🇺🇸 512 area code
Area code 512 covers Austin, Georgetown, Round Rock and San Marcos and the surrounding area in Texas. It shares that territory with 737, so the same neighbourhood can have numbers in any of them. Enter a 512 number below for a free check before you call back.
- Location: Austin, Texas
- Time zone: Central (UTC−6)
- In service since 1947
Look up a number
Validity, carrier, line type, and region on the first pass.
Area code 512 at a glance
Cities in area code 512
- Austin
- Georgetown
- Round Rock
- San Marcos
- Bastrop
- Buda
- Burnet
- Dripping Springs
- Elgin
- Hutto
Is a 512 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so a 512 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 512 number to people in Texas because a local-looking call is more likely to be answered. If a 512 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 512
512 is one of the original North American area codes, created in 1947 when AT&T and the Bell System first divided the continent into numbering plan areas.
It is part of the 512/737 overlay: the codes cover the same area, and a new line there can be given a number in any of them. Two neighbours — or two phones in one household — can have different area codes. That is also why local calls need the full ten digits.
As the region grew, 210, 361 and 737 were carved out of or added to 512.
FAQ
Area code 512 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 512?
Area code 512 is in Texas, United States. It covers Austin, Georgetown, Round Rock, San Marcos, Bastrop and Buda.
What time zone is area code 512?
512 is in the Central (UTC−6) time zone, and observes daylight saving time.
What area codes overlay 512?
737 serves the same area as 512. Numbers in all of them are local to one another.
When did area code 512 start?
512 entered service in 1947.
How do I find out who called me from 512?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 512?
If you live in or near Texas, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 512 callers who will not leave a message are best looked up before you call back.
Got a call from 512?
Run the free check first — validity, carrier, line type and region — and unlock the full report only if you need it.