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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
630-252ILILLINOIS BELL TEL CO (AT&T)N/AN/A9329LEMONTLEMTILLNDS000/00/0000Prefix Type: RBOC
Switch Name: LEMONT NORTH
Switch Type: DMS100
LATA: N/A
Tandem: LBRDILLM20T
🔧 Explore Switch(CLLI: LEMTILLNDS0))
🕘 Prefix History
🔎 Explore Carrier Information
630-427ILILLINOIS BELL TEL CO (AT&T)N/AN/A9329DOWNERSGRVLEMTILLNDS000/00/0000Prefix Type: RBOC
Switch Name: LEMONT NORTH
Switch Type: DMS100
LATA: N/A
Tandem: LBRDILLM20T
🔧 Explore Switch(CLLI: LEMTILLNDS0))
🕘 Prefix History
🔎 Explore Carrier Information
630-739ILILLINOIS BELL TEL CO (AT&T)N/AN/A9329LEMONTLEMTILLNDS000/00/0000Prefix Type: RBOC
Switch Name: LEMONT NORTH
Switch Type: DMS100
LATA: N/A
Tandem: LBRDILLM20T
🔧 Explore Switch(CLLI: LEMTILLNDS0))
🕘 Prefix History
🔎 Explore Carrier Information
630-783ILILLINOIS BELL TEL CO (AT&T)N/AN/A9329LEMONTLEMTILLNDS000/00/0000Prefix Type: RBOC
Switch Name: LEMONT NORTH
Switch Type: DMS100
LATA: N/A
Tandem: LBRDILLM20T
🔧 Explore Switch(CLLI: LEMTILLNDS0))
🕘 Prefix History
🔎 Explore Carrier Information
630-910ILILLINOIS BELL TEL CO (AT&T)N/AN/A9329DOWNERSGRVLEMTILLNDS000/00/0000Prefix Type: RBOC
Switch Name: LEMONT NORTH
Switch Type: DMS100
LATA: N/A
Tandem: LBRDILLM20T
🔧 Explore Switch(CLLI: LEMTILLNDS0))
🕘 Prefix History
🔎 Explore Carrier Information
630-972ILILLINOIS BELL TEL CO (AT&T)N/AN/A9329LEMONTLEMTILLNDS000/00/0000Prefix Type: RBOC
Switch Name: LEMONT NORTH
Switch Type: DMS100
LATA: N/A
Tandem: LBRDILLM20T
🔧 Explore Switch(CLLI: LEMTILLNDS0))
🕘 Prefix History
🔎 Explore Carrier Information
630-985ILILLINOIS BELL TEL CO (AT&T)N/AN/A9329DOWNERSGRVLEMTILLNDS000/00/0000Prefix Type: RBOC
Switch Name: LEMONT NORTH
Switch Type: DMS100
LATA: N/A
Tandem: LBRDILLM20T
🔧 Explore Switch(CLLI: LEMTILLNDS0))
🕘 Prefix History
🔎 Explore Carrier Information
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