HEMPSTEAD prefixes in area code 979
NANPA records 9 assigned NXX blocks to rate center HEMPSTEAD in area code 979, 2.2% of the 413 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. 7 holders hold those blocks, the largest being LEVEL 3 COMMUNICATIONS, LLC - TX (2), SOUTHWESTERN BELL (2), TON80 COMMUNICATIONS, LLC (1). The earliest assignment on record here is 2002-03-29 and the most recent 2025-04-07. 7 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 979-221 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | – | yes | yes |
| 979-399 | Lumen LEVEL 3 COMMUNICATIONS, LLC - TX | 2002-03-29 | yes | yes |
| 979-588 | TON80 COMMUNICATIONS, LLC | 2022-03-15 | yes | yes |
| 979-606 | MATRIX TELECOM, LLC. S/I/I TNCI - TX | – | no | yes |
| 979-619 | IP HORIZON LLC | 2025-04-07 | yes | yes |
| 979-645 | T-Mobile AERIAL COMMUNICATIONS, INC. | – | yes | yes |
| 979-710 | Onvoy ONVOY, LLC - TX | – | yes | yes |
| 979-826 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 979-921 | AT&T SOUTHWESTERN BELL | – | 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 - TX | Lumen | 2 | 22.2% |
| SOUTHWESTERN BELL | AT&T | 2 | 22.2% |
| TON80 COMMUNICATIONS, LLC | – | 1 | 11.1% |
| MATRIX TELECOM, LLC. S/I/I TNCI - TX | – | 1 | 11.1% |
| IP HORIZON LLC | – | 1 | 11.1% |
| AERIAL COMMUNICATIONS, INC. | T-Mobile | 1 | 11.1% |
| ONVOY, LLC - TX | Onvoy | 1 | 11.1% |
Frequently asked
Which prefixes belong to HEMPSTEAD in area code 979?
9 blocks: 221, 399, 588, 606, 619, 645, 710, 826, 921. The table above gives the holder of each.
Which carriers have numbers in HEMPSTEAD?
LEVEL 3 COMMUNICATIONS, LLC - TX (2 blocks), SOUTHWESTERN BELL (2 blocks), TON80 COMMUNICATIONS, LLC (1 block), MATRIX TELECOM, LLC. S/I/I TNCI - TX (1 block), IP HORIZON LLC (1 block), AERIAL COMMUNICATIONS, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is HEMPSTEAD 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.