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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
956-421TXSOUTHWESTERN BELL9533HARLINGENHRLNTXHGDS000/00/0000Prefix Type: RBOC
Switch Name: Harlingen
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Brownsville TX (568)
Tandem: HRLNTXHG03T
Detailed Switch Info