Area Code Details for: 738
Inactive Area Code
Area code 738 is currently inactive. An inactive area code cannot be used for phone calls or text messages. If you receive a message or phone call from this area code, it is likely a spoofed call that could be malicious or spam.
November 1, 2024
Planned In-Service Date
The North American Numbering Plan Administrator (NANPA) has not assigned area code 738. It may be reserved for future use.
Learn MoreLocation
State
California
Country
US
Details
| State | California (CA) |
| Time Zone | |
| Parent NPA | 323 |
Relief Planning in ProgressArea code relief planning is the process of addressing the exhaustion of available telephone numbers within an area code. When the supply of numbers in an existing area code is running low, NANPA works with the telecommunications industry to introduce new area codes. | Yes |
| In Service Date | November 1, 2024 |
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