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| Raw Number | 443753 |
| Basic Format | 443-753 |
| NPA (Area Code) | 443 |
| NXX | 753 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date |
|---|---|---|---|---|---|---|---|---|---|
| 443-753-0XXX | 7229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERLO236 | RT | WATERLOO 236 | MD | MA | ||
| 443-753-1XXX | 7229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERLO236 | RT | WATERLOO 236 | MD | MA | ||
| 443-753-2XXX | 7229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERLO236 | AS | 06/02/2014 | WATERLOO 236 | MD | MA | 06/12/2014 |
| 443-753-3XXX | 318J | COMCAST IP PHONE, LLC | WATERLO236 | AS | 01/09/2015 | WATERLOO 236 | MD | MA | 01/21/2015 |
| 443-753-4XXX | 7229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERLO236 | RT | WATERLOO 236 | MD | MA | ||
| 443-753-5XXX | 7229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERLO236 | RT | WATERLOO 236 | MD | MA | ||
| 443-753-6XXX | 7229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERLO236 | RT | WATERLOO 236 | MD | MA | ||
| 443-753-7XXX | 876D | ONVOY, LLC - MD | WATERLO236 | AS | 04/21/2021 | WATERLOO 236 | MD | MA | 05/21/2021 |
| 443-753-8XXX | 515J | IP HORIZON LLC | WATERLO236 | AS | 05/03/2016 | WATERLOO 236 | MD | MA | 05/31/2016 |
| 443-753-9XXX | 7229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERLO236 | RT | WATERLOO 236 | MD | MA | ||
| 443-753-XXXX | 7229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | WATERLO236 | AS | WATERLOO 236 | MD |
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