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631 Area Code — Scam Calls, Location & Who's Calling

Area code 631 serves New York in the Eastern time zone, in service since 1999. The FCC has 4,814 unwanted-call complaints against 3,243 different 631 numbers on record. Look up the exact number that called you below.

Most-reported 631 numbers

Ranked by FCC unwanted-call complaints. Click a number for its full report.

631 unwanted-call complaints, last 12 months

Monthly FCC complaint volume against 631 numbers. Spikes usually mark an active robocall campaign cycling through the code.

Carriers operating in 631

Carriers assigned to 631 prefixes that visitors have looked up so far — resolved from official NPA-NXX assignment records.

  • VERIZON NEW YORK, INC.I · 23 prefixes
  • MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NYC · 22 prefixes
  • LEVEL 3 COMMUNICATIONS, LLC - NYC · 19 prefixes
  • TC SYSTEMS, INC. - NYC · 12 prefixes
  • CABLEVISION LIGHTPATH, INC. - NYC · 12 prefixes
  • ONVOY, LLC- NYC · 10 prefixes
  • PAETEC ITEL, LLCC · 9 prefixes
  • CSC VOICE, LLCC · 8 prefixes

About area code 631

Serves
New York
Time zone
Eastern
In service since
1999-11-01
Overlay
Yes — 10-digit dialing

Source: NANPA numbering records, refreshed weekly.

Spam calls from 631? What to know

Seeing repeated missed calls from 631 numbers you don't recognize is the classic signature of neighbor-spoofing robocall campaigns. The caller isn't necessarily in New York — 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 631 FAQs

Where is area code 631?

Area code 631 serves New York, 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 1999.

Why do I keep getting calls from 631 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 631 may not originate from New York at all. Look up the full 10-digit number on this site to see its complaint history before calling back.

Are 631 numbers safe to call back?

Area codes themselves are neither safe nor unsafe — 631 contains millions of legitimate lines alongside any spoofed or spam numbers. The FCC has logged 4,814 unwanted-call complaints against 3,243 distinct 631 numbers in our current data window. Check the specific number's report page before returning a missed call.