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
217-536ILCITIZENS TELECOM CO ILLINOIS-F (Frontier Communications)1183WATSONWTSNILXCDS000/00/0000Prefix Type: ICO
Switch Name: WATSON
Switch Type: N/A
LATA: Mattoon IL (976)
Tandem: N/A
Detailed Switch Info
Thousands block for 217-536
217-536-0ILCITIZENS TELECOM CO ILLINOIS-F (Frontier Communications)1183WATSONWTSNILXCDS0N/APrefix Type: ICO
Switch Name: WATSON
Switch Type: N/A
LATA: Mattoon IL (976)
Tandem: N/A
Detailed Switch Info
217-536-1ILCITIZENS TELECOM CO ILLINOIS-F (Frontier Communications)1183WATSONWTSNILXCDS0N/APrefix Type: ICO
Switch Name: WATSON
Switch Type: N/A
LATA: Mattoon IL (976)
Tandem: N/A
Detailed Switch Info
217-536-5ILCITIZENS TELECOM CO ILLINOIS-F (Frontier Communications)1183WATSONWTSNILXCDS0N/APrefix Type: ICO
Switch Name: WATSON
Switch Type: N/A
LATA: Mattoon IL (976)
Tandem: N/A
Detailed Switch Info
217-536-6ILCITIZENS TELECOM CO ILLINOIS-F (Frontier Communications)1183WATSONWTSNILXCDS0N/APrefix Type: ICO
Switch Name: WATSON
Switch Type: N/A
LATA: Mattoon IL (976)
Tandem: N/A
Detailed Switch Info
217-536-8ILCITIZENS TELECOM CO ILLINOIS-F (Frontier Communications)1183WATSONWTSNILXCDS0N/APrefix Type: ICO
Switch Name: WATSON
Switch Type: N/A
LATA: Mattoon IL (976)
Tandem: N/A
Detailed Switch Info
217-536-9ILCITIZENS TELECOM CO ILLINOIS-F (Frontier Communications)1183WATSONWTSNILXCDS0N/APrefix Type: ICO
Switch Name: WATSON
Switch Type: N/A
LATA: Mattoon IL (976)
Tandem: N/A
Detailed Switch Info
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