Area Code +52-444-(1039000...1039999) located in San Luis Potosí, San Luis (SLP), more detail is as below. Place International Dialing Code : 52 International Prefix : 00 National Prefix : 01 Cell Prefix : 1 National Destination Code : 444 Subscriber Number From : 1039000 Subscriber Number To : 1039999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : OPERADORA UNEFON, 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 : SLP Region Name : San Luis City : San Luis Potosí Timezone : America/Mexico_City Coordinated Universal Time : -06:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 22.1500 Longitude : -100.9800 ‹ previous : +52-444-(1030000...1038999) next › : +52-444-(1040000...1043999) Dialling Instructions For trunk calls: 1 444 1039000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 52 444 1039000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 1039000 ~ 1039999 (Count: 1,000) Example: +52-444-1039000 / 0052-444-1039000 (01444-1039000 / 01-444-1039000) +52-444-1039001 / 0052-444-1039001 (01444-1039001 / 01-444-1039001) +52-444-1039002 / 0052-444-1039002 (01444-1039002 / 01-444-1039002) +52-444-1039003 / 0052-444-1039003 (01444-1039003 / 01-444-1039003) +52-444-1039004 / 0052-444-1039004 (01444-1039004 / 01-444-1039004) ...+52-444-xxxxxxx / 0052-444-xxxxxxx (01444-xxxxxxx / 01-444-xxxxxxx) ...+52-444-1039995 / 0052-444-1039995 (01444-1039995 / 01-444-1039995) +52-444-1039996 / 0052-444-1039996 (01444-1039996 / 01-444-1039996) +52-444-1039997 / 0052-444-1039997 (01444-1039997 / 01-444-1039997) +52-444-1039998 / 0052-444-1039998 (01444-1039998 / 01-444-1039998) +52-444-1039999 / 0052-444-1039999 (01444-1039999 / 01-444-1039999)