Area Code +1-210-(3900000...3900999) 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 : 3900000 Subscriber Number To : 3900999 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-(3890000...3899999) next › : +1-210-(3901000...3901999) Dialling Instructions For trunk calls: 0 210 3900000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 210 3900000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3900000 ~ 3900999 (Count: 1,000) Example: +1-210-3900000 / 0111-210-3900000 (1210-3900000 / 1-210-3900000) +1-210-3900001 / 0111-210-3900001 (1210-3900001 / 1-210-3900001) +1-210-3900002 / 0111-210-3900002 (1210-3900002 / 1-210-3900002) +1-210-3900003 / 0111-210-3900003 (1210-3900003 / 1-210-3900003) +1-210-3900004 / 0111-210-3900004 (1210-3900004 / 1-210-3900004) ...+1-210-xxxxxxx / 0111-210-xxxxxxx (1210-xxxxxxx / 1-210-xxxxxxx) ...+1-210-3900995 / 0111-210-3900995 (1210-3900995 / 1-210-3900995) +1-210-3900996 / 0111-210-3900996 (1210-3900996 / 1-210-3900996) +1-210-3900997 / 0111-210-3900997 (1210-3900997 / 1-210-3900997) +1-210-3900998 / 0111-210-3900998 (1210-3900998 / 1-210-3900998) +1-210-3900999 / 0111-210-3900999 (1210-3900999 / 1-210-3900999)