| 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 |
|---|---|---|---|
| 631-384 | Suffolk | Selden, NY | Sprint Spectrum L.p. |
| 631-385 | Suffolk | Huntington, NY | Verizon New York |
| 631-386 | Nassau | Farmingdale, NY | Paetec Communications |
| 631-387 | Suffolk | Commack, NY | Teleport Communications Group |
| 631-388 | Nassau | Woodbury, NY | Cablevision Lightpath |
| 631-389 | Suffolk | Ronkonkoma, NY | Broadview Networks |
| 631-390 | Nassau | Farmingdale, NY | Cablevision Lightpath |
| 631-391 | Nassau | Farmingdale, NY | Verizon New York |
| 631-392 | Suffolk | Deer Park, NY | Cablevision Lightpath |
| 631-393 | Nassau | Farmingdale, NY | Cablevision Lightpath |
| 631-394 | Suffolk | Yaphank, NY | Sprint Spectrum L.p. |
| 631-395 | Suffolk | Mastic, NY | Verizon New York |
| 631-396 | Nassau | Farmingdale, NY | Cablevision Lightpath |
| 631-397 | Suffolk | Amityville, NY | Bandwidth.com Clec |
| 631-398 | Suffolk | Brentwood, NY | Omnipoint Communications |
| 631-399 | Suffolk | Mastic, NY | Verizon New York |
| 631-400 | Suffolk | Ctr Moriches, NY | Telcentris Communications |
| 631-402 | Suffolk | Brentwood, NY | Telengy L.l.c. |
| 631-403 | Suffolk | Port Jefferson, NY | Xo New York |
| 631-404 | Suffolk | Brentwood, NY | AT&T Local |
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.