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
231-242MIMICHIGAN BELL TEL CO (AT&T)9323HARBOR SPGHRSPMIMNRSA00/00/0000Prefix Type: RBOC
Switch Name: HARBOR SPRINGS
Switch Type: N/A
LATA: Grand Rapids MI (348)
Tandem: TRCYMIMN20T
Detailed Switch Info
Thousands block for 231-242
231-242-0MIMICHIGAN BELL TEL CO (AT&T)9323HARBOR SPGHRSPMIMNRSAN/APrefix Type: RBOC
Switch Name: HARBOR SPRINGS
Switch Type: N/A
LATA: Grand Rapids MI (348)
Tandem: TRCYMIMN20T
Detailed Switch Info
231-242-1MIMICHIGAN BELL TEL CO (AT&T)9323HARBOR SPGHRSPMIMNRSAN/APrefix Type: RBOC
Switch Name: HARBOR SPRINGS
Switch Type: N/A
LATA: Grand Rapids MI (348)
Tandem: TRCYMIMN20T
Detailed Switch Info
231-526MIMICHIGAN BELL TEL CO (AT&T)9323HARBOR SPGHRSPMIMNRSA00/00/0000Prefix Type: RBOC
Switch Name: HARBOR SPRINGS
Switch Type: N/A
LATA: Grand Rapids MI (348)
Tandem: TRCYMIMN20T
Detailed Switch Info