512 Area Code: Austin, Texas
Area code 512 serves Austin, Georgetown and San Marcos, Texas in the Central time zone, in service since 1947. Consumers have filed 8,309 unwanted-call complaints against 6,522 different 512 numbers, 642 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 512 at a glance
- State
- Texas
- Main cities
- Austin, Georgetown, San Marcos, Bastrop + 27 more
- Counties
- Travis County, Williamson County, Hays County, Bastrop County + 5 more
- Local time
- —Central
- In service since
- 1947
- Overlay code
- 737 (2013)
- Local dialing
- 10 digits (area code + number)
- Exchanges
- 36 rate centers, 785 prefixes
Sources: NANPA area code and central office code records (refreshed weekly); cities and counties matched from US Census Bureau and USGS place names.
Most-reported 512 numbers
Ranked by FTC Do Not Call complaints this month, then all-time FTC and FCC complaints. Only numbers with enough complaints for a full report page are listed. Click one for what it was reported for and where.
- (512) 768-9859Impostor (government, business, family)9 this month2026-10-16
- (512) 900-3239Dropped call / no message9 this month2026-10-10
- (512) 229-0770Impostor (government, business, family)6 this month2026-10-13
- (512) 543-1782Medical & prescriptions4 this month2026-10-20
- (512) 900-4370Dropped call / no message3 this month2026-09-30
- (512) 503-54840 reports
- (512) 792-75250 reports
What calls from 512 numbers are about
2,479 FTC Do Not Call complaints about 512 numbers since Jul 24. The most common named subject is impostor calls (people pretending to be a government agency, a business or family), at 16% of complaints (52% of those were recorded messages). Overall, 63% of callers who answered said the call was a robocall.
FTC complaint subjects
- Other / unspecified86935%
- Impostor (government, business, family)40816%
- Dropped call / no message39516%
- Medical & prescriptions37115%
- No subject given2259%
- Debt reduction733%
- Home improvement & cleaning412%
FCC complaints by call type, last 2 years
- Live Voice20345%
- Prerecorded Voice13229%
- Text Message11626%
26% of recent FCC complaints about 512 numbers are about text messages, not calls.
When 512 spam calls come in
31% of complaints that give a call time describe calls between 10am and 1pm. 97% came Monday to Friday, most on Thursdays, the pattern of call-center robocall campaigns that run on business hours. Times are as consumers reported them to the FTC.
By hour of the day
By day of the week
Is it getting worse?
630 FTC complaints about 512 numbers in the last four weeks, down 34% on the four weeks before. FCC complaints about 512 numbers peaked in 2016 (957); the FTC's daily Do Not Call data has carried most of the volume since mid-2026.
FTC complaints per week
FCC complaints per year
Years shown as '15 to '26; the current year is partial.
Who gets these calls
76% of the FTC complaints about 512 numbers came from people whose own phone number also starts with 512, and 82% from Texas. Calls that look local to the person receiving them are the signature of neighbor spoofing: robocallers display a number from your own area code because you're more likely to answer.
Where complainants live
- Texas2,04482%
- Ohio492%
- North Carolina442%
- Florida402%
- California341%
What people with 512 numbers report
People whose own number starts with 512 filed 4,201 FTC complaints since Jul 24. 45% were about calls showing another 512 number. The most common named subject was debt-relief pitches.
Area codes on the calls they reported
- 512 (same code)1,89545%
- 833 (toll-free)1423%
- 7371333%
- 877 (toll-free)1002%
- 888 (toll-free)802%
Busiest 512 prefixes this month
FTC complaints in the last 30 days, grouped by the first six digits. When one prefix collects complaints about many different numbers, a campaign is usually cycling through that block. The carrier is who NANPA assigned the prefix to, not who made the calls.
| Prefix | Complaints | Numbers | Carrier | Exchange |
|---|---|---|---|---|
| (512) 900-xxxx | 17 | 4 | Level 3 (Lumen) | Austin |
| (512) 768-xxxx | 13 | 5 | Onvoy (Sinch) | Adamsville |
| (512) 991-xxxx | 10 | 6 | Onvoy (Sinch) | Lometa |
| (512) 325-xxxx | 9 | 9 | Onvoy (Sinch) | Leander |
| (512) 215-xxxx | 9 | 9 | Twc Ip Enabled Services, LLC | Austin |
Carriers operating in 512
NANPA has assigned 785 512 prefixes (NPA-NXX central-office codes) across 36 rate centers: 32% to wireless carriers, 67% to landline and VoIP operators; 67% are pooled blocks shared by several carriers. The newest assignment was 2024-11-01. The carrier holding a prefix is who the number was issued through. It says nothing about who is calling, since caller ID is routinely spoofed.
