Learn more about this area code and exchange and where the caller may be located.
The phone exchange is the three digits after the area code and before the extension. An example is (707) 431-XXXX where 431 is the exchange number. It enables telephone line extensions to be interconnected in a local area based on a specific geographic assignment.
The (707) 431 exchange is located within the 707 area code in San Francisco-Oakland-San Jose, CA. It connects landline numbers from the AT&T California carrier in Sonoma county. Associated zip codes include 95448.
Potentially, callers could keep their phone numbers even if they move away, so a caller may be located in San Francisco-Oakland-San Jose, CA or elsewhere. You can use a reverse phone lookup to help find the registered address for a potential caller.