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
870-878ARSOUTHWESTERN BELL9533BLACK ROCKBLRKARMARS200/00/0000Prefix Type: RBOC
Switch Name: BLACK ROCK
Switch Type: Northern Telecom DMS100 Remote Line Module
LATA: Little Rock AR (528)
Tandem: JNBOARMA02T
Detailed Switch Info
Thousands block for 870-878
870-878-6ARSOUTHWESTERN BELL9533BLACK ROCKBLRKARMARS2N/APrefix Type: RBOC
Switch Name: BLACK ROCK
Switch Type: Northern Telecom DMS100 Remote Line Module
LATA: Little Rock AR (528)
Tandem: JNBOARMA02T
Detailed Switch Info