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
510-374CAPACIFIC BELL (AT&T)9740RICHMONDRCMDCA11RS200/00/0000Prefix Type: RBOC
Switch Name: RICHMOND
Switch Type: Northern Telecom Remote Switching Center
LATA: San Francisco CA (722)
Tandem: N/A
Detailed Switch Info
Thousands block for 510-374
510-374-1CAPACIFIC BELL (AT&T)9740RICHMONDRCMDCA11RS2N/APrefix Type: RBOC
Switch Name: RICHMOND
Switch Type: Northern Telecom Remote Switching Center
LATA: San Francisco CA (722)
Tandem: N/A
Detailed Switch Info
510-374-3CAPACIFIC BELL (AT&T)9740RICHMONDRCMDCA11RS2N/APrefix Type: RBOC
Switch Name: RICHMOND
Switch Type: Northern Telecom Remote Switching Center
LATA: San Francisco CA (722)
Tandem: N/A
Detailed Switch Info
510-374-7CAPACIFIC BELL (AT&T)9740RICHMONDRCMDCA11RS2N/APrefix Type: RBOC
Switch Name: RICHMOND
Switch Type: Northern Telecom Remote Switching Center
LATA: San Francisco CA (722)
Tandem: N/A
Detailed Switch Info