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
989-823MIMICHIGAN BELL TEL CO (AT&T)N/A9323VASSARVSSRMIMNRSA00/00/0000Prefix Type: RBOC
Switch Name: VASSAR
Switch Type: N/A
LATA: Saginaw MI (344)
Tandem: SGNWMIFA20T
🔧 Explore Switch(CLLI: VSSRMIMNRSA))
989-823 is split into 1,000-number blocks - detail below
989-823-1XXXMIMICHIGAN BELL TEL CO (AT&T)N/A9323VASSARVSSRMIMNRSAN/APrefix Type: RBOC
Switch Name: VASSAR
Switch Type: N/A
LATA: Saginaw MI (344)
Tandem: SGNWMIFA20T
🔧 Explore Switch(CLLI: VSSRMIMNRSA))
989-823-2XXXMIMICHIGAN BELL TEL CO (AT&T)N/A9323VASSARVSSRMIMNRSAN/APrefix Type: RBOC
Switch Name: VASSAR
Switch Type: N/A
LATA: Saginaw MI (344)
Tandem: SGNWMIFA20T
🔧 Explore Switch(CLLI: VSSRMIMNRSA))
989-823-3XXXMIMICHIGAN BELL TEL CO (AT&T)N/A9323VASSARVSSRMIMNRSAN/APrefix Type: RBOC
Switch Name: VASSAR
Switch Type: N/A
LATA: Saginaw MI (344)
Tandem: SGNWMIFA20T
🔧 Explore Switch(CLLI: VSSRMIMNRSA))
989-823-7XXXMIMICHIGAN BELL TEL CO (AT&T)N/A9323VASSARVSSRMIMNRSAN/APrefix Type: RBOC
Switch Name: VASSAR
Switch Type: N/A
LATA: Saginaw MI (344)
Tandem: SGNWMIFA20T
🔧 Explore Switch(CLLI: VSSRMIMNRSA))
989-823-8XXXMIMICHIGAN BELL TEL CO (AT&T)N/A9323VASSARVSSRMIMNRSAN/APrefix Type: RBOC
Switch Name: VASSAR
Switch Type: N/A
LATA: Saginaw MI (344)
Tandem: SGNWMIFA20T
🔧 Explore Switch(CLLI: VSSRMIMNRSA))
989-823-9XXXMIMICHIGAN BELL TEL CO (AT&T)N/A9323VASSARVSSRMIMNRSAN/APrefix Type: RBOC
Switch Name: VASSAR
Switch Type: N/A
LATA: Saginaw MI (344)
Tandem: SGNWMIFA20T
🔧 Explore Switch(CLLI: VSSRMIMNRSA))