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Last Updated: Sat May 23 03:58:41 2026
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| 410-504 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 0002166825 | RMD0002941 | 9212 | PIKESVILLE | OWMLMDOMDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: OWINGS MILLS Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: OWMLMDOMDS0)) |
| 410-504-0XXX | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 0002166825 | RMD0002941 | 9212 | PIKESVILLE | OWMLMDOMDS0 | N/A | Prefix Type: RBOC Switch Name: OWINGS MILLS Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: OWMLMDOMDS0)) |
| 410-504-1XXX | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc) | 0015338122 | RMD0006112 | 6119 | PIKESVILLE | NOCLLIKNOWN | 09/27/2005 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 410-504-2XXX | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 0003291192 | RMD0036909 | 4036 | PIKESVILLE | CLMAMDORGT0 | 03/09/2005 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: CLMAMDORGT0)) |
| 410-504-3XXX | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 0003291192 | RMD0036909 | 4036 | PIKESVILLE | CLMAMDORGT0 | 03/09/2005 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: CLMAMDORGT0)) |
| 410-504-4XXX | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 0003291192 | RMD0036909 | 4036 | PIKESVILLE | CLMAMDORGT0 | 03/09/2005 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: CLMAMDORGT0)) |
| 410-504-5XXX | MD | COMCAST IP PHONE, LLC (Comcast) | 0008497687 | RMD0003552 | 318J | PIKESVILLE | BLTMMDCHXFX | 06/30/2005 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: BLTMMDCHXFX)) |
| 410-504-6XXX | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc) | 0015338122 | RMD0006112 | 6119 | PIKESVILLE | NOCLLIKNOWN | 09/27/2005 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 410-504-7XXX | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 0003291192 | RMD0036909 | 4036 | PIKESVILLE | CLMAMDORGT0 | 02/22/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: CLMAMDORGT0)) |
| 410-504-8XXX | MD | COMCAST IP PHONE, LLC (Comcast) | 0008497687 | RMD0003552 | 318J | PIKESVILLE | BLTMMDCHXFX | N/A | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: BLTMMDCHXFX)) |
| 410-504-9XXX | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 0003291192 | RMD0036909 | 4036 | PIKESVILLE | CLMAMDORGT0 | 04/30/2007 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A 🔧 Explore Switch(CLLI: CLMAMDORGT0)) |