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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
541-399	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	09/04/2002	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))
541-399 is split into 1,000-number blocks - detail below
541-399-0XXX	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	07/03/2008	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))
541-399-1XXX	OR	T-MOBILE USA, INC. (T-Mobile US, Inc)	0017078262	RMD0019051	6529	HOOD RIVER	PTLDORUFCM1	09/08/2005	Prefix Type: PCS Switch Name: PORTLAND Switch Type: Cellular Mobile Carrier Switching System LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: PTLDORUFCM1))
541-399-2XXX	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	10/26/2004	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))
541-399-3XXX	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	08/05/2005	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))
541-399-4XXX	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	08/19/2009	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))
541-399-5XXX	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	12/21/2015	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))
541-399-6XXX	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	11/09/2006	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))
541-399-7XXX	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	09/13/2011	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))
541-399-8XXX	OR	PEERLESS NETWORK OF OREGON, LLC - OR		N/A	157F	HOOD RIVER	NOCLLIKNOWN	11/25/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
541-399-9XXX	OR	NEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)	0003291192	RMD0036909	6010	HOOD RIVER	THDLORQA2MD	12/10/2013	Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: THDLORQA2MD))