Area Code 738
Area code 738 covers Los Angeles and nearby cities including South Gate, Montebello, Huntington Park in California, in the Pacific Time.
Area code 738 quick facts
| Location | Los Angeles, California |
|---|---|
| Time zone | Pacific Time |
| In service | 2024-11-01 |
| Overlay codes | 213, 323 |
| Nearby codes | 213, 323, 310, 424, 626, 562 |
| Carrier coverage | 18 prefixes; 15% wireless |
| FTC complaint data | 29 complaints across 8 numbers |
| Data current as of | August 2, 2026 |
Area code 738 is one of the newest NANP area codes
Area code 738 is one of the most recently added codes in the North American Numbering Plan, in service since November 1, 2024. It is an overlay that shares its territory with 213, 323, adding fresh numbers as those codes fill up. Existing numbers in the area keep their codes; only new phone lines may be issued a 738 number.
Because 738 is new and unfamiliar, some people are wary when it appears on caller ID and search for “who called me from 738?” An area code only shows where a number is registered, and any number can be spoofed — so a 738 call is not suspicious on its own. Judge each call by what it asks for, not the code. Is a call from 738 a scam?
Is a call from 738 a scam? Who called me from 738?
FTC complaints involving 738 numbers
Numbers shown with area code 738 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Dropped call or no message”, “Other”.
Most-complained 738 numbers:
- (738) 333-0057 — 5 complaints
- (738) 333-0020 — 4 complaints
- (738) 333-0031 — 4 complaints
- (738) 333-0013 — 4 complaints
- (738) 333-0016 — 3 complaints
These are FTC Do Not Call complaints filed about specific numbers shown with this area code — frequently spoofed. The area code itself is not a scam. See the most-reported area codes and the most-reported phone numbers nationwide.
Cities in area code 738
Los Angeles, South Gate, Montebello, Huntington Park, Bell Gardens, Bell, Cudahy, East Los Angeles, Florence-Graham, Maywood, West Hollywood, Westmont
Area codes by city
Carriers in area code 738
Area code 738 spans 18 prefixes, about 15% wireless. Top carriers: ONVOY, LLC - CA, WIDE VOICE, LLC - CA, T-MOBILE USA, INC., CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA. Look up the carrier and line type for a 738 number.
Other California area codes
- 209 — Stockton
- 213 — Los Angeles
- 279 — Sacramento
- 310 — Compton
- 323 — Los Angeles
- 341 — Oakland
- 350 — Stockton
- 357 — Fresno
- 369 — Santa Rosa
- 408 — San Jose
- 415 — San Francisco
- 424 — Compton
- 442 — Victorville
- 510 — Oakland
- 530 — Marysville
- 559 — Fresno
- 562 — Long Beach
- 619 — San Diego
- 626 — Alhambra
- 628 — San Francisco
- 650 — Palo Alto
- 657 — Anaheim
- 661 — Bakersfield
- 669 — San Jose
- 707 — Santa Rosa
- 714 — Anaheim
- 747 — San Fernando
- 760 — Oceanside
- 805 — Oxnard
- 818 — Van Nuys
- 820 — Camarillo
- 831 — Salinas
- 837 — Redding
- 840 — Pomona
- 858 — San Diego
- 909 — Ontario
- 916 — Sacramento
- 925 — Concord
- 949 — Irvine
- 951 — Riverside
Nearby area codes
Frequently asked questions
Where is area code 738?
Area code 738 covers Los Angeles and nearby cities including South Gate, Montebello, Huntington Park in California, in the Pacific Time.
What cities use area code 738?
Area code 738 serves Los Angeles, South Gate, Montebello, Huntington Park, Bell Gardens, and 7 other communities in California.
What time zone is area code 738 in?
Area code 738 is in the Pacific Time (America/Los_Angeles).
How do you dial a 738 number?
Dial all 10 digits: 738 followed by the 7-digit local number. From abroad, dial +1 738 and the local number.
Is a call from area code 738 a scam?
A 738 number is geographically tied to California, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.
Is 738 a country code?
No. 738 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 738 number written for international dialing looks like +1 738 followed by the 7-digit local number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.