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npa-nxx	State/Province	Company	FRN	RMD	OCN	Rate Center	CLLI	Assign Date	Misc
541-454	OR	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR (Lumen Technologies, Inc)		N/A	4520	ARLINGTON	ARTNORXARS0	00/00/0000	Prefix Type: ICO Switch Name: ARLINGTON Switch Type: Northern Telecom Remote Switching Center LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: ARTNORXARS0))
541-454 is split into 1,000-number blocks - detail below
541-454-0XXX	OR	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR (Lumen Technologies, Inc)		N/A	4520	ARLINGTON	ARTNORXARS0	N/A	Prefix Type: ICO Switch Name: ARLINGTON Switch Type: Northern Telecom Remote Switching Center LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: ARTNORXARS0 ))
541-454-1XXX	OR	ONVOY, LLC - OR (Sinch)	0004323028	RMD0001966	750E	ARLINGTON	NOCLLIKNOWN	03/08/2021	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
541-454-2XXX	OR	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR (Lumen Technologies, Inc)		N/A	4520	ARLINGTON	ARTNORXARS0	N/A	Prefix Type: ICO Switch Name: ARLINGTON Switch Type: Northern Telecom Remote Switching Center LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: ARTNORXARS0 ))
541-454-3XXX	OR	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR (Lumen Technologies, Inc)		N/A	4520	ARLINGTON	ARTNORXARS0	N/A	Prefix Type: ICO Switch Name: ARLINGTON Switch Type: Northern Telecom Remote Switching Center LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: ARTNORXARS0 ))
541-454-4XXX	OR	LEVEL 3 COMMUNICATIONS, LLC - OR (Lumen Technologies, Inc)		N/A	3234	ARLINGTON	NOCLLIKNOWN	02/06/2023	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
541-454-5XXX	OR	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR (Lumen Technologies, Inc)		N/A	4520	ARLINGTON	ARTNORXARS0	N/A	Prefix Type: ICO Switch Name: ARLINGTON Switch Type: Northern Telecom Remote Switching Center LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: ARTNORXARS0 ))
541-454-6XXX	OR	UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR (Lumen Technologies, Inc)		N/A	4520	ARLINGTON	ARTNORXARS0	N/A	Prefix Type: ICO Switch Name: ARLINGTON Switch Type: Northern Telecom Remote Switching Center LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: ARTNORXARS0 ))
541-454-7XXX	OR	TELEPORT COMMUNICATIONS AMERICA, LLC - OR (AT&T)	0004274114	RMD0003897	7531	ARLINGTON	NOCLLIKNOWN	05/08/2013	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
541-454-8XXX	OR	CENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)	0031422439	RMD0006976	508J	ARLINGTON	NOCLLIKNOWN	11/14/2013	Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))
541-454-9XXX	OR	ONVOY, LLC - OR (Sinch)	0004323028	RMD0001966	750E	ARLINGTON	NOCLLIKNOWN	10/04/2018	Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Portland OR (672) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN))