Area Code +81-164-(420000...429999) located in Rumoi, Hokkaido (01), more detail is as below. Place International Dialing Code : 81 International Prefix : 010 National Prefix : 0 National Destination Code : 164 Subscriber Number From : 420000 Subscriber Number To : 429999 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 : 01 Region Name : Hokkaido City : Rumoi Timezone : Asia/Tokyo Coordinated Universal Time : +09:00 Daylight Saving Time : No National Significant Number Minimum Length : 9 Latitude : 43.9400 Longitude : 141.6400 ‹ previous : +81-164-(410000...419999) next › : +81-164-(430000...439999) Dialling Instructions For trunk calls: 0 164 420000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 010 81 164 420000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 420000 ~ 429999 (Count: 10,000) Example: +81-164-420000 / 01081-164-420000 (0164-420000 / 0-164-420000) +81-164-420001 / 01081-164-420001 (0164-420001 / 0-164-420001) +81-164-420002 / 01081-164-420002 (0164-420002 / 0-164-420002) +81-164-420003 / 01081-164-420003 (0164-420003 / 0-164-420003) +81-164-420004 / 01081-164-420004 (0164-420004 / 0-164-420004) ...+81-164-xxxxxx / 01081-164-xxxxxx (0164-xxxxxx / 0-164-xxxxxx) ...+81-164-429995 / 01081-164-429995 (0164-429995 / 0-164-429995) +81-164-429996 / 01081-164-429996 (0164-429996 / 0-164-429996) +81-164-429997 / 01081-164-429997 (0164-429997 / 0-164-429997) +81-164-429998 / 01081-164-429998 (0164-429998 / 0-164-429998) +81-164-429999 / 01081-164-429999 (0164-429999 / 0-164-429999)