738 area code
Los Angeles area, Pacific Time.Area code 738 covers Los Angeles and Montebello in California, on Pacific Time. 213 and 323 cover the same area.
Right now in Los Angeles
Pacific Time (PST, UTC-8; PDT, UTC-7 in summer)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
Small talk
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Where 738 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 738 has 2. Each one's share is how many 738 numbers start there. Its biggest metro area is Los Angeles-Long Beach-Anaheim, CA.
- Los Angeles90%
- Montebello10%
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 738 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 738 number to them, since you can't tell a work line from a personal cell.
What applies to 738Every day, 8 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
738 and 213 and 323
738 went into service on November 1, 2024. 738, 213 and 323 cover the same area, so new numbers can get any of them and neighbors can have different area codes. 738 holds 1% of the area's exchanges; 323 holds the most. Local calls take all 10 digits.
- 1947213 overlay
- 1998323 overlay
- 2024738 starts
Source: NANPA area code database
Other California area codes
All California area codes- Stockton209350
- Sacramento279916
- Compton310424
- Oakland341510
- Fresno357559
- Santa Rosa369707
- San Jose408669
- San Francisco415628
- Oceanside442760
- Chico530837
- Long Beach562
- San Diego619858
- Alhambra626
- Palo Alto650
- Anaheim657714
- Bakersfield661
- Van Nuys747818
- Santa Barbara805820
- Salinas831
- Ontario840909
- Walnut Creek925
- Irvine949
- Riverside951
Calling a list of 738 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
738 area code FAQ
What area code is 738?
738 is a California area code for Los Angeles and Montebello.
What time zone is the 738 area code in?
Pacific Time (PST, UTC-8; PDT, UTC-7 in summer).
Is 213 the same as 738?
Same area, different code. 738, 213 and 323 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 738 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 738 area code start?
On November 1, 2024.
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