Area Code +31-343-(420000...429999) located in Doorn, Utrecht (UT), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 343 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 : KPN B.V. Click here to buy Netherlands Area Code Database Other Information Language Code : nl (Dutch) Country Number : 528 (Netherlands) Country Code : NL (Netherlands) Region Code : UT Region Name : Utrecht City : Doorn Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.0300 Longitude : 5.3500 ‹ previous : +31-343-(410000...419999) next › : +31-343-(430000...439999) Dialling Instructions For trunk calls: 0 343 420000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 343 420000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 420000 ~ 429999 (Count: 10,000) Example: +31-343-420000 / 0031-343-420000 (0343-420000 / 0-343-420000) +31-343-420001 / 0031-343-420001 (0343-420001 / 0-343-420001) +31-343-420002 / 0031-343-420002 (0343-420002 / 0-343-420002) +31-343-420003 / 0031-343-420003 (0343-420003 / 0-343-420003) +31-343-420004 / 0031-343-420004 (0343-420004 / 0-343-420004) ...+31-343-xxxxxx / 0031-343-xxxxxx (0343-xxxxxx / 0-343-xxxxxx) ...+31-343-429995 / 0031-343-429995 (0343-429995 / 0-343-429995) +31-343-429996 / 0031-343-429996 (0343-429996 / 0-343-429996) +31-343-429997 / 0031-343-429997 (0343-429997 / 0-343-429997) +31-343-429998 / 0031-343-429998 (0343-429998 / 0-343-429998) +31-343-429999 / 0031-343-429999 (0343-429999 / 0-343-429999)