Area Code +1-210-(4551000...4551999) 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 : 4551000 Subscriber Number To : 4551999 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 : 1STEL INC. - 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-(4550000...4550999) next › : +1-210-(4552000...4552999) Dialling Instructions For trunk calls: 0 210 4551000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 210 4551000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4551000 ~ 4551999 (Count: 1,000) Example: +1-210-4551000 / 0111-210-4551000 (1210-4551000 / 1-210-4551000) +1-210-4551001 / 0111-210-4551001 (1210-4551001 / 1-210-4551001) +1-210-4551002 / 0111-210-4551002 (1210-4551002 / 1-210-4551002) +1-210-4551003 / 0111-210-4551003 (1210-4551003 / 1-210-4551003) +1-210-4551004 / 0111-210-4551004 (1210-4551004 / 1-210-4551004) ...+1-210-xxxxxxx / 0111-210-xxxxxxx (1210-xxxxxxx / 1-210-xxxxxxx) ...+1-210-4551995 / 0111-210-4551995 (1210-4551995 / 1-210-4551995) +1-210-4551996 / 0111-210-4551996 (1210-4551996 / 1-210-4551996) +1-210-4551997 / 0111-210-4551997 (1210-4551997 / 1-210-4551997) +1-210-4551998 / 0111-210-4551998 (1210-4551998 / 1-210-4551998) +1-210-4551999 / 0111-210-4551999 (1210-4551999 / 1-210-4551999)