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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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🔎 Tip: Click any Company, OCN, Rate Center, or CLLI to explore related telecom data

npa-nxxStateCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
630-231ILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS000/00/0000Prefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0))
630-293ILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS000/00/0000Prefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0))
630-562ILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS000/00/0000Prefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0))
630-562 is split into 1,000-number blocks - detail below
630-562-0XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-562-1XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-562-2XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-562-3XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-562-4XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-562-5XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-562-7XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-562-8XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-562-9XXXILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS0 N/APrefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0 ))
630-876ILILLINOIS BELL TEL CO (AT&T)N/A9329W CHICAGOWCHCILWCDS000/00/0000Prefix Type: RBOC
Switch Name: WEST CHICAGO
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
🔧 Explore Switch(CLLI: WCHCILWCDS0))
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