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npa-nxxState/ProvinceCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
720-356COTELEPORT COMMUNICATIONS AMERICA, LLC - CO (AT&T)0004274114RMD00038977378DENVERDNVRCOMADS800/00/0000Prefix Type: CLEC
Switch Name: DENVER
Switch Type: WECO 4ESS
LATA: Denver CO (656)
Tandem: N/A
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720-356 is split into 1,000-number blocks - detail below
720-356-0XXXCOONVOY, LLC - CO (Sinch)0004323028RMD0001966026DDENVERNOCLLIKNOWN05/22/2009Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Denver CO (656)
Tandem: N/A
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720-356-1XXXCOPAETEC ITEL, LLC0015247810RMD0038378829JDENVERDNVTCOUZ0MD10/31/2008Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Denver CO (656)
Tandem: N/A
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720-356-2XXXCOT-MOBILE USA, INC. (T-Mobile US, Inc)0017078262RMD00190516529DENVERDNVRCOII3MD10/06/2009Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Denver CO (656)
Tandem: N/A
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720-356-3XXXCONEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010DENVERDNVRCOMDCM702/20/2025Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Denver CO (656)
Tandem: N/A
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720-356-4XXXCOCENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)0031422439RMD0006976508JDENVERHLRNCOFP1MD07/06/2017Prefix Type: IPES
Switch Name: DENVER
Switch Type: N/A
LATA: Denver CO (656)
Tandem: N/A
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720-356-5XXXCONEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010DENVERDNVRCOMDCM702/20/2025Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Denver CO (656)
Tandem: N/A
🔧 Explore Switch(CLLI: DNVRCOMDCM7))
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720-356-6XXXCOTELEPORT COMMUNICATIONS AMERICA, LLC - CO (AT&T)0004274114RMD00038977378DENVERDNVRCOMADS8N/APrefix Type: CLEC
Switch Name: DENVER
Switch Type: WECO 4ESS
LATA: Denver CO (656)
Tandem: N/A
🔧 Explore Switch(CLLI: DNVRCOMADS8))
🕘 Prefix History
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720-356-7XXXCOTELEPORT COMMUNICATIONS AMERICA, LLC - CO (AT&T)0004274114RMD00038977378DENVERDNVRCOMADS8N/APrefix Type: CLEC
Switch Name: DENVER
Switch Type: WECO 4ESS
LATA: Denver CO (656)
Tandem: N/A
🔧 Explore Switch(CLLI: DNVRCOMADS8))
🕘 Prefix History
🔎 Explore Carrier Information
720-356-8XXXCOTELEPORT COMMUNICATIONS AMERICA, LLC - CO (AT&T)0004274114RMD00038977378DENVERDNVRCOMADS8N/APrefix Type: CLEC
Switch Name: DENVER
Switch Type: WECO 4ESS
LATA: Denver CO (656)
Tandem: N/A
🔧 Explore Switch(CLLI: DNVRCOMADS8))
🕘 Prefix History
🔎 Explore Carrier Information
720-356-9XXXCOTELEPORT COMMUNICATIONS AMERICA, LLC - CO (AT&T)0004274114RMD00038977378DENVERDNVRCOMADS8N/APrefix Type: CLEC
Switch Name: DENVER
Switch Type: WECO 4ESS
LATA: Denver CO (656)
Tandem: N/A
🔧 Explore Switch(CLLI: DNVRCOMADS8))
🕘 Prefix History
🔎 Explore Carrier Information
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