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
—	406-941	1XXX2XXX3XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	W GLENDIVE	MT
—	406-945	7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	HAVRE	MT
—	406-947	not yet reported which blocks →	MID-RIVERS TEL. COOP., INC.	2246	MUSSELSHLL	MT
—	406-949	4XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	TOWNSEND	MT
—	406-950	not yet reported which blocks →				MT
—	406-951	7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MILES CITY	MT
—	406-952	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GREATFALLS	MT
—	406-953	1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	SAGEBRUSH CELLULAR, INC.	443B	HARDIN	MT
—	406-954	2XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	ROY	MT
—	406-957	1XXX2XXX3XXX6XXX7XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	TERRY	MT
—	406-958	not yet reported which blocks →				MT
—	406-959	not yet reported which blocks →				MT
—	406-961	2XXX6XXX7XXX9XXX · 4 holders which blocks →	QWEST CORPORATION	9636	HAMILTON	MT
—	406-962	0XXX1XXX2XXX5XXX6XXX7XXX · 4 holders which blocks →	QWEST CORPORATION	9636	JOLIET	MT
—	406-963	none assigned yet which blocks →	NEMONT TEL COOP INC	2247	FROIDRURAL	MT
—	406-964	2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	QWEST CORPORATION	9636	GREATFALLS	MT
—	406-965	1XXX which blocks →	AIRUS, INC. - MT	588H	GREATFALLS	MT
—	406-967	1XXX5XXX · 2 holders which blocks →	PROJECT TEL. CO., INC.	2250	WORDEN	MT
—	406-969	0–9 XXXall 10 · 4 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	BILLINGS	MT
—	406-971	5XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	PLEVNA	MT
—	406-972	not yet reported which blocks →	WEST RIVER COOPERATIVE TELEPHONE COMPANY	1689	WCAMPCROOK	MT
—	406-973	1XXX8XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	SIDNEY	MT
—	406-974	4XXX6XXX7XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	CIRCLE	MT
—	406-975	8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	EKALAKA	MT
—	406-976	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	MT
—	406-977	6XXX7XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	JORDAN	MT
—	406-978	9XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	BAKER	MT
—	406-979	none assigned yet which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	RICHEY	MT
—	406-980	5XXX6XXX7XXX8XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	TOWNSEND	MT
—	406-981	1XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	SOMILES CY	MT
—	406-982	0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks →	CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK	2249	YELLOW BAY	MT
—	406-983	1XXX2XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	ASHLAND	MT
—	406-984	none assigned yet which blocks →	RANGE TEL COOP INC	2251	BIRNEY	MT
—	406-987	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT	6564	GLENDIVE	MT
—	406-989	2XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	W GLENDIVE	MT
—	406-993	0XXX8XXX · 2 holders which blocks →	3 RIVERS TEL. COOP., INC.	2255	BIG SKY	MT
—	406-994	not yet reported which blocks →	QWEST CORPORATION	9636	BOZEMAN	MT
—	406-995	0XXX which blocks →	3 RIVERS TEL. COOP., INC.	2255	BIG SKY	MT
—	407-206	not yet reported which blocks →	CENTURYLINK COMMUNICATIONS LLC - FL	7391	ORLANDO	FL
—	407-207	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL	9417	ORLANDO	FL
—	407-208	2XXX which blocks →	BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL	9417	ORLANDO	FL
—	407-209	3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 TELECOM OF FLORIDA, LP - FL	7635	ORLANDO	FL
—	407-210	not yet reported which blocks →	LEVEL 3 TELECOM OF FLORIDA, LP - FL	7635	ORLANDO	FL
—	407-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	FL
—	407-213	not yet reported which blocks →	ABC PAGING CITY BEEPERS, INC.	6548	WINTERPARK	FL
—	407-215	not yet reported which blocks →	LEVEL 3 TELECOM OF FLORIDA, LP - FL	7635	WINTERPARK	FL
—	407-217	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 TELECOM OF FLORIDA, LP - FL	7635	WINDERMERE	FL
—	407-221	2XXX which blocks →	METROPCS NETWORKS, LLC	899D	SANFORD	FL
—	407-222	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ORLANDO	FL
—	407-224	not yet reported which blocks →	BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL	9417	ORLANDO	FL

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.