350 Area Code — Scam Calls, Location & Who's Calling
Area code 350 serves California in the Pacific time zone, in service since 2022. The FCC has 37 unwanted-call complaints against 36 different 350 numbers on record. Look up the exact number that called you below.
Most-reported 350 numbers
Ranked by FCC unwanted-call complaints. Click a number for its full report.
350 unwanted-call complaints, last 12 months
Monthly FCC complaint volume against 350 numbers. Spikes usually mark an active robocall campaign cycling through the code.
Carriers operating in 350
Carriers assigned to 350 prefixes that visitors have looked up so far — resolved from official NPA-NXX assignment records.
- BANDWIDTH.COM CLEC, LLC - CAC · 1 prefix
About area code 350
- Serves
- California
- Time zone
- Pacific
- In service since
- 2022-11-28
- Overlay
- Yes — 10-digit dialing
Source: NANPA numbering records, refreshed weekly.
Spam calls from 350? What to know
Seeing repeated missed calls from 350 numbers you don't recognize is the classic signature of neighbor-spoofing robocall campaigns. The caller isn't necessarily in California — spoofing software displays whatever digits the campaign chooses. Never call unknown numbers back; look them up first, and report unwanted calls to the FCC to build the public record.
Area code 350 FAQs
Where is area code 350?
Area code 350 serves California, in the Pacific time zone. It is part of an overlay complex, so multiple area codes serve the same territory and 10-digit dialing is required. It has been in service since 2022.
Why do I keep getting calls from 350 numbers?
Robocallers use "neighbor spoofing" — displaying a number with a local area code to make you more likely to answer. A call showing area code 350 may not originate from California at all. Look up the full 10-digit number on this site to see its complaint history before calling back.
Are 350 numbers safe to call back?
Area codes themselves are neither safe nor unsafe — 350 contains millions of legitimate lines alongside any spoofed or spam numbers. The FCC has logged 37 unwanted-call complaints against 36 distinct 350 numbers in our current data window. Check the specific number's report page before returning a missed call.