Area Code +81-3-(31100000...31109999) located in Tokyo, Tokyo (13), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 3 Subscriber Number From : 31100000 Subscriber Number To : 31109999 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 : Tokyo Tele Message Click here to buy Japan Area Code Database Other Information Language Code : ja (Japanese) Country Number : 392 (Japan) Country Code : JP (Japan) Region Code : 13 Region Name : Tokyo City : Tokyo Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 35.6900 Longitude : 139.6900 ‹ previous : +81-3-(31090000...31099999) next › : +81-3-(31110000...31119999) Dialling Instructions For trunk calls: 0 3 31100000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 3 31100000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 31100000 ~ 31109999 (Count: 10,000) Example: +81-3-31100000 / 01081-3-31100000 (03-31100000 / 0-3-31100000) +81-3-31100001 / 01081-3-31100001 (03-31100001 / 0-3-31100001) +81-3-31100002 / 01081-3-31100002 (03-31100002 / 0-3-31100002) +81-3-31100003 / 01081-3-31100003 (03-31100003 / 0-3-31100003) +81-3-31100004 / 01081-3-31100004 (03-31100004 / 0-3-31100004) ...+81-3-xxxxxxxx / 01081-3-xxxxxxxx (03-xxxxxxxx / 0-3-xxxxxxxx) ...+81-3-31109995 / 01081-3-31109995 (03-31109995 / 0-3-31109995) +81-3-31109996 / 01081-3-31109996 (03-31109996 / 0-3-31109996) +81-3-31109997 / 01081-3-31109997 (03-31109997 / 0-3-31109997) +81-3-31109998 / 01081-3-31109998 (03-31109998 / 0-3-31109998) +81-3-31109999 / 01081-3-31109999 (03-31109999 / 0-3-31109999)