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
Thousands block for 312-981
312-981-6ILILLINOIS BELL TEL CO (AT&T)9329CHICGOZN01CHCGILSUDS104/21/2000Prefix Type: RBOC
Switch Name: CHCG SUPERIOR DS1
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: CHCGILID71T
Detailed Switch Info
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