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Area code 738

Area code 738 serves California, including Los Angeles and Montebello (Pacific time). It has been in service since November 1, 2024 and shares its area with 213 and 323.

Numbers starting with 738 drew 66 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 5 complaints to the FCC since November 2023. The number on your screen can be faked, so a 738 number proves nothing about where a call came from.

Location
CaliforniaLos Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area
Time zone
Pacific
In service since
November 1, 2024Created from 323
Overlay
Same area as 213, 323
Local calls
Dial 1 + 10 digits
Exchanges in use
30 of 792held by 8 carriers
Projected to run out
1Q 2046NANPA forecast 2026.2

Complaints about 738 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 738. These are counts of what people reported; the agencies do not verify them.

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

66

FCC complaints since November 2023

5

Different 738 numbers reported

66

FCC complaints naming a 738 number, by month

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

Show as a table
MonthComplaints
November 20230
December 20230
January 20240
February 20240
March 20240
April 20240
May 20240
June 20240
July 20240
August 20240
September 20240
October 20240
November 20240
December 20240
January 20250
February 20251
March 20250
April 20250
May 20250
June 20250
July 20250
August 20250
September 20250
October 20250
November 20250
December 20250
January 20260
February 20260
March 20260
April 20260
May 20260
June 20261
July 20260
August 20260
September 20260
October 20261

What people said 738 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 48 of 66 reports were robocalls.

Show as a table
SubjectReports
Other28
Dropped call or no message18
Reducing your debt (credit cards, mortgage, student loans)9
Calls pretending to be government, businesses, or family and friends4
Medical and prescriptions1

Places served by 738

NANPA lists 15 rate centers for 738. 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.
  • Los Angeles: DA 065
  • Los Angeles: DA 043
  • Los Angeles: DA 012
  • Los Angeles: DA 022
  • Los Angeles: DA 082
  • Los Angeles: DA 092
  • Los Angeles: DA 102
  • Los Angeles: DA 122
  • Los Angeles: DA 132
  • Los Angeles: DA 142
  • Montebello2
  • Los Angeles: DA 031
  • Los Angeles: DA 051
  • Los Angeles: DA 071
  • Los Angeles: DA 111

Phone companies holding 738 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 8 carriers

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

Show as a table
Carrier (legal name)Exchanges
Onvoy, LLC - CA19
Wide Voice, LLC - CA4
T-Mobile USA, Inc.2
8x8, Inc.1
Boost Subscriberco L.L.C.1
Exiant Communications LLC1
New Cingular Wireless PCS, LLC1
Opentact Inc.1

Check a 738 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 California

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