660 Area Code — MO
Area code 660 serves MO in the Central time zone, in service since 1997. The FCC has 37 unwanted-call complaints against 36 different 660 numbers on record. Look up the exact number that called you below.
Most-reported 660 numbers
Ranked by FCC unwanted-call complaints. Click a number for its full report.
660 unwanted-call complaints, last 12 months
Monthly FCC complaint volume against 660 numbers. Spikes usually mark an active robocall campaign cycling through the code.
About area code 660
- Serves
- MO
- Time zone
- Central
- In service since
- 1997-10-12
- Overlay
- No
Source: NANPA numbering records, refreshed weekly.
Spam calls from 660? What to know
Seeing repeated missed calls from 660 numbers you don't recognize is the classic signature of neighbor-spoofing robocall campaigns. The caller isn't necessarily in MO — 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 660 FAQs
Where is area code 660?
Area code 660 serves MO, in the Central time zone. It has been in service since 1997.
Why do I keep getting calls from 660 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 660 may not originate from MO at all. Look up the full 10-digit number on this site to see its complaint history before calling back.
Are 660 numbers safe to call back?
Area codes themselves are neither safe nor unsafe — 660 contains millions of legitimate lines alongside any spoofed or spam numbers. The FCC has logged 37 unwanted-call complaints against 36 distinct 660 numbers in our current data window. Check the specific number's report page before returning a missed call.