Area Code +352-23-(660000...669999) located in Mondorf-les-Bains/Bascharage/Noerdange/Remich, Luxembourg, more detail is as below. Place International Dialing Code : 352 International Prefix : 00 National Destination Code : 23 Subscriber Number From : 660000 Subscriber Number To : 669999 National Destination Code Length : 2 Uses National Destination Code : No National Significant Number Length : 8 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Entreprise des Postes et Télécommunications Click here to buy Luxembourg Area Code Database Other Information Language Code : fr (French) Country Number : 442 (Luxembourg) Country Code : LU (Luxembourg) Region Name : Luxembourg City : Mondorf-les-Bains/Bascharage/Noerdange/Remich Timezone : Europe/Luxembourg Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 8 Latitude : 49.6000 Longitude : 6.1500 ‹ previous : +352-23-(650000...659999) next › : +352-23-(670000...679999) Dialling Instructions For trunk calls: - 23 660000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 352 23 660000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 660000 ~ 669999 (Count: 10,000) Example: +352-23-660000 / 00352-23-660000 (23-660000 / -23-660000) +352-23-660001 / 00352-23-660001 (23-660001 / -23-660001) +352-23-660002 / 00352-23-660002 (23-660002 / -23-660002) +352-23-660003 / 00352-23-660003 (23-660003 / -23-660003) +352-23-660004 / 00352-23-660004 (23-660004 / -23-660004) ...+352-23-xxxxxx / 00352-23-xxxxxx (23-xxxxxx / -23-xxxxxx) ...+352-23-669995 / 00352-23-669995 (23-669995 / -23-669995) +352-23-669996 / 00352-23-669996 (23-669996 / -23-669996) +352-23-669997 / 00352-23-669997 (23-669997 / -23-669997) +352-23-669998 / 00352-23-669998 (23-669998 / -23-669998) +352-23-669999 / 00352-23-669999 (23-669999 / -23-669999)