Discovering the truth about a phone number, email, or address history can be eye-opening, please use this tool with caution.USA Area code 350 - California, CA
Area code 350 is a North American Numbering Plan telephone area code serving Area codes in northern Central Valley, California in California. It was activated in 1958 .
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Who called me from area code 350?
A call from area code 350 most likely originates from California or elsewhere in California - but caller ID spoofing means the area code alone cannot confirm who called. Right now, 7 350 numbers carry scam reports on this page. The only reliable way to identify the caller is to check the full 10-digit number:
- Run the number through the reverse phone lookup at the top of this page to see the owner's name, carrier, and location.
- Compare it against the recently reported scam numbers in 350 below.
- If the call was unwanted, report it to the FTC and use the report form on this page so other 350 residents see it.
Report a scam call from 350 Help other 350-area residents - takes 20 seconds, no signup
Reports are reviewed by our team before appearing on the page. The highest-reported numbers get added to the “Recently reported scam numbers” list above with a “community” badge.
Should I answer a call from a 350 number? Take the 30-second quiz - 5 questions, verdict + advice
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Next step: run a reverse-phone lookup on the number to see everything public about it.
Cities in the 350 area code
Area code 350 serves the following 167 communities:
Area codes near 350 (overlay + neighboring)
If a caller ID shows one of these codes, the call is probably still from the California area or a nearby region. Click any code to see its own page.
350 area code robocall complaints (FCC data)
Monthly count of FCC complaints tagged to numbers in area code 350 over the last 12 months.
Source: FCC Consumer Complaint Data (dataset vakf-fz8e). Data as of August 9, 2026. Refreshed monthly.
How 350 area code spam calls arrive
Based on 7 FCC complaints in the last 12 months, here's how 350 spam calls reached recipients:
FCC Consumer Complaint Data, last 12 months as of August 9, 2026. Refreshed monthly. Note: the FCC dataset labels method (Live Voice / Prerecorded / SMS) but does not classify scam type (IRS impersonation, tech support fraud, etc.) - those come from community reports.
Recently reported scam numbers in 350
Numbers reported to the FCC or by our community in the last 12 months. Click any to run a full reverse-phone lookup.
Source: FCC Consumer Complaint Data, last 12 months as of August 9, 2026. Refreshed monthly. Numbers submitted via the report form near the top of this page get added here with a “community” badge after moderation.
How to block 350 spam calls (by carrier)
Getting repeated spam calls from 350 numbers around California, California? You can't legitimately block every 350 call without also missing legitimate ones from California, California - so the practical fix is to turn on your carrier's free spam filter and register on the national do-not-call list. Step-by-step for each major US carrier below.
AT&T
- Download the free AT&T ActiveArmor app (iOS + Android).
- Sign in with your wireless number.
- Enable Fraud Blocking and Suspected Spam Warning.
- To block a specific number, tap the call in your history → Block.
Verizon
- Download the free Verizon Call Filter app (iOS + Android).
- Sign in with your Verizon account.
- Turn on Spam Filter.
- To block a specific number: My Verizon → Blocks → Add Number.
T-Mobile
- Download the free Scam Shield app (iOS + Android).
- Enable Scam Block (blocks known scam calls silently).
- Use Scam ID to see “Scam Likely” caller ID on suspicious numbers.
- To block a specific number, dial
#662#from your device.
All carriers
- Register on the FTC's National Do-Not-Call list.
- Report unwanted calls to the FCC at fcc.gov/complaints.
- On iPhone: Settings → Phone → Silence Unknown Callers.
- On Android: Phone app → ⋮ → Settings → Caller ID & spam.
Sources: carrier support pages (AT&T, Verizon, T-Mobile), FCC consumer guides. Free features as of 2026. Every one of these steps costs nothing.
History of the 350 area code
state of California. Their service area includes the northern San Joaquin Valley and Sierra Foothills, including Stockton, Modesto and Merced. Area code 209 was created in an area code split of area code 916 in 1958.
350 area code FAQ: common questions
What area code is 350?
Area code 350 is a North American Numbering Plan area code that serves Area codes in northern Central Valley, California in California, primarily including California and surrounding communities. It was activated in 1958.
Where does area code 350 cover?
Area code 350 covers the California, California area.
Is 350 a real area code or a scam?
350 is a real, actively-assigned US area code - not itself a scam. However, spammers do use 350 numbers because the code is well-known and appears local to millions of residents. Always verify the specific number, not the area code.
How do I block 350 spam calls?
You cannot legitimately block an entire area code without also blocking legitimate calls from California. Better options: register on the National Do-Not-Call list, enable your carrier's spam-filter (all major US carriers now offer this free), and report unwanted calls to the FCC at fcc.gov/complaints so they show up in the trend data on this page.
What's the overlay area code for 350?
350 shares coverage with overlay code 209. That means new phone numbers issued in the same geographic area may have either area code, and 10-digit dialing is required.
Sources
Or explore reverse-phone lookup for any US number.