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
630-218ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-368ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-472ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-537ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS006/28/2010Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
Thousands block for 630-537
630-537-2ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS007/02/2010Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-537-3ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS007/02/2010Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-537-4ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS007/02/2010Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-537-5ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS007/02/2010Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-537-6ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS007/02/2010Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-571ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-572ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-573ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
Thousands block for 630-574
630-574-0ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574-1ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574-2ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574-3ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574-4ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574-5ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574-7ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574-8ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-574-9ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-575ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
Thousands block for 630-586
630-586-0ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586-1ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586-2ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586-3ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586-4ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586-5ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586-6ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586-8ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-586-9ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
Thousands block for 630-623
630-623-0ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-1ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-2ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-3ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-4ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-5ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-6ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-7ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-8ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-623-9ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-645ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-684ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-706ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
Thousands block for 630-706
630-706-2ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-706-3ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS005/24/2000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-706-4ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS006/16/2000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-706-5ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS007/24/2000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-722ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
Thousands block for 630-891
630-891-4ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS011/15/1999Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-891-5ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS009/16/1999Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-891-6ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS009/16/1999Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-891-7ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS002/14/2000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-928ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
Thousands block for 630-954
630-954-0ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954-1ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954-2ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954-3ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954-4ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954-5ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954-6ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954-7ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-954-8ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS0N/APrefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
630-990ILILLINOIS BELL TEL CO (AT&T)9329HINSDALEOKBRILOADS000/00/0000Prefix Type: RBOC
Switch Name: OAKBROOK
Switch Type: 5ESS
LATA: Chicago IL METRO (358)
Tandem: LBRDILLM20T
Detailed Switch Info
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