SILVERADO prefixes in area code 657
NANPA records 53 assigned NXX blocks to rate center SILVERADO in area code 657, 7.5% of the 703 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. 9 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (37), FRACTEL, LLC (6), ONVOY, LLC - CA (3). The earliest assignment on record here is 2015-08-27 and the most recent 2026-09-09. 53 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 714 – 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 |
|---|---|---|---|---|
| 657-209 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2017-06-05 | yes | yes |
| 657-260 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2015-09-22 | yes | yes |
| 657-287 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2016-01-15 | yes | yes |
| 657-293 | Onvoy ONVOY, LLC - CA | 2015-08-27 | yes | yes |
| 657-297 | Onvoy ONVOY, LLC - CA | 2016-01-18 | yes | yes |
| 657-310 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2017-07-10 | yes | yes |
| 657-314 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2017-07-24 | yes | yes |
| 657-316 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2016-04-11 | yes | yes |
| 657-317 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2018-09-27 | yes | yes |
| 657-323 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2017-03-20 | yes | yes |
| 657-332 | Onvoy ONVOY, LLC - CA | 2016-05-17 | yes | yes |
| 657-343 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2016-08-26 | yes | yes |
| 657-344 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2016-08-26 | yes | yes |
| 657-351 | T-Mobile T-MOBILE USA, INC. | 2016-11-02 | yes | yes |
| 657-353 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2017-02-10 | yes | yes |
| 657-359 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2018-06-12 | yes | yes |
| 657-361 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2017-05-19 | yes | yes |
| 657-369 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-01-22 | yes | yes |
| 657-380 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-04-22 | yes | yes |
| 657-382 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-05-21 | yes | yes |
| 657-389 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-08-12 | yes | yes |
| 657-406 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-10-30 | yes | yes |
| 657-409 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-11-08 | yes | yes |
| 657-410 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2019-03-14 | yes | yes |
| 657-415 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-02-10 | yes | yes |
| 657-423 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-02-28 | yes | yes |
| 657-432 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-04-03 | yes | yes |
| 657-449 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-08-05 | yes | yes |
| 657-461 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-10-08 | yes | yes |
| 657-462 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-11-06 | yes | yes |
| 657-477 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-12-28 | yes | yes |
| 657-486 | Telnyx TELNYX LLC | 2021-02-01 | yes | yes |
| 657-507 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2021-06-17 | yes | yes |
| 657-519 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2022-01-17 | yes | yes |
| 657-537 | T-Mobile T-MOBILE USA, INC. | 2021-12-10 | yes | yes |
| 657-538 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2021-03-29 | yes | yes |
| 657-544 | FRACTEL, LLC | 2021-07-07 | yes | yes |
| 657-587 | FRACTEL, LLC | 2021-06-17 | yes | yes |
| 657-590 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2022-05-27 | yes | yes |
| 657-627 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2022-10-21 | yes | yes |
| 657-649 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2023-01-04 | yes | yes |
| 657-664 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2023-02-02 | yes | yes |
| 657-715 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2023-12-27 | yes | yes |
| 657-726 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2024-03-06 | yes | yes |
| 657-732 | FRACTEL, LLC | 2019-05-13 | yes | yes |
| 657-784 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2025-01-10 | yes | yes |
| 657-788 | FRACTEL, LLC | 2021-01-04 | yes | yes |
| 657-832 | TON80 COMMUNICATIONS, LLC | 2022-01-12 | yes | yes |
| 657-844 | FRACTEL, LLC | 2021-04-20 | yes | yes |
| 657-850 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2026-04-22 | yes | yes |
| 657-880 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2026-06-09 | yes | yes |
| 657-886 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2026-09-09 | yes | no |
| 657-946 | FRACTEL, LLC | 2020-07-10 | 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 - CA | Verizon | 37 | 69.8% |
| FRACTEL, LLC | – | 6 | 11.3% |
| ONVOY, LLC - CA | Onvoy | 3 | 5.7% |
| T-MOBILE USA, INC. | T-Mobile | 2 | 3.8% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 1 | 1.9% |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | Peerless | 1 | 1.9% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 1 | 1.9% |
| TELNYX LLC | Telnyx | 1 | 1.9% |
| TON80 COMMUNICATIONS, LLC | – | 1 | 1.9% |
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 SILVERADO in area code 657?
53 blocks: 209, 260, 287, 293, 297, 310, 314, 316, 317, 323, 332, 343 and 41 more, all listed in the table above.
Which carriers have numbers in SILVERADO?
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (37 blocks), FRACTEL, LLC (6 blocks), ONVOY, LLC - CA (3 blocks), T-MOBILE USA, INC. (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), PEERLESS NETWORK OF CALIFORNIA, 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 SILVERADO 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.