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| npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
| 704-546 | NC | YADKIN VALLEY TEL. MEMBERSHIP CORP. | 0511 | HARMONY | HRMYNCXARS0 | 00/00/0000 | Prefix Type: ICO Switch Name: HARMONY Switch Type: N/A LATA: Charlotte NC (422) Tandem: N/A Detailed Switch Info |
| 980-379 | NC | TIME WARNER CBL INFO SVC (NC) DBA TIME WARNER CBL | 580C | HARMONY | CHRLNCBOXPY | 10/28/2008 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charlotte NC (422) Tandem: N/A Detailed Switch Info |
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| 980-379-0 | NC | TIME WARNER CBL INFO SVC (NC) DBA TIME WARNER CBL | 580C | HARMONY | CHRLNCBOXPY | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charlotte NC (422) Tandem: N/A Detailed Switch Info |
| 980-698 | NC | TIME WARNER CBL INFO SVC (NC) DBA TIME WARNER CBL | 580C | HARMONY | CHRLNCBOXPY | 03/06/2013 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charlotte NC (422) Tandem: N/A Detailed Switch Info |
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| 980-698-6 | NC | TELEPORT COMMUNICATIONS AMERICA, LLC - NC (AT&T) | 8389 | HARMONY | NOCLLIKNOWN | 08/17/2023 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charlotte NC (422) Tandem: N/A Detailed Switch Info |
| 980-698-9 | NC | TIME WARNER CBL INFO SVC (NC) DBA TIME WARNER CBL | 580C | HARMONY | CHRLNCBOXPY | 03/07/2013 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Charlotte NC (422) Tandem: N/A Detailed Switch Info |