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
972-544TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS000/00/0000Prefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
Thousands block for 972-544
972-544-2TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS0N/APrefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
972-544-3TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS0N/APrefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
972-544-8TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS0N/APrefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
972-842TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS000/00/0000Prefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
Thousands block for 972-842
972-842-2TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS0N/APrefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
972-842-3TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS0N/APrefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
972-842-5TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS0N/APrefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info
972-842-8TXFRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications)2154FERRISFRRSTXXADS0N/APrefix Type: RBOC
Switch Name: FERRIS
Switch Type: SCRNS
LATA: Dallas TX (552)
Tandem: DLLSTXTA05T
Detailed Switch Info