Phone numbers in St. James, New York
St. James has 8 phone prefixes in area codes 631, 934.
Biggest holders: MCImetro (Verizon Business), Verizon (local phone), Cablevision Lightpath. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 25%
- Internet / business phone carrier 75%
Every prefix in St. James
Search the first six digits of a number in this list. If it's here, the number started in St. James with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 631-250 | Csc Voice | Internet / business phone carrier | 2013 |
| 631-551 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 631-584 | Verizon (local phone) | Local phone company | – |
| 631-621 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 631-686 | Cablevision Lightpath | Internet / business phone carrier | – |
| 631-862 | Verizon (local phone) | Local phone company | – |
| 934-202 | Cablevision Lightpath | Internet / business phone carrier | 2021 |
| 934-245 | Commio | Internet / business phone carrier | 2023 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.