Area Code +1-210-(3901000...3901999) 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 : 3901000 Subscriber Number To : 3901999 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 : LEVEL 3 COMM - TX 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-(3900000...3900999) next › : +1-210-(3902000...3902999) Dialling Instructions For trunk calls: 0 210 3901000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 210 3901000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3901000 ~ 3901999 (Count: 1,000) Example: +1-210-3901000 / 0111-210-3901000 (1210-3901000 / 1-210-3901000) +1-210-3901001 / 0111-210-3901001 (1210-3901001 / 1-210-3901001) +1-210-3901002 / 0111-210-3901002 (1210-3901002 / 1-210-3901002) +1-210-3901003 / 0111-210-3901003 (1210-3901003 / 1-210-3901003) +1-210-3901004 / 0111-210-3901004 (1210-3901004 / 1-210-3901004) ...+1-210-xxxxxxx / 0111-210-xxxxxxx (1210-xxxxxxx / 1-210-xxxxxxx) ...+1-210-3901995 / 0111-210-3901995 (1210-3901995 / 1-210-3901995) +1-210-3901996 / 0111-210-3901996 (1210-3901996 / 1-210-3901996) +1-210-3901997 / 0111-210-3901997 (1210-3901997 / 1-210-3901997) +1-210-3901998 / 0111-210-3901998 (1210-3901998 / 1-210-3901998) +1-210-3901999 / 0111-210-3901999 (1210-3901999 / 1-210-3901999)