Area Code +1-210-(3750000...3750999) located in San Antonio, Texas (TX), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 210 Subscriber Number From : 3750000 Subscriber Number To : 3750999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : SOUTHWESTERN BELL Click here to buy United States Area Code Database Other Information Language Code : en (English) Country Number : 840 (United States) Country Code : US (United States) Region Code : TX Region Name : Texas City : San Antonio Timezone : America/Chicago Coordinated Universal Time : -06:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 29.4300 Longitude : -98.4800 ‹ previous : +1-210-(3749000...3749999) next › : +1-210-(3751000...3751999) Dialling Instructions For trunk calls: 0 210 3750000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 210 3750000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3750000 ~ 3750999 (Count: 1,000) Example: +1-210-3750000 / 0111-210-3750000 (1210-3750000 / 1-210-3750000) +1-210-3750001 / 0111-210-3750001 (1210-3750001 / 1-210-3750001) +1-210-3750002 / 0111-210-3750002 (1210-3750002 / 1-210-3750002) +1-210-3750003 / 0111-210-3750003 (1210-3750003 / 1-210-3750003) +1-210-3750004 / 0111-210-3750004 (1210-3750004 / 1-210-3750004) ...+1-210-xxxxxxx / 0111-210-xxxxxxx (1210-xxxxxxx / 1-210-xxxxxxx) ...+1-210-3750995 / 0111-210-3750995 (1210-3750995 / 1-210-3750995) +1-210-3750996 / 0111-210-3750996 (1210-3750996 / 1-210-3750996) +1-210-3750997 / 0111-210-3750997 (1210-3750997 / 1-210-3750997) +1-210-3750998 / 0111-210-3750998 (1210-3750998 / 1-210-3750998) +1-210-3750999 / 0111-210-3750999 (1210-3750999 / 1-210-3750999)