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
406-417MTNEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010HELENAMSSLMTMA4MD05/28/2008Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Great Falls MT (648)
Tandem: N/A
🔧 Explore Switch(CLLI: MSSLMTMA4MD))
🕘 Prefix History
🔎 Explore Carrier Information
406-417 is split into 1,000-number blocks - detail below
406-417-0XXXMTNEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010HELENAMSSLMTMA4MD05/29/2008Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Great Falls MT (648)
Tandem: N/A
🔧 Explore Switch(CLLI: MSSLMTMA4MD))
🕘 Prefix History
🔎 Explore Carrier Information
406-417-4XXXMTNEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010HELENAMSSLMTMA4MD10/31/2024Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Great Falls MT (648)
Tandem: N/A
🔧 Explore Switch(CLLI: MSSLMTMA4MD))
🕘 Prefix History
🔎 Explore Carrier Information
406-417-5XXXMTNEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010HELENAMSSLMTMA4MD10/23/2023Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Great Falls MT (648)
Tandem: N/A
🔧 Explore Switch(CLLI: MSSLMTMA4MD))
🕘 Prefix History
🔎 Explore Carrier Information
406-417-8XXXMTNEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010HELENAMSSLMTMA4MD02/25/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Great Falls MT (648)
Tandem: N/A
🔧 Explore Switch(CLLI: MSSLMTMA4MD))
🕘 Prefix History
🔎 Explore Carrier Information
406-417-9XXXMTNEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010HELENAMSSLMTMA4MD12/12/2019Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Great Falls MT (648)
Tandem: N/A
🔧 Explore Switch(CLLI: MSSLMTMA4MD))
🕘 Prefix History
🔎 Explore Carrier Information
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