HAYWARD prefixes in area code 341
NANPA records 13 assigned NXX blocks to rate center HAYWARD in area code 341, 11.5% of the 113 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. 6 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC (3), ONVOY, LLC - CA (3), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2019-05-31 and the most recent 2026-09-29. 13 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 510, 715 – 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 |
|---|---|---|---|---|
| 341-208 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2021-10-26 | yes | yes |
| 341-221 | T-Mobile T-MOBILE USA, INC. | 2022-02-28 | yes | yes |
| 341-232 | Onvoy ONVOY, LLC - CA | 2023-05-12 | yes | yes |
| 341-240 | T-Mobile T-MOBILE USA, INC. | 2023-11-01 | yes | yes |
| 341-241 | Onvoy ONVOY, LLC - CA | 2022-07-13 | yes | yes |
| 341-245 | Onvoy ONVOY, LLC - CA | 2024-01-24 | yes | yes |
| 341-258 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2024-10-15 | yes | yes |
| 341-260 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2024-12-06 | yes | yes |
| 341-262 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2025-01-13 | yes | yes |
| 341-271 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2026-09-29 | yes | no |
| 341-386 | FRACTEL, LLC | 2021-04-18 | yes | yes |
| 341-777 | WIDE VOICE, LLC - CA | 2019-05-31 | yes | yes |
| 341-800 | FRACTEL, LLC | 2019-12-03 | 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 |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 3 | 23.1% |
| ONVOY, LLC - CA | Onvoy | 3 | 23.1% |
| T-MOBILE USA, INC. | T-Mobile | 2 | 15.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 2 | 15.4% |
| FRACTEL, LLC | – | 2 | 15.4% |
| WIDE VOICE, LLC - CA | – | 1 | 7.7% |
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 HAYWARD in area code 341?
13 blocks: 208, 221, 232, 240, 241, 245, 258, 260, 262, 271, 386, 777 and 1 more, all listed in the table above.
Which carriers have numbers in HAYWARD?
NEW CINGULAR WIRELESS PCS, LLC (3 blocks), ONVOY, LLC - CA (3 blocks), T-MOBILE USA, INC. (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (2 blocks), FRACTEL, LLC (2 blocks), WIDE VOICE, LLC - CA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is HAYWARD 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.