TelcoData.US: Search by Area Code / Exchange

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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
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 is split into 1,000-number blocks - detail below
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))