Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 21

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
2013-01-17	832-819	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	HOUSTON	TX
2013-01-17	832-857	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HOUSTON	TX
2013-01-17	919-292	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	SANFORD	NC
2013-01-17	971-309	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OR	7531	WILLAMINA	OR
2013-01-16	210-716	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SANANTONIO	TX
2013-01-16	334-623	0–9 XXXall 10 · 7 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	WEST POINT	AL
2013-01-16	586-332	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2013-01-16	606-446	0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	INTER MOUNTAIN CABLE DBA MIKROTEC COMMUNICATIONS	2623	CUMBERLAND	KY
2013-01-16	727-998	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - FL	937C	HUDSON	FL
2013-01-15	217-904	0–9 XXXall 10 · 4 holders which blocks →	NUSO, LLC	551G	CHAMPAURBN	IL
2013-01-15	218-214	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	BEMIDJI	MN
2013-01-15	224-401	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ALGONQUIN	IL
2013-01-15	224-404	0–9 XXXall 10 · 7 holders which blocks →	ILLINOIS BELL TEL CO	9329	ELK GROVE	IL
2013-01-15	229-421	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	THOMASVL	GA
2013-01-15	269-225	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	PLAINWELL	MI
2013-01-15	314-278	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KIRKWOOD	MO
2013-01-15	314-526	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	KIRKWOOD	MO
2013-01-15	317-760	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	INDIANAPLS	IN
2013-01-15	385-207	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	PROVO	UT
2013-01-15	404-430	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2013-01-15	469-470	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	LEWISVILLE	TX
2013-01-15	516-590	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NASSAUZN09	NY
2013-01-15	571-424	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	WSNGTNZN17	VA
2013-01-15	602-849	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2013-01-15	615-906	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	NASHVILLE	TN
2013-01-15	646-601	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	NWYRCYZN01	NY
2013-01-15	651-410	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	RED WING	MN
2013-01-15	701-236	0XXX which blocks →	MIDCONTINENT COMMUNICATIONS - ND	3065	FESSENDEN	ND
2013-01-15	701-287	0XXX which blocks →	MIDCONTINENT COMMUNICATIONS - ND	3065	DRAKE	ND
2013-01-15	702-337	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LAS VEGAS	NV
2013-01-15	832-501	0–9 XXXall 10 · 3 holders which blocks →	FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS	4344	MONTBLVIEU	TX
2013-01-15	917-794	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN10	NY
2013-01-15	917-818	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN06	NY
2013-01-14	234-333	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	MANCHESTR	OH
2013-01-14	234-904	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	MANCHESTR	OH
2013-01-14	310-905	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNMN MRVS	CA
2013-01-14	323-453	0–9 XXXall 10 · 2 holders which blocks →	METROPCS NETWORKS, LLC	899D	MONTEBELLO	CA
2013-01-14	562-332	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WHITTIER	CA
2013-01-14	661-426	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	BKFD MAIN	CA
2013-01-14	707-296	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	EUREKA	CA
2013-01-14	760-507	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	PALM SPG	CA
2013-01-14	832-907	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2013-01-14	909-315	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CHINO	CA
2013-01-14	949-392	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	CAPITRNVLY	CA
2013-01-14	951-319	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MURRIETA	CA
2013-01-11	210-773	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	SANANTONIO	TX
2013-01-11	234-713	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	NO CANTON	OH
2013-01-11	234-773	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	NO CANTON	OH
2013-01-11	248-296	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	PONTIAC	MI
2013-01-11	312-631	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CHICGOZN01	IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.