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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-997MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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