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
720-721COTHE VOICE APPLICATION NETWORK, LLC507JDENVERDNVRCOMA37Z00/00/0000Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Denver CO (656)
Tandem: N/A
Detailed Switch Info
Thousands block for 720-721
720-721-1COTHE VOICE APPLICATION NETWORK, LLC507JDENVERDNVRCOMA37Z04/22/2016Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Denver CO (656)
Tandem: N/A
Detailed Switch Info