Area Code +52-81-(10040000...10049999) located in Monterrey, Nuevo León (NLE), more detail is as below. Place International Dialing Code : 52 International Prefix : 00 National Prefix : 01 Cell Prefix : 1 National Destination Code : 81 Subscriber Number From : 10040000 Subscriber Number To : 10049999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : RADIOMOVIL DIPSA, S.A. DE C.V. Click here to buy Mexico Area Code Database Other Information Language Code : es (Spanish) Country Number : 484 (Mexico) Country Code : MX (Mexico) Region Code : NLE Region Name : Nuevo León City : Monterrey Timezone : America/Monterrey Coordinated Universal Time : -06:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 25.6700 Longitude : -100.3100 ‹ previous : +52-81-(10030000...10039999) next › : +52-81-(10050000...10059999) Dialling Instructions For trunk calls: 1 81 10040000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 52 81 10040000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 10040000 ~ 10049999 (Count: 10,000) Example: +52-81-10040000 / 0052-81-10040000 (0181-10040000 / 01-81-10040000) +52-81-10040001 / 0052-81-10040001 (0181-10040001 / 01-81-10040001) +52-81-10040002 / 0052-81-10040002 (0181-10040002 / 01-81-10040002) +52-81-10040003 / 0052-81-10040003 (0181-10040003 / 01-81-10040003) +52-81-10040004 / 0052-81-10040004 (0181-10040004 / 01-81-10040004) ...+52-81-xxxxxxxx / 0052-81-xxxxxxxx (0181-xxxxxxxx / 01-81-xxxxxxxx) ...+52-81-10049995 / 0052-81-10049995 (0181-10049995 / 01-81-10049995) +52-81-10049996 / 0052-81-10049996 (0181-10049996 / 01-81-10049996) +52-81-10049997 / 0052-81-10049997 (0181-10049997 / 01-81-10049997) +52-81-10049998 / 0052-81-10049998 (0181-10049998 / 01-81-10049998) +52-81-10049999 / 0052-81-10049999 (0181-10049999 / 01-81-10049999)