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| Raw Number | 540990 |
| Basic Format | 540-990 |
| NPA (Area Code) | 540 |
| NXX | 990 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date | Block Available Date |
|---|---|---|---|---|---|---|---|---|---|---|
| 540-990-0XXX | 506J | TWILIO INTERNATIONAL, INC. | DAHLGREN | AV | DAHLGREN | VA | MA | 11/26/2024 | ||
| 540-990-1XXX | 138E | ONVOY, LLC - VA | DAHLGREN | AS | 05/13/2020 | DAHLGREN | VA | MA | 07/10/2020 | |
| 540-990-2XXX | 138E | ONVOY, LLC - VA | DAHLGREN | AS | 05/13/2020 | DAHLGREN | VA | MA | 07/10/2020 | |
| 540-990-3XXX | 4036 | NEW CINGULAR WIRELESS PCS, LLC - DC | DAHLGREN | AS | 03/05/2021 | DAHLGREN | VA | MA | 04/02/2021 | |
| 540-990-4XXX | 506J | TWILIO INTERNATIONAL, INC. | DAHLGREN | AS | 02/15/2022 | DAHLGREN | VA | MA | 04/10/2022 | |
| 540-990-5XXX | 5562 | METROPCS, INC. | DAHLGREN | AS | 08/30/2021 | DAHLGREN | VA | MA | 09/23/2021 | |
| 540-990-6XXX | 506J | TWILIO INTERNATIONAL, INC. | DAHLGREN | AV | DAHLGREN | VA | MA | 04/10/2022 | ||
| 540-990-7XXX | 4036 | NEW CINGULAR WIRELESS PCS, LLC - DC | DAHLGREN | AS | 08/24/2023 | DAHLGREN | VA | MA | 09/23/2023 | |
| 540-990-8XXX | 624H | ONVOY SPECTRUM, LLC | DAHLGREN | AS | 11/08/2021 | DAHLGREN | VA | MA | 12/02/2021 | |
| 540-990-9XXX | 624H | ONVOY SPECTRUM, LLC | DAHLGREN | AS | 11/08/2021 | DAHLGREN | VA | MA | 12/02/2021 | |
| 540-990-XXXX | 506J | TWILIO INTERNATIONAL, INC. | DAHLGREN | AS | DAHLGREN | VA |
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