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| Raw Number | 443566 |
| Basic Format | 443-566 |
| NPA (Area Code) | 443 |
| NXX | 566 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date | Block Available Date |
|---|---|---|---|---|---|---|---|---|---|---|
| 443-566-0XXX | 6395 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | CHESAPKECY | AS | 09/16/2004 | CHESAPEAKE CITY | MD | MA | 11/12/2004 | |
| 443-566-1XXX | 6395 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | CHESAPKECY | AV | CHESAPEAKE CITY | MD | MA | 09/15/2025 | ||
| 443-566-2XXX | 6395 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | CHESAPKECY | AS | 08/02/2007 | CHESAPEAKE CITY | MD | MA | 09/01/2007 | |
| 443-566-3XXX | 6395 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | CHESAPKECY | AS | 01/11/2008 | CHESAPEAKE CITY | MD | MA | 01/29/2008 | |
| 443-566-4XXX | 6119 | LEVEL 3 COMMUNICATIONS, LLC - MD | CHESAPKECY | AS | 01/20/2014 | CHESAPEAKE CITY | MD | MA | 02/13/2014 | |
| 443-566-5XXX | 318J | COMCAST IP PHONE, LLC | CHESAPKECY | AS | 04/17/2014 | CHESAPEAKE CITY | MD | MA | 05/11/2014 | |
| 443-566-6XXX | 6395 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | CHESAPKECY | AS | 09/03/2008 | CHESAPEAKE CITY | MD | MA | 09/15/2008 | |
| 443-566-7XXX | 7325 | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | CHESAPKECY | AS | 09/24/2014 | CHESAPEAKE CITY | MD | MA | 10/23/2014 | |
| 443-566-8XXX | 073H | TELNYX LLC | CHESAPKECY | AS | 08/31/2017 | CHESAPEAKE CITY | MD | MA | 09/13/2017 | |
| 443-566-9XXX | 876D | ONVOY, LLC - MD | CHESAPKECY | AS | 02/05/2021 | CHESAPEAKE CITY | MD | MA | 03/05/2021 | |
| 443-566-XXXX | 6395 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | CHESAPKECY | AS | 09/16/2004 | CHESAPEAKE CITY | MD |
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