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| npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
| 406-219 | MT | AT&T - LOCAL (AT&T) | 7421 | BOZEMAN | BLNGMTMAIMD | 02/13/2003 | Prefix Type: CLEC Switch Name: BILLINGS Switch Type: N/A LATA: Billings MT (650) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-219 | |||||||
| 406-219-9 | MT | AT&T - LOCAL (AT&T) | 7421 | BOZEMAN | BLNGMTMAIMD | N/A | Prefix Type: CLEC Switch Name: BILLINGS Switch Type: N/A LATA: Billings MT (650) Tandem: N/A Detailed Switch Info |
| 406-221 | MT | AT&T - LOCAL (AT&T) | 7421 | BUTTE | HLNAMTMAKMD | 02/13/2003 | Prefix Type: CLEC Switch Name: HELENA Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-221 | |||||||
| 406-221-9 | MT | AT&T - LOCAL (AT&T) | 7421 | BUTTE | HLNAMTMAKMD | N/A | Prefix Type: CLEC Switch Name: HELENA Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| 406-274 | MT | AT&T - LOCAL (AT&T) | 7421 | MISSOULA | MSSLMTMAHMD | 00/00/0000 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-274 | |||||||
| 406-274-9 | MT | AT&T - LOCAL (AT&T) | 7421 | MISSOULA | MSSLMTMAHMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| 406-316 | MT | AT&T - LOCAL (AT&T) | 7421 | BOULDER | HLNAMTMAX0X | 07/12/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-316 | |||||||
| 406-316-9 | MT | AT&T - LOCAL (AT&T) | 7421 | BOULDER | HLNAMTMAX0X | 07/16/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| 406-419 | MT | AT&T - LOCAL (AT&T) | 7421 | VICTOR | MSSLMTMAHMD | 07/12/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-419 | |||||||
| 406-419-9 | MT | AT&T - LOCAL (AT&T) | 7421 | VICTOR | MSSLMTMAHMD | 07/16/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| 406-625 | MT | AT&T - LOCAL (AT&T) | 7421 | STEVENSVL | MSSLMT69PS0 | 00/00/0000 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-625 | |||||||
| 406-625-9 | MT | AT&T - LOCAL (AT&T) | 7421 | STEVENSVL | MSSLMT69PS0 | 01/19/2024 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| 406-634 | MT | AT&T - LOCAL (AT&T) | 7421 | HELENA | HLNAMTMAX0X | 00/00/0000 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-634 | |||||||
| 406-634-9 | MT | AT&T - LOCAL (AT&T) | 7421 | HELENA | HLNAMTMAX0X | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Great Falls MT (648) Tandem: N/A Detailed Switch Info |
| 406-815 | MT | AT&T - LOCAL (AT&T) | 7421 | RED LODGE | BLNGMTMAX5X | 00/00/0000 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-815 | |||||||
| 406-815-9 | MT | AT&T - LOCAL (AT&T) | 7421 | RED LODGE | BLNGMTMAX5X | 01/24/2022 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A Detailed Switch Info |
| 406-997 | MT | AT&T - LOCAL (AT&T) | 7421 | FROMBERG | NOCLLIKNOWN | 01/24/2024 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A Detailed Switch Info |
| Thousands block for 406-997 | |||||||
| 406-997-9 | MT | AT&T - LOCAL (AT&T) | 7421 | FROMBERG | NOCLLIKNOWN | 01/24/2024 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Billings MT (650) Tandem: N/A Detailed Switch Info |