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| npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
| 501-338 | AR | LEVEL 3 COMMUNICATIONS, LLC - AR (CenturyLink, Inc) | 5179 | BISMARCK | LTRKARWTBMD | 03/28/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Little Rock AR (528) Tandem: N/A Detailed Switch Info |
| Thousands block for 501-338 | |||||||
| 501-338-1 | AR | METROPCS, INC. (T-Mobile US, Inc) | 5562 | BISMARCK | NOCLLIKNOWN | 04/21/2021 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Little Rock AR (528) Tandem: N/A Detailed Switch Info |
| 501-338-2 | AR | LEVEL 3 COMMUNICATIONS, LLC - AR (CenturyLink, Inc) | 5179 | BISMARCK | LTRKARWTBMD | 03/28/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Little Rock AR (528) Tandem: N/A Detailed Switch Info |
| 501-865 | AR | CENTRAL ARKANSAS TEL. COOP., INC. | 1697 | BISMARCK | BSMRARXADS0 | 00/00/0000 | Prefix Type: ICO Switch Name: BISMARCK Switch Type: Stromberg Carlson DCO Digital LATA: Little Rock AR (528) Tandem: N/A Detailed Switch Info |