Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 19

New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2016-03-09	518-616	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	ALBANY	NY
2016-03-09	518-666	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	STREGISFLS	NY
2016-03-09	518-990	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	MOIRA	NY
2016-03-09	520-585	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	TUCSON	AZ
2016-03-09	551-203	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	JERSEYCITY	NJ
2016-03-09	585-304	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	OAKFIELD	NY
2016-03-09	609-783	0–9 XXXall 10 · 7 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	ATLNTIC CY	NJ
2016-03-09	623-226	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2016-03-09	639-741	not yet reported which blocks →	Bell Mobility	6574	Big River	—
2016-03-09	639-742	not yet reported which blocks →	Bell Mobility	6574	Melfort	—
2016-03-09	639-743	not yet reported which blocks →	Bell Mobility	6574	La Ronge	—
2016-03-09	639-744	not yet reported which blocks →	Bell Mobility	6574	Carrot River	—
2016-03-09	639-745	not yet reported which blocks →	Bell Mobility	6574	Hudson Bay	—
2016-03-09	639-746	not yet reported which blocks →	Bell Mobility	6574	Nipawin	—
2016-03-09	639-747	not yet reported which blocks →	Bell Mobility	6574	Shellbrook	—
2016-03-09	639-748	not yet reported which blocks →	Bell Mobility	6574	Spiritwood	—
2016-03-09	639-749	not yet reported which blocks →	Bell Mobility	6574	Tisdale	—
2016-03-09	662-920	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MS	719E	CRENSHAW	MS
2016-03-09	669-203	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	CAMPBELL	CA
2016-03-09	707-610	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	CLOVERDALE	CA
2016-03-09	716-321	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	SO DAYTON	NY
2016-03-09	716-641	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	MACHIAS	NY
2016-03-09	774-335	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - MA	892D	MILLIS	MA
2016-03-09	774-347	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MA	892D	NOBROOKFLD	MA
2016-03-09	774-484	0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MA	892D	BELLINGHAM	MA
2016-03-09	774-561	0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - MA	892D	ORLEANS	MA
2016-03-09	862-774	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - NJ	637C	POMPTONLKS	NJ
2016-03-09	864-713	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - SC	548E	HONEA PATH	SC
2016-03-09	864-732	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	SALEM	SC
2016-03-09	864-740	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	PIEDMONT	SC
2016-03-09	970-659	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	HILLROSE	CO
2016-03-08	205-666	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AL	604E	BIRMINGHAM	AL
2016-03-08	205-997	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BESSEMER	AL
2016-03-08	206-401	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	RICHMNDBCH	WA
2016-03-08	224-263	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC	224C	HUNTLEY	IL
2016-03-08	262-205	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - WI	225C	WILLIAMSBY	WI
2016-03-08	318-409	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - LA	749E	MARKSVILLE	LA
2016-03-08	336-660	0–9 XXXall 10 · 4 holders which blocks →	RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC	769H	GREENSBORO	NC
2016-03-08	361-417	7XXX which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CONCEPCION	TX
2016-03-08	365-529	not yet reported which blocks →	Distributel	082E	Queensville	—
2016-03-08	405-594	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OK	409F	OKLA CITY	OK
2016-03-08	430-303	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TX	903C	COMMERCE	TX
2016-03-08	505-308	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NM	206F	ALBUQURQUE	NM
2016-03-08	509-890	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF WASHINGTON, LLC - WA	159F	DEER PARK	WA
2016-03-08	517-201	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLCV - MI	543C	LESLIE	MI
2016-03-08	517-210	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	POTTERVL	MI
2016-03-08	639-361	not yet reported which blocks →	Bell Mobility	6574	Assiniboia	—
2016-03-08	639-362	not yet reported which blocks →	Bell Mobility	6574	Davidson	—
2016-03-08	639-363	not yet reported which blocks →	Bell Mobility	6574	Grenfell	—
2016-03-08	639-364	not yet reported which blocks →	Bell Mobility	6574	Indian Head	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.