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npa-nxxState/ProvinceCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
443-518MDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212COLUMBIACLMAMDCBRP012/16/2008Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDCBRP0))
443-518 is split into 1,000-number blocks - detail below
443-518-0XXXMDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036COLUMBIACLMAMDORGT003/23/2009Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDORGT0))
443-518-1XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212COLUMBIACLMAMDCBRP012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDCBRP0))
443-518-2XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212COLUMBIACLMAMDCBRP012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDCBRP0))
443-518-3XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212COLUMBIACLMAMDCBRP012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDCBRP0))
443-518-4XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212COLUMBIACLMAMDCBRP012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDCBRP0))
443-518-5XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212COLUMBIACLMAMDCBRP012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDCBRP0))
443-518-6XXXMDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036COLUMBIACLMAMDORGT003/23/2009Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDORGT0))
443-518-7XXXMDMCIMETRO ACCESS TRANSMISSION SERVICES LLC0004999405RMD00029577229COLUMBIAWASKDCFNPS003/09/2010Prefix Type: CLEC
Switch Name: WASHINGTON
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: WASKDCFNPS0))
443-518-8XXXMDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036COLUMBIACLMAMDORGT003/17/2010Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDORGT0))
443-518-9XXXMDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036COLUMBIACLMAMDORGT003/23/2009Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDORGT0))
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