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
847-222ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS000/00/0000Prefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
Thousands block for 847-222
847-222-0ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-222-1ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-222-2ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-222-4ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-222-5ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-222-6ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-222-7ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-222-8ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-222-9ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS0N/APrefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
Thousands block for 847-481
847-481-2ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS009/24/1999Prefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-481-3ILT-MOBILE USA, INC. (T-Mobile US, Inc)6529ARLIGTNHTSARLHILAHDS008/14/2024Prefix Type: PCS
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-481-4ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS009/17/1999Prefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
847-481-7ILILLINOIS BELL TEL CO (AT&T)9329ARLIGTNHTSARLHILAHDS010/12/1998Prefix Type: RBOC
Switch Name: ARLINGTON HEIGHTS DS0
Switch Type: DMS100
LATA: Chicago IL METRO (358)
Tandem: NCHCILNC20T
Detailed Switch Info
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