Input an Area Code (required) followed by the Prefix, or Exchange (optional):
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npa-nxxState/ProvinceCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
301-820MDTELEPORT COMMUNICATIONS AMERICA, LLC - DC (AT&T)0004274114RMD00038977529GAITHERSBGWASHDCTTDS000/00/0000Prefix Type: CLEC
Switch Name: WASHINGTON
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: N/A
Tandem: N/A
Detailed Switch Info
Thousands block for 301-820
301-820-0MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036GAITHERSBGBTVLMD18G0001/24/2012Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-1MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036GAITHERSBGBTVLMD18G0001/24/2012Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-2MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036GAITHERSBGBTVLMD18G0009/01/2010Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-3MDPAETEC ITEL, LLCN/A829JGAITHERSBGHRNDVA13AMD05/17/2011Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-4MDTELEPORT COMMUNICATIONS AMERICA, LLC - DC (AT&T)0004274114RMD00038977529GAITHERSBGWASHDCTTDS0N/APrefix Type: CLEC
Switch Name: WASHINGTON
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-5MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036GAITHERSBGBTVLMD18G0010/19/2009Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-6MDTELEPORT COMMUNICATIONS AMERICA, LLC - DC (AT&T)0004274114RMD00038977529GAITHERSBGWASHDCTTDS0N/APrefix Type: CLEC
Switch Name: WASHINGTON
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-7MDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DGAITHERSBGNOCLLIKNOWN06/07/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-8MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036GAITHERSBGBTVLMD18G0001/24/2012Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
Detailed Switch Info
301-820-9MDONVOY SPECTRUM, LLC (Sinch)0024415002RMD0002045624HGAITHERSBGNOCLLIKNOWN12/08/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
Detailed Switch Info
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