +81-438-429997 / 01081-438-429997 (0438-429997 / 0-438-429997) +81-438-429998 / 01081-438-429998 (0438-429998 / 0-438-429998) +81-438-429999 / 01081-438-429999 (0438-429999 / 0-438-429999)