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
2016-02-29	908-424	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PLAINFIELD	NJ
2016-02-29	928-663	0XXX1XXX8XXX9XXX · 3 holders which blocks →	WAVENATION, LLC	700J	CHINLE	AZ
2016-02-29	980-240	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	CHARLOTTE	NC
2016-02-26	226-805	not yet reported which blocks →	Iristel Inc.	154E	Windsor	—
2016-02-26	249-701	not yet reported which blocks →	Iristel Inc.	154E	Parry Sound	—
2016-02-26	254-271	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - TX	903C	EASTLAND	TX
2016-02-26	361-977	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - TX	903C	PORTLDGGRY	TX
2016-02-26	442-301	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC - CA	649C	JUNE LAKE	CA
2016-02-26	513-466	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OH	464C	MASON	OH
2016-02-26	562-210	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	NORWALK	CA
2016-02-26	586-240	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-02-26	586-396	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-02-26	586-483	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-02-26	586-527	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-02-26	586-550	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	WARREN	MI
2016-02-26	586-559	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	WARREN	MI
2016-02-26	586-628	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	WARREN	MI
2016-02-26	586-676	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-02-26	586-695	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-02-26	586-922	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	WARREN	MI
2016-02-26	603-901	0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH	7778	CONWAY	NH
2016-02-26	609-201	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NJ	637C	ALLENTOWN	NJ
2016-02-26	614-587	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX which blocks →	ONVOY, LLC - OH	464C	CANALWHSTR	OH
2016-02-26	629-205	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TN	525E	FAIRVIEW	TN
2016-02-26	657-302	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WESTMINSTR	CA
2016-02-26	671-683	not yet reported which blocks →	GUAM WIRELESS TELEPHONE COMPANY, LLC	3945	AGANA	GU
2016-02-26	747-206	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	NORTHRIDGE	CA
2016-02-26	774-556	1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	MARLBORO	MA
2016-02-26	774-778	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	METROPCS, INC.	5562	WORCESTER	MA
2016-02-26	803-859	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	GRANITEVL	SC
2016-02-26	857-280	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MA	892D	BRIGHTON	MA
2016-02-26	858-276	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNDG LVTA	CA
2016-02-26	902-901	not yet reported which blocks →	Iristel Inc.	154E	Windsor	—
2016-02-26	978-350	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MA	892D	TEMPLETON	MA
2016-02-25	231-707	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLCV - MI	543C	NEWAYGO	MI
2016-02-25	321-830	0–9 XXXall 10 · 3 holders which blocks →	SMART CITY SOLUTIONS II, LLC DBA SMART CITY METRO	8105	COCOA	FL
2016-02-25	321-831	0–9 XXXall 10 · 3 holders which blocks →	SMART CITY SOLUTIONS II, LLC DBA SMART CITY METRO	8105	MELBOURNE	FL
2016-02-25	502-206	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - KY	896E	GHENT	KY
2016-02-25	682-385	0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	SOUTHWESTERN BELL	9533	FORT WORTH	TX
2016-02-25	734-201	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLCV - MI	543C	DEXTER	MI
2016-02-25	786-831	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2016-02-25	786-847	0–9 XXXall 10 · 7 holders which blocks →	METROPCS, INC.	5562	KEYS	FL
2016-02-25	803-590	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	CHPNLTLMTS	SC
2016-02-25	810-206	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLCV - MI	543C	BRIGHTON	MI
2016-02-25	873-804	not yet reported which blocks →	Iristel Inc.	154E	Trois-Rivieres	—
2016-02-25	873-823	not yet reported which blocks →	Videotron Ltd.	8306	Weedon	—
2016-02-25	873-824	not yet reported which blocks →	Videotron Ltd.	8306	St-Sebastien (Frontenac Co.)	—
2016-02-25	904-719	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	JACKSONVL	FL
2016-02-25	910-387	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - NC	638E	ROCKINGHAM	NC
2016-02-24	224-487	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC	224C	CARY	IL

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.