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
2020-03-13	236-562	not yet reported which blocks →	Videotron Ltd.	383F	Victoria	—
2020-03-13	236-655	not yet reported which blocks →	Videotron Ltd.	383F	Courtenay	—
2020-03-13	236-687	not yet reported which blocks →	Videotron Ltd.	383F	Penticton	—
2020-03-13	236-795	not yet reported which blocks →	Videotron Ltd.	383F	Kelowna	—
2020-03-13	417-480	0XXX3XXX4XXX7XXX9XXX · 4 holders which blocks →	AT&T - LOCAL	7421	ASH GROVE	MO
2020-03-13	507-716	0XXX1XXX4XXX6XXX7XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MN	980E	ROUND LAKE	MN
2020-03-13	507-717	0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MN	980E	STORDEN	MN
2020-03-13	516-696	0–9 XXXall 10 · 4 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	NASSAUZN02	NY
2020-03-13	561-490	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WPALMBEACH	FL
2020-03-13	657-425	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	WESTMINSTR	CA
2020-03-13	804-546	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA	7238	RICHMOND	VA
2020-03-13	825-735	not yet reported which blocks →	Videotron Ltd.	787G	Calgary	—
2020-03-13	825-903	not yet reported which blocks →	Videotron Ltd.	383F	Medicine Hat	—
2020-03-13	862-351	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NJ	4804	SUSSEX	NJ
2020-03-13	864-572	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	SPARTANBG	SC
2020-03-13	872-261	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHICGOZN10	IL
2020-03-12	309-604	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	FARMINGTON	IL
2020-03-12	507-715	0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MN	980E	JEFFERS	MN
2020-03-12	620-250	0XXX1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks →	AT&T - LOCAL	7421	CANTON	KS
2020-03-12	626-514	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	PSDN PSDN	CA
2020-03-12	667-279	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC - MD	876D	BISHOPVL	MD
2020-03-11	236-412	not yet reported which blocks →	Videotron Ltd.	787G	Vancouver	—
2020-03-11	236-852	not yet reported which blocks →	Videotron Ltd.	383F	South Kamloops	—
2020-03-11	609-930	0–9 XXXall 10 · 7 holders which blocks →	AT&T - LOCAL	7421	BRIGANTINE	NJ
2020-03-11	615-282	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL NASHVILLE LICENSES, INC.	7476	FRANKLIN	TN
2020-03-11	629-238	0–9 XXXall 10 · 6 holders which blocks →	POWERTEL NASHVILLE LICENSES, INC.	7476	MURFREESBO	TN
2020-03-11	727-334	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	TARPON SPG	FL
2020-03-11	775-452	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NV	075F	DCKWTRCRNT	NV
2020-03-11	825-343	not yet reported which blocks →	Videotron Ltd.	787G	Edmonton	—
2020-03-10	405-856	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	EDMOND	OK
2020-03-10	405-868	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	T-MOBILE USA, INC.	6529	BETHANY	OK
2020-03-10	470-573	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	BUFORD	GA
2020-03-10	470-584	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	COVINGTON	GA
2020-03-10	470-590	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2020-03-10	470-594	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	ATLANTA NE	GA
2020-03-10	470-630	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2020-03-10	480-631	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF ARIZONA, LLC - AZ	579F	PHOENIX	AZ
2020-03-10	561-489	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	WPALMBEACH	FL
2020-03-10	657-424	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2020-03-10	802-531	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - VT	005F	WILLIAMSVL	VT
2020-03-10	830-252	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BULVERDE	TX
2020-03-10	940-299	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DENTON	TX
2020-03-10	949-539	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	TRABUCO	CA
2020-03-09	205-953	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	JASPER	AL
2020-03-09	209-415	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ANGELSCAMP	CA
2020-03-09	223-232	0–9 XXXall 10 · 8 holders which blocks →	METROPCS, INC.	5562	YORK	PA
2020-03-09	252-552	0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks →	ONVOY, LLC - NC	638E	WAVES	NC
2020-03-09	414-251	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	MILWAUKZN1	WI
2020-03-09	423-644	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	SODDYDAISY	TN
2020-03-09	438-296	not yet reported which blocks →	Bell Mobility	6574	Montreal	—

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.