Area Code +352-23-(770000...779999) 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 : 770000 Subscriber Number To : 779999 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-(760000...769999) next › : +352-23-(780000...789999) Dialling Instructions For trunk calls: - 23 770000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 352 23 770000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 770000 ~ 779999 (Count: 10,000) Example: +352-23-770000 / 00352-23-770000 (23-770000 / -23-770000) +352-23-770001 / 00352-23-770001 (23-770001 / -23-770001) +352-23-770002 / 00352-23-770002 (23-770002 / -23-770002) +352-23-770003 / 00352-23-770003 (23-770003 / -23-770003) +352-23-770004 / 00352-23-770004 (23-770004 / -23-770004) ...+352-23-xxxxxx / 00352-23-xxxxxx (23-xxxxxx / -23-xxxxxx) ...+352-23-779995 / 00352-23-779995 (23-779995 / -23-779995) +352-23-779996 / 00352-23-779996 (23-779996 / -23-779996) +352-23-779997 / 00352-23-779997 (23-779997 / -23-779997) +352-23-779998 / 00352-23-779998 (23-779998 / -23-779998) +352-23-779999 / 00352-23-779999 (23-779999 / -23-779999)