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
509-580	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	SELAH	MLWDWAAA3MD	02/25/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-580 is split into 1,000-number blocks - detail below
509-580-0XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	SELAH	MLWDWAAA3MD	02/25/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-580-1XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	SELAH	MLWDWAAA3MD	10/14/2014	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-580-2XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	SELAH	MLWDWAAA3MD	06/27/2025	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))
509-580-4XXX	WA	LEVEL 3 COMMUNICATIONS, LLC - WA (Lumen Technologies, Inc)	0015338122	RMD0006112	6121	SELAH	NOCLLIKNOWN	12/01/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
509-580-6XXX	WA	TELEPORT COMMUNICATIONS AMERICA, LLC - WA (AT&T)	0004274114	RMD0003897	7146	SELAH	NOCLLIKNOWN	12/23/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
509-580-7XXX	WA	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	SELAH	NOCLLIKNOWN	04/28/2016	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
509-580-9XXX	WA	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	SELAH	MLWDWAAA3MD	06/29/2016	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A 🔧 Explore Switch(CLLI: MLWDWAAA3MD))