TC SYSTEMS, INC. - NY
34 prefixes in 631 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 631-213 | MIDLAND | 7140 | — | Yes |
| 631-239 | NORTHPORT | 7140 | — | Yes |
| 631-247 | FARMINGDL | 7140 | — | Yes |
| 631-256 | SAYVILLE | 7140 | — | Yes |
| 631-312 | PATCHOGUE | 7140 | — | Yes |
| 631-370 | FARMINGDL | 7140 | — | Yes |
| 631-380 | STONYBROOK | 7140 | — | Yes |
| 631-387 | COMMACK | 7140 | — | Yes |
| 631-437 | FIREISLAND | 7140 | 2013-10-08 | Yes |
| 631-457 | BRENTWOOD | 7140 | — | Yes |
| 631-503 | CTRMORICHS | 7140 | — | Yes |
| 631-561 | SELDEN | 7140 | — | Yes |
| 631-607 | WADING RIV | 7140 | 2018-09-06 | Yes |
| 631-619 | RONKONKOMA | 7140 | — | Yes |
| 631-623 | W COMMACK | 7140 | — | Yes |
| 631-639 | BRENTWOOD | 7140 | — | Yes |
| 631-655 | RIVERHEAD | 7140 | — | Yes |
| 631-688 | FARMINGDL | 7140 | — | Yes |
| 631-693 | AMITYVILLE | 7140 | — | Yes |
| 631-701 | EASTPORT | 7140 | — | Yes |
| 631-712 | FARMINGDL | 7140 | — | Yes |
| 631-715 | CENTRAISLP | 7140 | — | Yes |
| 631-729 | ATLANTIC | 7140 | — | Yes |
| 631-760 | HUNTINGTON | 7140 | — | Yes |
| 631-784 | CENTRAISLP | 7140 | — | Yes |
| 631-787 | CENTRAISLP | 7140 | — | Yes |
| 631-792 | BABYLON | 7140 | — | Yes |
| 631-823 | BAYPORT | 7140 | — | Yes |
| 631-866 | BELLPORT | 7140 | — | Yes |
| 631-894 | BAY SHORE | 7140 | — | Yes |
| 631-918 | DEER PARK | 7140 | — | Yes |
| 631-960 | ISLIP | 7140 | — | Yes |
| 631-973 | KINGS PARK | 7140 | — | Yes |
| 631-991 | LINDENHST | 7140 | — | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.