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
2016-01-15	385-263	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - UT	871E	ALTA	UT
2016-01-15	424-305	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	LOMITA	CA
2016-01-15	425-626	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	EVERETT	WA
2016-01-15	469-954	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	FORNEY	TX
2016-01-15	470-397	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - GA	067D	ROCKMART	GA
2016-01-15	470-449	0–9 XXXall 10 · 4 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2016-01-15	470-529	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ADAIRSVL	GA
2016-01-15	509-934	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	SPOKANE	WA
2016-01-15	510-345	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	OKLD BKLY	CA
2016-01-15	515-776	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	DES MOINES	IA
2016-01-15	516-260	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NASSAUZN05	NY
2016-01-15	570-927	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	LOCK HAVEN	PA
2016-01-15	646-975	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	NWYRCYZN01	NY
2016-01-15	650-334	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	PALO ALTO	CA
2016-01-15	657-287	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SILVERADO	CA
2016-01-15	702-986	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NV	029F	LAS VEGAS	NV
2016-01-15	754-248	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	FTLAUDERDL	FL
2016-01-15	878-645	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	GREENSBURG	PA
2016-01-15	914-608	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	WSCHSTZN01	NY
2016-01-15	929-216	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN04	NY
2016-01-15	929-217	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN05	NY
2016-01-15	929-290	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN06	NY
2016-01-15	929-301	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN07	NY
2016-01-15	929-433	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN12	NY
2016-01-15	949-239	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	NEWPORTBCH	CA
2016-01-15	971-517	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	MCMINNVL	OR
2016-01-14	305-930	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	KEYS	FL
2016-01-14	317-556	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	INDIANAPLS	IN
2016-01-14	318-701	0XXX1XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - LA	3232	SHREVEPORT	LA
2016-01-14	407-881	0–9 XXXall 10 · 2 holders which blocks →	METROPCS NETWORKS, LLC	899D	ORLANDO	FL
2016-01-14	423-682	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	CHATTNOOGA	TN
2016-01-14	586-448	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-01-14	586-629	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-01-14	586-848	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2016-01-14	629-207	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	MURFREESBO	TN
2016-01-14	629-215	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	NASHVILLE	TN
2016-01-14	702-881	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	LAS VEGAS	NV
2016-01-14	779-239	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PRINCETON	IL
2016-01-14	912-299	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	GEORGIA WINDSTREAM, INC.	4425	UVALDA	GA
2016-01-13	253-392	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	TACOMAWVLY	WA
2016-01-13	254-410	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TEMPLE	TX
2016-01-13	306-805	not yet reported which blocks →	Iristel Inc.	154E	Lanigan	—
2016-01-13	313-509	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	DETROITZN2	MI
2016-01-13	470-389	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2016-01-13	573-284	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	VERSAILLES	MO
2016-01-13	573-550	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FULTON	MO
2016-01-13	579-796	not yet reported which blocks →	Iristel Inc.	154E	L'Epiphanie-l'Assomption	—
2016-01-13	587-604	not yet reported which blocks →	Iristel Inc.	154E	Fort McMurray	—
2016-01-13	608-885	0–9 XXXall 10 · 7 holders which blocks →	UNITED STATES CELLULAR - WI	6274	LANCASTER	WI
2016-01-13	629-772	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	MURFREESBO	TN

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.