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
231-527MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS000/00/0000Prefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info
Thousands block for 231-527
231-527-0MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS0N/APrefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info
231-527-1MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS0N/APrefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info
231-527-2MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS0N/APrefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info
231-527-3MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS0N/APrefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info
231-527-6MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS0N/APrefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info
231-591MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS000/00/0000Prefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info
231-592MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS000/00/0000Prefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info
231-796MIMICHIGAN BELL TEL CO (AT&T)9323BIG RAPIDSBGRPMIMNDS000/00/0000Prefix Type: RBOC
Switch Name: BIG RAPIDS
Switch Type: DMS100
LATA: Grand Rapids MI (348)
Tandem: GDRPMIBL21T
Detailed Switch Info