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
2016-10-10	567-381	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OH	464C	LEXINGTON	OH
2016-10-10	602-782	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PHOENIX	AZ
2016-10-10	619-775	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	CORONADO	CA
2016-10-10	626-495	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	ALHAMBRA	CA
2016-10-10	661-227	0–9 XXXall 10 · 2 holders which blocks →	METROPCS NETWORKS, LLC	899D	PLDL PLDL	CA
2016-10-10	717-551	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	HARISBGZN1	PA
2016-10-10	740-850	0XXX1XXX2XXX6XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OH	464C	CENTERBURG	OH
2016-10-10	786-778	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2016-10-10	858-283	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	LA JOLLA	CA
2016-10-10	863-500	0–9 XXXall 10 · 5 holders which blocks →	MIX NETWORKS, INC.	856H	LAKELAND	FL
2016-10-10	909-679	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - CA	649C	COLTON	CA
2016-10-10	909-698	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	CRESTLINE	CA
2016-10-10	909-729	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	POMONA	CA
2016-10-10	909-760	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	DIAMONDBAR	CA
2016-10-10	909-765	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	MARSHALL	CA
2016-10-10	928-582	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PRESCOTT	AZ
2016-10-10	951-497	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	MORENO	CA
2016-10-07	236-475	not yet reported which blocks →	TELUS	8086	Victoria	—
2016-10-07	267-561	0–9 XXXwhole prefix which blocks →	PAETEC ITEL, LLC	829J	PHLDLPHZN1	PA
2016-10-07	407-627	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF FLORIDA, LLC - FL	902E	ORLANDO	FL
2016-10-07	509-405	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	KENNEWICK	WA
2016-10-07	518-902	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SCHENCTADY	NY
2016-10-07	518-903	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ALBANY	NY
2016-10-07	539-424	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OK	409F	TULSA	OK
2016-10-07	772-307	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	PTST LUCIE	FL
2016-10-07	831-257	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	APTOS	CA
2016-10-07	904-872	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	MIDDLEBURG	FL
2016-10-07	909-688	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	FONTANA	CA
2016-10-07	913-356	0–9 XXXall 10 · 4 holders which blocks →	EVERFAST FIBER NETWORKS LLC	3915	BONNER SPG	KS
2016-10-07	980-287	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - NC	8389	CHARLOTTE	NC
2016-10-06	205-905	0–9 XXXall 10 · 6 holders which blocks →	WIDE VOICE, LLC - AL	764H	BIRMINGHAM	AL
2016-10-06	346-774	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HSTNSUBURB	TX
2016-10-06	505-387	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	GALLUP	NM
2016-10-06	579-609	not yet reported which blocks →	Bell Canada	8050	St-Jean	—
2016-10-06	579-612	not yet reported which blocks →	Bell Canada	8050	St-Lambert	—
2016-10-06	579-613	not yet reported which blocks →	Bell Canada	8050	Ste-Therese	—
2016-10-06	579-614	not yet reported which blocks →	Bell Canada	8050	St-Sauveur	—
2016-10-06	579-615	not yet reported which blocks →	Bell Canada	8050	Terrebonne	—
2016-10-06	579-616	not yet reported which blocks →	Bell Canada	8050	Valleyfield	—
2016-10-06	579-617	not yet reported which blocks →	Bell Canada	8050	St-Jerome	—
2016-10-06	682-774	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GLENDALE	TX
2016-10-06	717-415	0–9 XXXall 10 · 4 holders which blocks →	D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE	6846	COLUMBIA	PA
2016-10-06	873-994	not yet reported which blocks →	TELUS Mobility	8303	Lebel-sur-Quevillon	—
2016-10-06	873-995	not yet reported which blocks →	TELUS Mobility	8303	Matagami	—
2016-10-05	202-902	0–9 XXXall 10 · 5 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	WSHNGTNZN1	DC
2016-10-05	240-540	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	WSNG238Z13	MD
2016-10-05	401-251	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	PORTSMOUTH	RI
2016-10-05	412-710	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	PTGSBNZN11	PA
2016-10-05	539-204	0–9 XXXall 10 · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK	7258	BRISTOW	OK
2016-10-05	587-869	not yet reported which blocks →	Comwave Networks	160G	Fort Saskatchewan	—

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.