| Carrier | Type | Prefixes | Rate centers | Newest assignment |
|---|---|---|---|---|
| Southwestern Bell (AT&T) | Incumbent landline (ILEC) | 273(35%) | 11 | 2012-04-05 |
| AT&T Mobility (New Cingular Wireless PCS) | Wireless | 98(12%) | 8 | 2023-08-15 |
| T-Mobile USA | Wireless | 70(9%) | 8 | 2014-10-20 |
| Verizon Wireless (Cellco Partnership) | Wireless | 49(6%) | 7 | 2015-03-27 |
| Level 3 (Lumen) | Competitive / VoIP (CLEC) | 45(6%) | 2 | 2015-03-10 |
| Frontier Communications | Incumbent landline (ILEC) | 37(5%) | 19 | — |
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 26(3%) | 9 | 2023-08-23 |
| Level 3 (Lumen) | Competitive / VoIP (CLEC) | 21(3%) | 10 | 2022-07-28 |
| Bandwidth.com | Competitive / VoIP (CLEC) | 17(2%) | 5 | 2019-02-14 |
| Spok, INC. | Wireless | 16(2%) | 2 | 2001-03-26 |
| Teleport Communications America, LLC | Competitive / VoIP (CLEC) | 16(2%) | 6 | 2018-11-26 |
| Grande Communications Networks, INC. | Competitive / VoIP (CLEC) | 14(2%) | 9 | 2007-05-02 |
Largest rate centers (exchanges) by prefixes: Austin (585), Georgetown (29), San Marcos (26), Bastrop (19), Leander (12), Lockhart (11), Burnet (8), Taylor (7), Kyle (6), Lampasas (6). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 512 numbers
Before you call back
- Impostor (government, business, family) is the top named complaint here. Hang up and call the agency, bank or relative back on a number you already know. Government agencies don't demand payment by gift card, wire transfer or crypto. Read about Social Security impostor calls and fake bank fraud calls.
- Look up the full number above. A missed call from 512 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- If it looks like a neighbor's number, it may be spoofed. See calls from your own area code.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in Texas
- Unwanted sales calls and robocalls: donotcall.gov (FTC). Scams and fraud: ReportFraud.ftc.gov.
- Spoofing, texts and call-blocking problems: FCC consumer complaints.
- State complaints: Texas Attorney General.
- Texas is one of the states that maintains its own Do Not Call registry alongside the federal National Do Not Call Registry, so telemarketers calling Texas numbers are expected to check both lists. Registering on the federal list at donotcall.gov is free and never expires; the state list is administered separately and may have its own registration process and renewal period.
Your FTC and FCC reports are published (without your name or number) in the datasets this page is built from. How to report unwanted calls.
Area code 512: questions answered from the data
Where is area code 512?
Area code 512 serves Austin, Georgetown and San Marcos, Texas, covering Travis County, Williamson County and Hays County and 6 more counties. It has been in service since 1947.
What time zone is area code 512 in?
Area code 512 is in the Central time zone (UTC−6, or UTC−5 during daylight saving time). The current local time is shown at the top of this page.
Which area codes overlay 512?
737 (in service 2013) serves the same area as 512. New numbers there can be issued with any of these codes, and local calls need all 10 digits. A spoofed call can display any of them.
What are calls from 512 numbers usually about?
Since Jul 24, consumers filed 2,479 FTC Do Not Call complaints about 512 numbers. The most common named subject was impostor calls (people pretending to be a government agency, a business or family): 16% of complaints, 52% of them recorded messages. Across all subjects, 63% of callers who answered the question said the call was a robocall.
When do 512 spam calls happen?
31% of the complaints that give a call time describe calls between 10am and 1pm, and 97% came on weekdays, most often on Thursday. Times are as consumers reported them.
Are calls from 512 numbers really local?
Not necessarily. 76% of the FTC complaints about 512 numbers came from people whose own phone number also starts with 512, and 82% from Texas. Calls that look local to the person receiving them are the signature of neighbor spoofing: robocallers display a number from your own area code because you're more likely to answer.
Are 512 robocalls increasing?
In the four weeks to Oct 20, consumers filed 630 FTC complaints about 512 numbers, 34% fewer than the four weeks before.
How do I report a 512 scam call in Texas?
Report unwanted sales calls and robocalls to the FTC at donotcall.gov, and scams to ReportFraud.ftc.gov. The FCC takes complaints at consumercomplaints.fcc.gov. In Texas, the Texas Attorney General also handles consumer complaints about scam calls. Reports feed the public data this page is built from.
Overlay and nearby area codes
Sources: FTC Do Not Call complaints (unverified consumer reports), published every weekday and available here from Jul 24; FCC Consumer Complaint Data, public record, imported nightly; NANPA numbering records. A number appearing here means consumers reported calls that displayed it. Caller ID can be spoofed.