| District of New York area codes: 631 | |
|---|---|
| Country | United States |
| State/Province | New York |
| Major City | Deer Park |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 631-405 | Suffolk | Riverhead, NY | Xo New York |
| 631-406 | Suffolk | Smithtown, NY | Rcn Telecom Services |
| 631-407 | Suffolk | Southold, NY | Bandwidth.com Clec |
| 631-408 | Suffolk | Amityville, NY | Omnipoint Communications |
| 631-409 | Nassau | Wantagh, NY | Verizon New York |
| 631-410 | Suffolk | Commack, NY | Broadview Networks |
| 631-412 | Suffolk | Lindenhurst, NY | Xo New York |
| 631-413 | Suffolk | Selden, NY | New Cingular Wireless PCS - DC |
| 631-414 | Nassau | Farmingdale, NY | Cablevision Lightpath |
| 631-415 | Suffolk | Central Islip, NY | Global Crossing Local Services-ny |
| 631-416 | Suffolk | Brentwood, NY | Cellco Partnership DBA Verizon Wireless |
| 631-417 | Nassau | Hicksville, NY | Cablevision Lightpath |
| 631-418 | Suffolk | Huntington, NY | Allegiance Telecom |
| 631-419 | Suffolk | Sayville, NY | Verizon New York |
| 631-420 | Nassau | Farmingdale, NY | Verizon New York |
| 631-421 | Suffolk | Huntington, NY | Verizon New York |
| 631-422 | Suffolk | Babylon, NY | Verizon New York |
| 631-423 | Suffolk | Huntington, NY | Verizon New York |
| 631-424 | Suffolk | Huntington, NY | Verizon New York |
| 631-425 | Suffolk | Huntington, NY | Verizon New York |
There are 714 prefixes, In the code area, the major cities are Bay Shore, NY;Brentwood, NY;Centereach, NY;Central. The major city is Deer Park.