671 Area Code — GU
Area code 671 serves GU in the (UTC+10) time zone, in service since 1997. Look up the exact number that called you below.
Reported 671 numbers
No 671 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.
About area code 671
- Serves
- GU
- Time zone
- (UTC+10)
- In service since
- 1997-07-01
- Overlay
- No
Source: NANPA numbering records, refreshed weekly.
Spam calls from 671? What to know
Seeing repeated missed calls from 671 numbers you don't recognize is the classic signature of neighbor-spoofing robocall campaigns. The caller isn't necessarily in GU — 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 671 FAQs
Where is area code 671?
Area code 671 serves GU, in the (UTC+10) time zone. It has been in service since 1997.
Why do I keep getting calls from 671 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 671 may not originate from GU at all. Look up the full 10-digit number on this site to see its complaint history before calling back.
Are 671 numbers safe to call back?
Area codes themselves are neither safe nor unsafe — 671 contains millions of legitimate lines alongside any spoofed or spam numbers. Check the specific number's report page before returning a missed call.