The Houston area is running out of telephone numbers and will soon add a fifth area code to accommodate its growing population. According to the Public Utility Commission of Texas, Houston's four ...

The Oklahoma Corporation Commission on Wednesday approved a second telephone area code for the area using the 405 prefix in central Oklahoma. Called an “overlay,” the plan will add a yet-to-be ...

Colorado will soon have a new area code thanks to the rising demand for new phone numbers. Officials with the state's Public Utilities Commission said they've created the 748 area code to also cover ...

Wisconsin is getting a new telephone area code as 608 runs out of assignable prefixes, the three digits in a phone number following the area code. Area code 353 will be used for new telephone ...