FIREISLAND prefixes in area code 631
NANPA records 6 assigned NXX blocks to rate center FIREISLAND in area code 631, 0.8% 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. 5 holders hold those blocks, the largest being LEVEL 3 COMMUNICATIONS, LLC - NY (2), TC SYSTEMS, INC. - NY (1), VERIZON NEW YORK, INC. (1). The earliest assignment on record here is 2013-10-08 and the most recent 2022-10-11. 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 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 |
|---|---|---|---|---|
| 631-437 | AT&T TC SYSTEMS, INC. - NY | 2013-10-08 | yes | yes |
| 631-440 | Lumen LEVEL 3 COMMUNICATIONS, LLC - NY | – | yes | yes |
| 631-570 | Lumen LEVEL 3 COMMUNICATIONS, LLC - NY | – | yes | yes |
| 631-583 | Verizon VERIZON NEW YORK, INC. | – | yes | yes |
| 631-631 | Bandwidth BANDWIDTH.COM CLEC, LLC - NY | 2022-10-11 | yes | yes |
| 631-817 | Onvoy ONVOY, LLC- NY | – | 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 |
|---|---|---|---|
| LEVEL 3 COMMUNICATIONS, LLC - NY | Lumen | 2 | 33.3% |
| TC SYSTEMS, INC. - NY | AT&T | 1 | 16.7% |
| VERIZON NEW YORK, INC. | Verizon | 1 | 16.7% |
| BANDWIDTH.COM CLEC, LLC - NY | Bandwidth | 1 | 16.7% |
| ONVOY, LLC- NY | Onvoy | 1 | 16.7% |
Frequently asked
Which prefixes belong to FIREISLAND in area code 631?
6 blocks: 437, 440, 570, 583, 631, 817. The table above gives the holder of each.
Which carriers have numbers in FIREISLAND?
LEVEL 3 COMMUNICATIONS, LLC - NY (2 blocks), TC SYSTEMS, INC. - NY (1 block), VERIZON NEW YORK, INC. (1 block), BANDWIDTH.COM CLEC, LLC - NY (1 block), ONVOY, LLC- NY (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is FIREISLAND 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.