RONKONKOMA prefixes in area code 631
NANPA records 24 assigned NXX blocks to rate center RONKONKOMA in area code 631, 3.1% of the 782 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 11 holders hold those blocks, the largest being VERIZON NEW YORK, INC. (10), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY (3), LEVEL 3 COMMUNICATIONS, LLC - NY (2). The earliest assignment on record here is 2001-04-04 and the most recent 2025-03-27. 15 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 934 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 631-202 | Onvoy ONVOY, LLC- NY | 2016-02-09 | yes | yes |
| 631-285 | Verizon VERIZON NEW YORK, INC. | – | yes | yes |
| 631-389 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 631-428 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY | 2001-04-04 | no | yes |
| 631-467 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 631-468 | Verizon VERIZON NEW YORK, INC. | – | yes | yes |
| 631-471 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 631-542 | TELENGY L.L.C. - NY | 2012-03-16 | yes | yes |
| 631-580 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 631-585 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 631-588 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 631-590 | Lumen LEVEL 3 COMMUNICATIONS, LLC - NY | – | yes | yes |
| 631-615 | Lumen LEVEL 3 COMMUNICATIONS, LLC - NY | – | yes | yes |
| 631-619 | AT&T TC SYSTEMS, INC. - NY | – | yes | yes |
| 631-648 | Altice CABLEVISION LIGHTPATH, INC. - NY | – | yes | yes |
| 631-676 | CSC VOICE, LLC | 2004-08-20 | yes | yes |
| 631-710 | Altice CABLEVISION LIGHTPATH, INC. - NY | 2018-06-06 | yes | yes |
| 631-718 | T-Mobile METROPCS, INC. | 2025-03-27 | yes | yes |
| 631-737 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 631-738 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
| 631-739 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | – | yes | yes |
| 631-820 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | – | yes | yes |
| 631-913 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | – | yes | yes |
| 631-981 | Verizon VERIZON NEW YORK, INC. | – | no | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| VERIZON NEW YORK, INC. | Verizon | 10 | 41.7% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | Verizon | 3 | 12.5% |
| LEVEL 3 COMMUNICATIONS, LLC - NY | Lumen | 2 | 8.3% |
| CABLEVISION LIGHTPATH, INC. - NY | Altice | 2 | 8.3% |
| ONVOY, LLC- NY | Onvoy | 1 | 4.2% |
| PAETEC ITEL, LLC | Windstream | 1 | 4.2% |
| OMNIPOINT COMMUNICATIONS, INC. - NY | T-Mobile | 1 | 4.2% |
| TELENGY L.L.C. - NY | – | 1 | 4.2% |
| TC SYSTEMS, INC. - NY | AT&T | 1 | 4.2% |
| CSC VOICE, LLC | – | 1 | 4.2% |
| METROPCS, INC. | T-Mobile | 1 | 4.2% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to RONKONKOMA in area code 631?
24 blocks: 202, 285, 389, 428, 467, 468, 471, 542, 580, 585, 588, 590 and 12 more, all listed in the table above.
Which carriers have numbers in RONKONKOMA?
VERIZON NEW YORK, INC. (10 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - NY (2 blocks), CABLEVISION LIGHTPATH, INC. - NY (2 blocks), ONVOY, LLC- NY (1 block), PAETEC ITEL, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is RONKONKOMA a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.