HACKENSACK prefixes in area code 551
NANPA records 47 assigned NXX blocks to rate center HACKENSACK in area code 551, 15.7% of the 300 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. 12 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (14), NEW CINGULAR WIRELESS PCS, LLC - DC (12), OMNIPOINT COMMUNICATIONS, INC. - NJ (6). The earliest assignment on record here is 2001-10-17 and the most recent 2026-09-03. 46 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 codes 201, 218 – 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 |
|---|---|---|---|---|
| 551-215 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2017-10-17 | yes | yes |
| 551-219 | T-Mobile METROPCS, INC. | 2018-01-26 | yes | yes |
| 551-228 | Altice CABLEVISION LIGHTPATH, INC. - NJ | 2014-07-01 | yes | yes |
| 551-237 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2014-11-19 | yes | yes |
| 551-244 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2015-08-17 | yes | yes |
| 551-245 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2015-01-20 | yes | yes |
| 551-251 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2018-03-22 | yes | yes |
| 551-255 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2016-02-15 | yes | yes |
| 551-259 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2018-03-08 | yes | yes |
| 551-265 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2002-08-21 | yes | yes |
| 551-275 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2016-07-11 | yes | yes |
| 551-281 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2018-07-11 | yes | yes |
| 551-283 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2017-12-27 | yes | yes |
| 551-286 | Altice CABLEVISION LIGHTPATH, INC. - NJ | 2018-08-24 | yes | yes |
| 551-287 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2018-09-13 | yes | yes |
| 551-289 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2018-01-16 | yes | yes |
| 551-293 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2018-11-07 | yes | yes |
| 551-295 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NJ | 2018-11-26 | yes | yes |
| 551-302 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2019-04-03 | yes | yes |
| 551-335 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NJ | 2021-11-18 | yes | yes |
| 551-336 | FRACTEL, LLC | 2020-02-14 | yes | yes |
| 551-337 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2021-11-22 | yes | yes |
| 551-340 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NJ | 2019-01-28 | yes | yes |
| 551-352 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2022-07-08 | yes | yes |
| 551-354 | Dish BOOST SUBSCRIBERCO L.L.C. | 2022-08-01 | yes | yes |
| 551-361 | Bandwidth BANDWIDTH.COM CLEC, LLC - NJ | 2022-10-20 | yes | yes |
| 551-368 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NJ | 2023-01-09 | yes | yes |
| 551-393 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2024-05-09 | yes | yes |
| 551-397 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2024-07-30 | yes | yes |
| 551-404 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NJ | 2002-04-16 | yes | yes |
| 551-405 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2024-09-19 | yes | yes |
| 551-409 | Onvoy ONVOY, LLC - NJ | 2024-11-07 | yes | yes |
| 551-412 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2024-11-25 | yes | yes |
| 551-422 | Onvoy ONVOY, LLC - NJ | 2025-04-16 | yes | yes |
| 551-423 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2025-05-20 | yes | no |
| 551-433 | WAVENATION, LLC | 2025-12-05 | yes | yes |
| 551-439 | Onvoy ONVOY, LLC - NJ | 2026-08-12 | yes | no |
| 551-440 | AT&T NEW CINGULAR WIRELESS PCS, LLC - DC | 2026-09-03 | yes | no |
| 551-449 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | – | yes | yes |
| 551-486 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2001-12-19 | no | yes |
| 551-497 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 2005-06-13 | yes | yes |
| 551-587 | T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NJ | 2001-10-17 | yes | yes |
| 551-775 | Bandwidth BANDWIDTH.COM CLEC, LLC - NJ | 2016-06-24 | yes | yes |
| 551-837 | TON80 COMMUNICATIONS, LLC | 2021-03-16 | yes | yes |
| 551-946 | FRACTEL, LLC | 2020-10-14 | yes | yes |
| 551-996 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 2007-07-17 | yes | yes |
| 551-999 | Onvoy ONVOY, LLC - NJ | – | yes | 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 |
|---|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | Verizon | 14 | 29.8% |
| NEW CINGULAR WIRELESS PCS, LLC - DC | AT&T | 12 | 25.5% |
| OMNIPOINT COMMUNICATIONS, INC. - NJ | T-Mobile | 6 | 12.8% |
| ONVOY, LLC - NJ | Onvoy | 4 | 8.5% |
| CABLEVISION LIGHTPATH, INC. - NJ | Altice | 2 | 4.3% |
| FRACTEL, LLC | – | 2 | 4.3% |
| BANDWIDTH.COM CLEC, LLC - NJ | Bandwidth | 2 | 4.3% |
| METROPCS, INC. | T-Mobile | 1 | 2.1% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 1 | 2.1% |
| WAVENATION, LLC | – | 1 | 2.1% |
| TON80 COMMUNICATIONS, LLC | – | 1 | 2.1% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | AT&T | 1 | 2.1% |
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 HACKENSACK in area code 551?
47 blocks: 215, 219, 228, 237, 244, 245, 251, 255, 259, 265, 275, 281 and 35 more, all listed in the table above.
Which carriers have numbers in HACKENSACK?
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (14 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (12 blocks), OMNIPOINT COMMUNICATIONS, INC. - NJ (6 blocks), ONVOY, LLC - NJ (4 blocks), CABLEVISION LIGHTPATH, INC. - NJ (2 blocks), FRACTEL, LLC (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is HACKENSACK 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.