| npa-nxx | State | Company | FRN | RMD | OCN | Rate Center | CLLI | Assign Date | Misc |
| 405-376 | OK | SOUTHWESTERN BELL | N/A | 9533 | MUSTANG | MSTNOKMARS1 | 00/00/0000 | Prefix Type: RBOC Switch Name: MUSTANG Switch Type: WECO 5ESS (Digital) LATA: Oklahoma City OK (536) Tandem: OKCYOKCE13T Detailed Switch Info |
