You are reviewing the Area Code (NPA/NXX) report for 840-257. Did you mean to search the SMS short code 840257?
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| Raw Number | 840257 |
| Basic Format | 840-257 |
| NPA (Area Code) | 840 |
| NXX | 257 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | State | Region | Block Effective Date |
|---|---|---|---|---|---|---|---|---|
| 840-257-0XXX | 6006 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | COLTON | AS | 04/09/2024 | CA | WC | 06/02/2024 |
| 840-257-1XXX | 6006 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | COLTON | AS | 04/09/2024 | CA | WC | 06/02/2024 |
| 840-257-2XXX | 6006 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | COLTON | AS | 04/09/2024 | CA | WC | 07/11/2024 |
| 840-257-3XXX | 6006 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | COLTON | AS | 04/09/2024 | CA | WC | 08/11/2024 |
| 840-257-4XXX | 6006 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | COLTON | AS | 05/09/2025 | CA | WC | 06/16/2025 |
| 840-257-5XXX | 6010 | NEW CINGULAR WIRELESS PCS, LLC | COLTON | AS | 11/12/2024 | CA | WC | 12/08/2024 |
| 840-257-6XXX | 6529 | T-MOBILE USA, INC. | COLTON | AS | 06/12/2024 | CA | WC | 07/07/2024 |
| 840-257-7XXX | 6006 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | COLTON | AS | 01/29/2025 | CA | WC | 03/04/2025 |
| 840-257-8XXX | 624H | ONVOY SPECTRUM, LLC | COLTON | AS | 12/26/2024 | CA | WC | 01/23/2025 |
| 840-257-9XXX | 6529 | T-MOBILE USA, INC. | COLTON | AS | 03/28/2024 | CA | WC | 06/01/2024 |
| 840-257-XXXX | 6529 | T-MOBILE USA, INC. | COLTON | AS | 03/28/2024 | CA |
Reports
Anonymous User from Groton, Massachusetts
December 20, 2025 at 2:33 PM