The 837 area code is currently linked to aggressive calls about switching electric companies. Telemarketers push hard to change your utility provider often without your clear permission.
Look up any suspicious number using our scam and spam phone number lookup database. It includes over 29 million Do Not Call and robocall complaints reported to the Federal Trade Commission.
Callers from numbers showing "unknown name" on caller ID are making repeated attempts to get residents to switch electric companies. These robocallers hang up immediately if an answering machine picks up, call multiple times per day, and often leave only dead air when you answer. They use your interest or any information you provide to sign you up for a new electric supplier without proper authorization. One person reported 14 calls in a single week from the same number. Real utility companies send official communications by mail with clear company identification.
"Spammer to switch electric companies. Comes up as 'unknown name.' Called me 14 times over a week's period. I finally figured out how to block the number."
No, area code 837 is not a scam. It's a legitimate telephone area code serving millions of legitimate residents and businesses in California, United States. Area code 837 is a general purpose code that has been in service since January 31, 2025.
You're likely experiencing "Neighbor Spoofing." Scammers fake their caller ID to display local or familiar numbers. If you live in or near , or have a 837 phone number yourself, scammers know you're more likely to answer what appears to be a local call.
Other California area codes where scam and spam calls are regularly reported: