640 Area Code — NJ
Area code 640 serves NJ in the Eastern time zone, in service since 2018. The FCC has 14 unwanted-call complaints against 14 different 640 numbers on record. Look up the exact number that called you below.
Reported 640 numbers
No 640 numbers currently pass our complaint threshold. Look up the exact number that called you — the lookup works on every US number, whether or not it has complaint history.
640 unwanted-call complaints, last 12 months
Monthly FCC complaint volume against 640 numbers. Spikes usually mark an active robocall campaign cycling through the code.
About area code 640
- Serves
- NJ
- Time zone
- Eastern
- In service since
- 2018-09-17
- Overlay
- Yes — 10-digit dialing
Source: NANPA numbering records, refreshed weekly.
Spam calls from 640? What to know
Seeing repeated missed calls from 640 numbers you don't recognize is the classic signature of neighbor-spoofing robocall campaigns. The caller isn't necessarily in NJ — 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 640 FAQs
Where is area code 640?
Area code 640 serves NJ, in the Eastern 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 2018.
Why do I keep getting calls from 640 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 640 may not originate from NJ at all. Look up the full 10-digit number on this site to see its complaint history before calling back.
Are 640 numbers safe to call back?
Area codes themselves are neither safe nor unsafe — 640 contains millions of legitimate lines alongside any spoofed or spam numbers. The FCC has logged 14 unwanted-call complaints against 14 distinct 640 numbers in our current data window. Check the specific number's report page before returning a missed call.