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
559-477CAPACIFIC BELL (AT&T)9740FRESNOFRSNCA01RS012/01/2003Prefix Type: RBOC
Switch Name: FRESNO
Switch Type: N/A
LATA: Fresno CA (728)
Tandem: N/A
Detailed Switch Info
Thousands block for 559-477
559-477-1CAPACIFIC BELL (AT&T)9740FRESNOFRSNCA01RS012/02/2003Prefix Type: RBOC
Switch Name: FRESNO
Switch Type: N/A
LATA: Fresno CA (728)
Tandem: N/A
Detailed Switch Info