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
217-635ILILLINOIS BELL TEL CO (AT&T)9329OAKFORDOKFRILOFRS000/00/0000Prefix Type: RBOC
Switch Name: OAKFORD
Switch Type: N/A
LATA: Springfield IL (374)
Tandem: SPFDILES52T
Detailed Switch Info
Thousands block for 217-635
217-635-5ILILLINOIS BELL TEL CO (AT&T)9329OAKFORDOKFRILOFRS0N/APrefix Type: RBOC
Switch Name: OAKFORD
Switch Type: N/A
LATA: Springfield IL (374)
Tandem: SPFDILES52T
Detailed Switch Info