Area Code +81-237-(600000...609999) 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 : 600000 Subscriber Number To : 609999 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 Communications 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-(590000...599999) next › : +81-237-(620000...629999) Dialling Instructions For trunk calls: 0 237 600000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 237 600000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 600000 ~ 609999 (Count: 10,000) Example: +81-237-600000 / 01081-237-600000 (0237-600000 / 0-237-600000) +81-237-600001 / 01081-237-600001 (0237-600001 / 0-237-600001) +81-237-600002 / 01081-237-600002 (0237-600002 / 0-237-600002) +81-237-600003 / 01081-237-600003 (0237-600003 / 0-237-600003) +81-237-600004 / 01081-237-600004 (0237-600004 / 0-237-600004) ...+81-237-xxxxxx / 01081-237-xxxxxx (0237-xxxxxx / 0-237-xxxxxx) ...+81-237-609995 / 01081-237-609995 (0237-609995 / 0-237-609995) +81-237-609996 / 01081-237-609996 (0237-609996 / 0-237-609996) +81-237-609997 / 01081-237-609997 (0237-609997 / 0-237-609997) +81-237-609998 / 01081-237-609998 (0237-609998 / 0-237-609998) +81-237-609999 / 01081-237-609999 (0237-609999 / 0-237-609999)