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 (628) 238-XXXX where 238 is the exchange number. It enables telephone line extensions to be interconnected in a local area based on a specific geographic assignment.
The (628) 238 exchange is located within the 628 area code in San Francisco-Oakland-San Jose, CA. It connects landline numbers from the Onvoy carrier in Marin county. Associated zip codes include 94949.
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.
People are Saying:
(628) 238-4178 - April 10th, 2026 6:22pm
Said they were Walmart calling in reference to charge on card with my name and account. I did not early, and reported it to SPAM!!!
(628) 238-8944 - April 21st, 2026 1:52am
Reported as spam through quick feedback
(628) 238-4178 - April 10th, 2026 6:16pm
Reported as spam through quick feedback
(628) 238-0844 - July 16th, 2021 3:51pm | Reported from San Clemente, CA
Spam calls
(628) 238-5149 - February 6th, 2021 11:22pm | Reported from Creston, IA
Money sxam
(628) 238-8283 - November 30th, 2021 10:22pm | Reported from Villa Rica, GA
Loan scammer