Area Code +81-4-(20030000...20039999) located in Tokorozawa, Saitama (11), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 4 Subscriber Number From : 20030000 Subscriber Number To : 20039999 National Destination Code Length : 1 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Softbank Mobile Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) Region Code : 11 Region Name : Saitama City : Tokorozawa Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 35.8000 Longitude : 139.4700 ‹ previous : +81-4-(20010000...20019999) next › : +81-4-(20040000...20049999) Dialling Instructions For trunk calls: 0 4 20030000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 4 20030000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 20030000 ~ 20039999 (Count: 10,000) Example: +81-4-20030000 / 01081-4-20030000 (04-20030000 / 0-4-20030000) +81-4-20030001 / 01081-4-20030001 (04-20030001 / 0-4-20030001) +81-4-20030002 / 01081-4-20030002 (04-20030002 / 0-4-20030002) +81-4-20030003 / 01081-4-20030003 (04-20030003 / 0-4-20030003) +81-4-20030004 / 01081-4-20030004 (04-20030004 / 0-4-20030004) ...+81-4-xxxxxxxx / 01081-4-xxxxxxxx (04-xxxxxxxx / 0-4-xxxxxxxx) ...+81-4-20039995 / 01081-4-20039995 (04-20039995 / 0-4-20039995) +81-4-20039996 / 01081-4-20039996 (04-20039996 / 0-4-20039996) +81-4-20039997 / 01081-4-20039997 (04-20039997 / 0-4-20039997) +81-4-20039998 / 01081-4-20039998 (04-20039998 / 0-4-20039998) +81-4-20039999 / 01081-4-20039999 (04-20039999 / 0-4-20039999)