| 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 |
|---|---|---|---|
| 631-954 | Suffolk | Bay Shore, NY | AT&T Local |
| 631-955 | Suffolk | Deer Park, NY | Verizon New York |
| 631-956 | Suffolk | Lindenhurst, NY | Verizon New York |
| 631-957 | Suffolk | Lindenhurst, NY | Verizon New York |
| 631-960 | Suffolk | Huntington, NY | Teleport Communications Group |
| 631-961 | Suffolk | Babylon, NY | Broadwing Communications |
| 631-962 | Nassau | Westbury, NY | Mcimetro Access Transmission Services LLC |
| 631-963 | Suffolk | Central Islip, NY | Xo New York |
| 631-964 | Suffolk | Deer Park, NY | Xo New York |
| 631-965 | Suffolk | Riverhead, NY | New Cingular Wireless PCS - DC |
| 631-967 | Suffolk | Brentwood, NY | Broadview Networks |
| 631-968 | Suffolk | Brightwaters, NY | Verizon New York |
| 631-969 | Suffolk | Brightwaters, NY | Verizon New York |
| 631-970 | Rcn Telecom Services | ||
| 631-971 | Suffolk | Commack, NY | Broadview Networks |
| 631-972 | Suffolk | Brentwood, NY | Broadwing Communications |
| 631-973 | Suffolk | Huntington, NY | Teleport Communications Group |
| 631-974 | Suffolk | Smithtown, NY | Omnipoint Communications |
| 631-978 | Suffolk | Port Jefferson, NY | Allegiance Telecom |
| 631-979 | Suffolk | Smithtown, 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.