Area Code 631
Area code 631 covers Brentwood, New York (Eastern Time) and nearby Centereach, Central Islip and Commack; overlay 934 shares the same area.
Area code 631 quick facts
| Location | Brentwood, New York |
|---|---|
| Time zone | Eastern Time |
| In service | 1999-11-01 |
| Overlay codes | 934 |
| Nearby codes | 934, 363, 516, 203, 475, 914 |
| Carrier coverage | 782 prefixes; 32% wireless |
| FTC complaint data | 593 complaints across 171 numbers |
| Data current as of | November 2, 2026 |
Is a call from 631 a scam? Who called me from 631?
FTC complaints involving 631 numbers
Numbers shown with area code 631 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Other”, “Reducing your debt (credit cards, mortgage, student loans)”, “No Subject Provided”.
Most-complained 631 numbers:
- (631) 215-3613 — 17 complaints
- (631) 698-2834 — 8 complaints
- (631) 397-3640 — 8 complaints
- (631) 203-2100 — 7 complaints
- (631) 209-7409 — 6 complaints
These are FTC Do Not Call complaints filed about specific numbers shown with this area code — frequently spoofed. The area code itself is not a scam. See the most-reported area codes and the most-reported phone numbers nationwide.
Cities in area code 631
Brentwood, Centereach, Central Islip, Commack, Copiague, Coram, Deer Park, Dix Hills, East Northport, East Patchogue, Hauppauge, Holbrook
Carriers in area code 631
Area code 631 spans 782 prefixes, about 32% wireless. Top carriers: VERIZON NEW YORK, INC., ONVOY, LLC- NY, OMNIPOINT COMMUNICATIONS, INC. - NY, CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY. Look up the carrier and line type for a 631 number.
Other New York area codes
- 212 — New York City
- 315 — Syracuse
- 329 — Kingston
- 332 — New York City
- 347 — New York City
- 363 — Nassau
- 465 — New York City
- 516 — Nassau
- 518 — Albany
- 585 — Rochester
- 607 — Binghamton
- 624 — Buffalo
- 646 — New York City
- 680 — Syracuse
- 716 — Buffalo
- 718 — New York City
- 838 — Albany
- 845 — Poughkeepsie
- 914 — Westchester
- 917 — New York City
- 929 — New York City
- 934 — Riverhead
Nearby area codes
Frequently asked questions
Where is area code 631?
Area code 631 covers Brentwood, New York (Eastern Time) and nearby Centereach, Central Islip and Commack; overlay 934 shares the same area.
What cities use area code 631?
Area code 631 serves Brentwood, Centereach, Central Islip, Commack, Copiague, and 17 other communities in New York.
What time zone is area code 631 in?
Area code 631 is in the Eastern Time (America/New_York).
How do you dial a 631 number?
Dial all 10 digits: 631 followed by the 7-digit local number. From abroad, dial +1 631 and the local number.
Is a call from area code 631 a scam?
A 631 number is geographically tied to New York, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.
Is 631 a country code?
No. 631 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 631 number written for international dialing looks like +1 631 followed by the 7-digit local number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of November 2, 2026. Refreshed monthly.