Area Code +352-23-(540000...549999) 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 : 540000 Subscriber Number To : 549999 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-(530000...539999) next › : +352-23-(550000...559999) Dialling Instructions For trunk calls: - 23 540000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 352 23 540000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 540000 ~ 549999 (Count: 10,000) Example: +352-23-540000 / 00352-23-540000 (23-540000 / -23-540000) +352-23-540001 / 00352-23-540001 (23-540001 / -23-540001) +352-23-540002 / 00352-23-540002 (23-540002 / -23-540002) +352-23-540003 / 00352-23-540003 (23-540003 / -23-540003) +352-23-540004 / 00352-23-540004 (23-540004 / -23-540004) ...+352-23-xxxxxx / 00352-23-xxxxxx (23-xxxxxx / -23-xxxxxx) ...+352-23-549995 / 00352-23-549995 (23-549995 / -23-549995) +352-23-549996 / 00352-23-549996 (23-549996 / -23-549996) +352-23-549997 / 00352-23-549997 (23-549997 / -23-549997) +352-23-549998 / 00352-23-549998 (23-549998 / -23-549998) +352-23-549999 / 00352-23-549999 (23-549999 / -23-549999)