Input a CLLI:

Tip: A Partial CLLI can be entered, but must contain a minimum of the first 6 characters. I.E. 'DLLSTX'

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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
972-752TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154BLUE RIDGEBLRGTXXARS000/00/0000Prefix Type: RBOC
Switch Name: BLUE RIDGE
Switch Type: NTDMSRLC
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
Thousands block for 972-752
972-752-4TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154BLUE RIDGEBLRGTXXARS0N/APrefix Type: RBOC
Switch Name: BLUE RIDGE
Switch Type: NTDMSRLC
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
972-752-5TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154BLUE RIDGEBLRGTXXARS0N/APrefix Type: RBOC
Switch Name: BLUE RIDGE
Switch Type: NTDMSRLC
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
972-752-9TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154BLUE RIDGEBLRGTXXARS0N/APrefix Type: RBOC
Switch Name: BLUE RIDGE
Switch Type: NTDMSRLC
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
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