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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
443-518MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/16/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-518
443-518-0MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036COLUMBIACLMAMDORGT003/23/2009Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-6MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036COLUMBIACLMAMDORGT003/23/2009Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-7MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229COLUMBIABLTMMDCDDS003/09/2010Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-8MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036COLUMBIACLMAMDORGT003/17/2010Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-9MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036COLUMBIACLMAMDORGT003/23/2009Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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