Area Codes
| 737 | Texas This Area code is scheduled to provide numbering relief to area code 512 but no date has been assigned for this to go into effect. | More information at: Area Code 737 Phone Number Blocks
| 737 | Texas This Area code is scheduled to provide numbering relief to area code 512 but no date has been assigned for this to go into effect. | More information at: Area Code 737 Phone Number Blocks