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Area code 737

Area code 737 serves Texas, including Austin, Georgetown and Bastrop (Central time). It has been in service since July 1, 2013 and shares its area with 512.

Numbers starting with 737 drew 1,089 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 639 complaints to the FCC since November 2023. The number on your screen can be faked, so a 737 number proves nothing about where a call came from.

Location
TexasAustin-Round Rock-San Marcos, TX Metropolitan Statistical Area
Time zone
Central
In service since
July 1, 2013Created from 512
Overlay
Same area as 512
Local calls
Dial 10 digitsArea code needed, even next door
Exchanges in use
333 of 792held by 45 carriers
Projected to run out
2Q 2045NANPA forecast 2026.2

Complaints about 737 numbers

Reports where the number on the consumer's caller ID (or, for the FCC, the number the caller asked them to call back) starts with 737. These are counts of what people reported; the agencies do not verify them.

FTC reports, Aug 14, 2026 to Nov 11, 2026

1,089

FCC complaints since November 2023

639

Different 737 numbers reported

1,526

FCC complaints naming a 737 number, by month

November 2023 to October 2026. Source: FCC Consumer Complaints Data.

Show as a table
MonthComplaints
November 202316
December 202313
January 20249
February 202414
March 202413
April 202418
May 202422
June 202413
July 202412
August 202414
September 20247
October 202416
November 202414
December 202411
January 202519
February 202510
March 202513
April 20257
May 202513
June 202516
July 202512
August 202516
September 202514
October 20252
November 20259
December 202517
January 202612
February 202618
March 202618
April 202610
May 202623
June 202619
July 202612
August 202615
September 202646
October 202699

What people said 737 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 726 of 1,089 reports were robocalls.

Show as a table
SubjectReports
Other477
Reducing your debt (credit cards, mortgage, student loans)268
Calls pretending to be government, businesses, or family and friends107
Dropped call or no message87
Medical and prescriptions26
Home improvement and cleaning18

Most reported 737 numbers

Numbers with at least five reports from three or more places in the last twelve months. Many of them are likely spoofed.

Places served by 737

NANPA lists 35 rate centers for 737. A rate center is the town or district a block of numbers is tied to for billing; sorted here by how many exchanges each holds.
  • Austin155
  • Georgetown21
  • Bastrop19
  • San Marcos13
  • Kyle10
  • Leander10
  • Elgin9
  • Taylor8
  • Buda7
  • Lampasas6
  • Lockhart6
  • Burnet5
  • Dripping Springs5
  • Rockdale5
  • Wimberley5
  • Bertram4
  • Hutto4
  • Smithville4
  • Granger3
  • Jarrell3
  • Liberty Hill3
  • Martindale3
  • San Gabriel3
  • Adamsville2
Show all 35 rate centers

Briggs, Coupland, Dale/Lytton Springs, Fentress, Kempner, Lometa, Mcdade, Milano, Thorndale Thrall, Buchanan Dam, Paige.

Phone companies holding 737 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 100% of these exchanges are pooled: their numbers are handed out in blocks of 1,000 to other carriers, so the holder below is not always the company serving a given number.

Exchanges held, top 8 of 45 carriers

NANPA central office code assignments, file of November 11, 2026.

Show as a table
Carrier (legal name)Exchanges
Onvoy, LLC - TX82
T-Mobile USA, Inc.33
New Cingular Wireless PCS, LLC - IL29
Cellco Partnership dba Verizon Wireless - TX28
Fractel, LLC26
Bandwidth.com CLEC, LLC - TX21
Teleport Communications America, LLC - TX14
Ton80 Communications, LLC9

When today's 737 exchanges were assigned

Exchanges still assigned, by year of assignment. Exchanges returned since are not counted.

Show as a table
YearExchanges
20139
20142
201522
201618
201712
201825
201923
202043
202143
202227
202320
202427
202524
202616

Check a 737 number

A check shows the carrier and rate center of the number's exchange and every FTC and FCC report about that exact number. Why the number on screen can be fake.

Other area codes in Texas

NANPA area code database and central office code file of November 11, 2026; FCC complaints November 1, 2023 to November 11, 2026; FTC reports August 14, 2026 to November 11, 2026. How the data is used.

Official sources (7)Show