Area Code +31-45-(2031000...2031999) located in Heerlen, Limburg (LI), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 45 Subscriber Number From : 2031000 Subscriber Number To : 2031999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : VoIPGRID 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 : LI Region Name : Limburg City : Heerlen Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 50.8800 Longitude : 5.9800 ‹ previous : +31-45-(2030000...2030999) next › : +31-45-(2040000...2049999) Dialling Instructions For trunk calls: 0 45 2031000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 45 2031000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2031000 ~ 2031999 (Count: 1,000) Example: +31-45-2031000 / 0031-45-2031000 (045-2031000 / 0-45-2031000) +31-45-2031001 / 0031-45-2031001 (045-2031001 / 0-45-2031001) +31-45-2031002 / 0031-45-2031002 (045-2031002 / 0-45-2031002) +31-45-2031003 / 0031-45-2031003 (045-2031003 / 0-45-2031003) +31-45-2031004 / 0031-45-2031004 (045-2031004 / 0-45-2031004) ...+31-45-xxxxxxx / 0031-45-xxxxxxx (045-xxxxxxx / 0-45-xxxxxxx) ...+31-45-2031995 / 0031-45-2031995 (045-2031995 / 0-45-2031995) +31-45-2031996 / 0031-45-2031996 (045-2031996 / 0-45-2031996) +31-45-2031997 / 0031-45-2031997 (045-2031997 / 0-45-2031997) +31-45-2031998 / 0031-45-2031998 (045-2031998 / 0-45-2031998) +31-45-2031999 / 0031-45-2031999 (045-2031999 / 0-45-2031999)