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
2020-04-06	236-379	not yet reported which blocks →	TELUS	8086	North Kamloops	—
2020-04-06	279-204	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SCRM NORTH	CA
2020-04-06	308-304	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	UNITED STATES CELLULAR - NE	6263	MINDEN	NE
2020-04-06	314-760	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ST LOUIS	MO
2020-04-06	337-512	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	CARLYSS	LA
2020-04-06	337-525	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - LA	3232	DE QUINCY	LA
2020-04-06	365-261	not yet reported which blocks →	TELUS Integrated Communications	2782	Ancaster	—
2020-04-06	413-379	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	AMHERST	MA
2020-04-06	458-258	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OR	750E	ROGUERIVER	OR
2020-04-06	567-282	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANSFIELD	OH
2020-04-06	774-429	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	FRAMINGHAM	MA
2020-04-06	804-567	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	KILMARNOCK	VA
2020-04-06	825-444	not yet reported which blocks →	IXICA Communications Inc.	812H	Edmonton	—
2020-04-06	825-666	not yet reported which blocks →	IXICA Communications Inc.	812H	Edmonton	—
2020-04-06	910-704	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	SOUTHEPINS	NC
2020-04-06	956-531	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	LAREDO	TX
2020-04-06	971-771	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OR	750E	DAYTON	OR
2020-04-06	971-791	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - OR	750E	BAY CITY	OR
2020-04-03	210-942	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TX	903C	SANANTONIO	TX
2020-04-03	307-210	0XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SOUTHESRDN	WY
2020-04-03	307-236	8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	BURNS	WY
2020-04-03	470-828	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - GA	8392	BOGARTSTHM	GA
2020-04-03	506-320	not yet reported which blocks →	Bell Mobility Aliant	329A	Fredericton	—
2020-04-03	531-253	0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks →	ONVOY, LLC - NE	549E	OTOE	NE
2020-04-03	531-534	0XXX3XXX4XXX5XXX6XXX · 2 holders which blocks →	ONVOY, LLC - NE	549E	DEWEESE	NE
2020-04-03	531-551	0XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks →	ONVOY, LLC - NE	549E	DUNBAR	NE
2020-04-03	573-932	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	UNITED STATES CELLULAR - MO	6275	CAMDENTON	MO
2020-04-03	657-432	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SILVERADO	CA
2020-04-03	709-307	not yet reported which blocks →	Bell Mobility Aliant	329A	St. John's	—
2020-04-03	782-550	not yet reported which blocks →	Bell Mobility Aliant	329A	Charlottetown	—
2020-04-03	782-639	not yet reported which blocks →	Bell Mobility Aliant	329A	Halifax	—
2020-04-03	907-214	0XXX1XXX2XXX5XXX · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS	6563	WASILLA	AK
2020-04-03	971-372	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	STAYTON	OR
2020-04-03	971-375	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	SALEM	OR
2020-04-02	210-968	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SANANTONIO	TX
2020-04-02	213-424	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MONTEBELLO	CA
2020-04-02	229-304	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	ALBANY	GA
2020-04-02	236-765	not yet reported which blocks →	TELUS	8086	Prince George	—
2020-04-02	531-272	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	OMAHA	NE
2020-04-02	657-429	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2020-04-02	949-512	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	IRVINE	CA
2020-04-02	971-374	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OR	076F	SALEM	OR
2020-04-01	206-705	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	SEATTLE	WA
2020-04-01	209-429	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	GALT	CA
2020-04-01	209-646	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	TURLOCK	CA
2020-04-01	210-864	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	SANANTONIO	TX
2020-04-01	236-965	not yet reported which blocks →	TELUS Mobility	646F	Vancouver	—
2020-04-01	236-966	not yet reported which blocks →	TELUS Mobility	646F	Vancouver	—
2020-04-01	463-232	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	FORTVILLE	IN
2020-04-01	469-798	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GRANDPRARI	TX

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.