Area code 512
Area code 512 serves Austin and nearby parts of Texas, including Round Rock, Cedar Park and San Marcos. It is on Central Time, which observes daylight saving time. 737 is an overlay for the same area.
Area code 512 at a glance
| State | Texas (TX) |
| Main city | Austin |
| Time zone | Central Time |
| UTC offset | UTC−6 in winter, UTC−5 in summer |
| Daylight saving time | Yes |
| Overlay codes | 737 |
Cities in 512
- Austin
- Round Rock
- Cedar Park
- San Marcos
An area code shows where a number was first assigned. Mobile numbers keep their area code when people move, so the person you’re calling may be somewhere else.
When you can call a 512 number
Federal telemarketing rules under the TCPA allow sales calls between 8 AM and 9 PM in the called person’s local time. Here is that window for a 512 number, shown in your own time zone.
General information, not legal advice. Some states add rules for Sundays, holidays or the number of calls. See our calling hours guide.
| If you’re on | You can call 512 between |
|---|---|
| Eastern | 9:00 AM to 10:00 PM |
| Central | 8:00 AM to 9:00 PM |
| Mountain | 7:00 AM to 8:00 PM |
| Arizona | 6:00 AM to 7:00 PM |
| Pacific | 6:00 AM to 7:00 PM |
See the time in 512 without leaving your CRM
Parse is a free Chrome extension that shows the local time and weather beside every phone number on the page.
Other area codes in Texas
Questions about 512
What time zone is area code 512?
Area code 512 is on Central Time. It observes daylight saving time.
Where is area code 512?
Area code 512 is in Texas. Its main city is Austin, and it also covers Round Rock, Cedar Park and San Marcos.
What are the legal hours to call a 512 number?
Under the federal TCPA, sales calls are allowed from 8 AM to 9 PM in the called person’s local time. Personal and informational calls are not limited by these hours.
What area codes overlay 512?
737 covers the same area as 512, so numbers in the same town can have either code.