Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
—	810-845	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	FLINT	MI
—	810-852	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	BRIGHTON	MI
—	810-853	3XXX4XXX5XXX6XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FLINT	MI
—	810-858	0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	METROPCS, INC.	5562	PORT HURON	MI
—	810-866	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	GRANDBLANC	MI
—	810-867	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	FLUSHING	MI
—	810-869	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	FLINT	MI
—	810-875	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FLINT	MI
—	810-878	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	MICHIGAN BELL TEL CO	9323	CROSWELL	MI
—	810-882	0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	LAPEER	MI
—	810-885	3XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	FENTON	MI
—	810-891	0XXX1XXX3XXX5XXX6XXX9XXX · 3 holders which blocks →	ONVOY, LLCV - MI	543C	SANDUSKY	MI
—	810-892	0XXX1XXX2XXX3XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	MARINECITY	MI
—	810-895	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MI	6120	LAPEER	MI
—	810-901	0XXX5XXX which blocks →	123.NET, LLC	2550	SANDUSKY	MI
—	810-911	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MI
—	810-919	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FLINT	MI
—	810-922	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	FLINT	MI
—	810-923	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	BRIGHTON	MI
—	810-931	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	FLINT	MI
—	810-936	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	FENTON	MI
—	810-938	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FLINT	MI
—	810-941	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	PORT HURON	MI
—	810-950	not yet reported which blocks →				MI
—	810-953	2XXX8XXX · 2 holders which blocks →	MICHIGAN BELL TEL CO	9323	GRANDBLANC	MI
—	810-955	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	FLINT	MI
—	810-956	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	PORT HURON	MI
—	810-957	0–9 XXXall 10 · 5 holders which blocks →	CLEAR RATE COMMUNICATIONS, LLC	046L	LINDEN	MI
—	810-958	9XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	PORT HURON	MI
—	810-959	not yet reported which blocks →				MI
—	810-962	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FLINT	MI
—	810-963	3XXX9XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI	7279	FLINT	MI
—	810-964	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FLINT	MI
—	810-965	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	FLINT	MI
—	810-966	6XXX which blocks →	MICHIGAN BELL TEL CO	9323	PORT HURON	MI
—	810-971	not yet reported which blocks →	SPOK, INC.	6630	PORT HURON	MI
—	810-972	not yet reported which blocks →	AMERICAN MESSAGING SERVICES, LLC	9748	FLINT	MI
—	810-973	not yet reported which blocks →	SPOK, INC.	6630	LAPEER	MI
—	810-976	not yet reported which blocks →				MI
—	810-982	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	PORT HURON	MI
—	810-984	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	PORT HURON	MI
—	810-985	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	PORT HURON	MI
—	810-987	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	PORT HURON	MI
—	810-989	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	PORT HURON	MI
—	810-990	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	PORT HURON	MI
—	810-999	not yet reported which blocks →	MICHIGAN BELL TEL CO	9323	XXXXXXXXXX	MI
—	812-204	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	EVANSVILLE	IN
—	812-205	0XXX1XXX2XXX3XXX4XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	EVANSVILLE	IN
—	812-207	1XXX2XXX · 2 holders which blocks →	METROPCS, INC.	5562	NEW ALBANY	IN
—	812-208	8XXX9XXX which blocks →	METROPCS, INC.	5562	TERREHAUTE	IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.