npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
972-225 | TX | SOUTHWESTERN BELL | 9533 | DALLAS | DLLSTXHUDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: Hutchins Switch Type: WECO 5ESS (Digital) LATA: Dallas TX (552) Tandem: DLLSTXRI01T Detailed Switch Info |