Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
—	269-226	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-227	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	FRONTIER MIDSTATES, INC. - MI	0681	GLENN	MI
—	269-228	4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CASSOPOLIS	MI
—	269-230	0–9 XXXall 10 · 3 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SCHOOLCFT	MI
—	269-232	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	KALAMAZOO	MI
—	269-233	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	CASSOPOLIS	MI
—	269-236	1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks →	FRONTIER MIDSTATES, INC. - MI	0681	PULLMAN	MI
—	269-244	0XXX3XXX4XXX6XXX7XXX · 5 holders which blocks →	FRONTIER NORTH, INC. - MI	0695	THREERIVRS	MI
—	269-248	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	MARSHALL	MI
—	269-250	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLCV - MI	543C	KALAMAZOO	MI
—	269-251	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	KALAMAZOO	MI
—	269-253	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRONTIER MIDSTATES, INC. - MI	0681	LACOTA	MI
—	269-258	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7157	WAYLAND	MI
—	269-260	0XXX which blocks →	ONVOY SPECTRUM, LLC	624H	BARODA	MI
—	269-264	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HAMILTON	MI
—	269-266	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	BRIDGMAN	MI
—	269-267	not yet reported which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	KALAMAZOO	MI
—	269-268	7XXX8XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BATTLE CRK	MI
—	269-269	not yet reported which blocks →				MI
—	269-271	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KALAMAZOO	MI
—	269-272	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	HASTINGS	MI
—	269-273	not yet reported which blocks →	FRONTIER NORTH, INC. - MI	0695	THREERIVRS	MI
—	269-274	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	BATTLE CRK	MI
—	269-275	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	BATTLE CRK	MI
—	269-276	5XXX6XXX · 2 holders which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-278	not yet reported which blocks →	FRONTIER NORTH, INC. - MI	0695	THREERIVRS	MI
—	269-279	4XXX which blocks →	FRONTIER NORTH, INC. - MI	0695	THREERIVRS	MI
—	269-280	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLCV - MI	543C	OLIVET	MI
—	269-287	1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	ST JOSEPH	MI
—	269-288	not yet reported which blocks →	PAETEC ITEL, LLC	829J	BATTLE CRK	MI
—	269-290	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KALAMAZOO	MI
—	269-298	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	BATTLE CRK	MI
—	269-303	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	KALAMAZOO	MI
—	269-310	not yet reported which blocks →	TELNET WORLDWIDE, INC.	817J	BRIDGMAN	MI
—	269-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MI
—	269-317	none assigned yet which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	BATTLE CRK	MI
—	269-320	0XXX1XXX3XXX6XXX8XXX9XXX · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	HASTINGS	MI
—	269-321	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-323	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-324	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-325	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BENTON HBR	MI
—	269-326	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BARODA	MI
—	269-327	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-328	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	BENTON HBR	MI
—	269-329	8XXX9XXX which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-330	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	KALAMAZOO	MI
—	269-333	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-337	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-341	none assigned yet which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI
—	269-342	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	KALAMAZOO	MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.