WESTWOOD prefixes in area code 551
NANPA records 6 assigned NXX blocks to rate center WESTWOOD in area code 551, 2.0% 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. 4 holders hold those blocks, the largest being ONVOY, LLC - NJ (3), BANDWIDTH.COM CLEC, LLC - NJ (1), VONAGE AMERICA LLC (1). The earliest assignment on record here is 2018-07-30 and the most recent 2024-07-31. 6 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, 530 – 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 |
|---|---|---|---|---|
| 551-282 | Bandwidth BANDWIDTH.COM CLEC, LLC - NJ | 2018-07-30 | yes | yes |
| 551-310 | Vonage VONAGE AMERICA LLC | 2020-07-08 | yes | yes |
| 551-324 | Telnyx TELNYX LLC | 2021-07-21 | yes | yes |
| 551-398 | Onvoy ONVOY, LLC - NJ | 2024-07-31 | yes | yes |
| 551-751 | Onvoy ONVOY, LLC - NJ | 2021-01-26 | yes | yes |
| 551-800 | 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 |
|---|---|---|---|
| ONVOY, LLC - NJ | Onvoy | 3 | 50% |
| BANDWIDTH.COM CLEC, LLC - NJ | Bandwidth | 1 | 16.7% |
| VONAGE AMERICA LLC | Vonage | 1 | 16.7% |
| TELNYX LLC | Telnyx | 1 | 16.7% |
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 WESTWOOD in area code 551?
6 blocks: 282, 310, 324, 398, 751, 800. The table above gives the holder of each.
Which carriers have numbers in WESTWOOD?
ONVOY, LLC - NJ (3 blocks), BANDWIDTH.COM CLEC, LLC - NJ (1 block), VONAGE AMERICA LLC (1 block), TELNYX 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 WESTWOOD 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.