Area Code +81-470-(680000...689999) located in Isumi (Ohara), Chiba (12), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 470 Subscriber Number From : 680000 Subscriber Number To : 689999 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 : Isumi (Ohara) Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 35.2500 Longitude : 140.3900 ‹ previous : +81-470-(670000...679999) next › : +81-470-(700000...709999) Dialling Instructions For trunk calls: 0 470 680000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 470 680000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 680000 ~ 689999 (Count: 10,000) Example: +81-470-680000 / 01081-470-680000 (0470-680000 / 0-470-680000) +81-470-680001 / 01081-470-680001 (0470-680001 / 0-470-680001) +81-470-680002 / 01081-470-680002 (0470-680002 / 0-470-680002) +81-470-680003 / 01081-470-680003 (0470-680003 / 0-470-680003) +81-470-680004 / 01081-470-680004 (0470-680004 / 0-470-680004) ...+81-470-xxxxxx / 01081-470-xxxxxx (0470-xxxxxx / 0-470-xxxxxx) ...+81-470-689995 / 01081-470-689995 (0470-689995 / 0-470-689995) +81-470-689996 / 01081-470-689996 (0470-689996 / 0-470-689996) +81-470-689997 / 01081-470-689997 (0470-689997 / 0-470-689997) +81-470-689998 / 01081-470-689998 (0470-689998 / 0-470-689998) +81-470-689999 / 01081-470-689999 (0470-689999 / 0-470-689999)