Area Code +81-237-(670000...679999) located in Sagae, Yamagata (06), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 237 Subscriber Number From : 670000 Subscriber Number To : 679999 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 : 06 Region Name : Yamagata City : Sagae Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 38.3800 Longitude : 140.2800 ‹ previous : +81-237-(640000...649999) next › : +81-237-(680000...689999) Dialling Instructions For trunk calls: 0 237 670000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 237 670000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 670000 ~ 679999 (Count: 10,000) Example: +81-237-670000 / 01081-237-670000 (0237-670000 / 0-237-670000) +81-237-670001 / 01081-237-670001 (0237-670001 / 0-237-670001) +81-237-670002 / 01081-237-670002 (0237-670002 / 0-237-670002) +81-237-670003 / 01081-237-670003 (0237-670003 / 0-237-670003) +81-237-670004 / 01081-237-670004 (0237-670004 / 0-237-670004) ...+81-237-xxxxxx / 01081-237-xxxxxx (0237-xxxxxx / 0-237-xxxxxx) ...+81-237-679995 / 01081-237-679995 (0237-679995 / 0-237-679995) +81-237-679996 / 01081-237-679996 (0237-679996 / 0-237-679996) +81-237-679997 / 01081-237-679997 (0237-679997 / 0-237-679997) +81-237-679998 / 01081-237-679998 (0237-679998 / 0-237-679998) +81-237-679999 / 01081-237-679999 (0237-679999 / 0-237-679999)