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| Raw Number | 423603 |
| Basic Format | 423-603 |
| NPA (Area Code) | 423 |
| NXX | 603 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date |
|---|---|---|---|---|---|---|---|---|---|
| 423-603-0XXX | 6214 | NEW CINGULAR WIRELESS PCS, LLC - GA | FORK RIDGE | AS | 09/19/2019 | FORK RIDGE | TN | SE | 10/18/2019 |
| 423-603-1XXX | 6214 | NEW CINGULAR WIRELESS PCS, LLC - GA | FORK RIDGE | AS | 09/19/2019 | FORK RIDGE | TN | SE | 10/18/2019 |
| 423-603-2XXX | 525E | ONVOY, LLC - TN | FORK RIDGE | AS | 06/15/2020 | FORK RIDGE | TN | SE | 07/01/2020 |
| 423-603-3XXX | 525E | ONVOY, LLC - TN | FORK RIDGE | AS | 06/15/2020 | FORK RIDGE | TN | SE | 07/01/2020 |
| 423-603-4XXX | 525E | ONVOY, LLC - TN | FORK RIDGE | AS | 06/15/2020 | FORK RIDGE | TN | SE | 07/01/2020 |
| 423-603-5XXX | 525E | ONVOY, LLC - TN | FORK RIDGE | AS | 06/15/2020 | FORK RIDGE | TN | SE | 07/01/2020 |
| 423-603-6XXX | 525E | ONVOY, LLC - TN | FORK RIDGE | AS | 07/31/2019 | FORK RIDGE | TN | SE | 08/29/2019 |
| 423-603-7XXX | 516C | AT&T ENTERPRISES, LLC | FORK RIDGE | AS | 12/18/2013 | FORK RIDGE | TN | SE | 01/29/2014 |
| 423-603-8XXX | 073H | TELNYX LLC | FORK RIDGE | AS | 12/30/2020 | FORK RIDGE | TN | SE | 01/23/2021 |
| 423-603-9XXX | 624H | ONVOY SPECTRUM, LLC | FORK RIDGE | AS | 01/26/2021 | FORK RIDGE | TN | SE | 02/24/2021 |
| 423-603-XXXX | 516C | AT&T ENTERPRISES, LLC | FORK RIDGE | AS | 12/13/2013 | FORK RIDGE | TN |
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