Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
2014-08-15	587-661	not yet reported which blocks →	Comwave Networks	160G	Standard	—
2014-08-15	587-662	not yet reported which blocks →	Comwave Networks	160G	Stavely	—
2014-08-15	720-481	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DENVER	CO
2014-08-15	757-264	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	NRFOLKZON2	VA
2014-08-15	803-674	0–9 XXXall 10 · 8 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BATESBURG	SC
2014-08-15	832-935	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	SUGAR LAND	TX
2014-08-15	832-942	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	HOUSTON	TX
2014-08-15	872-241	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	CHICGOZN02	IL
2014-08-15	915-246	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	EL PASO	TX
2014-08-15	971-278	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	CLATSKANIE	OR
2014-08-15	971-283	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	SALEM	OR
2014-08-14	415-579	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SNFC CNTRL	CA
2014-08-14	587-656	not yet reported which blocks →	Comwave Networks	160G	High River	—
2014-08-14	587-657	not yet reported which blocks →	Comwave Networks	160G	Champion	—
2014-08-14	587-658	not yet reported which blocks →	Comwave Networks	160G	Strathmore	—
2014-08-14	587-659	not yet reported which blocks →	Comwave Networks	160G	Hussar	—
2014-08-14	587-660	not yet reported which blocks →	Comwave Networks	160G	Nanton	—
2014-08-14	808-374	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - HI	9414	KAUNAKAKAI	HI
2014-08-14	949-627	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LAGUNA BCH	CA
2014-08-13	480-372	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PHOENIX	AZ
2014-08-13	480-431	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PHOENIX	AZ
2014-08-13	480-547	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PHOENIX	AZ
2014-08-13	587-650	not yet reported which blocks →	Comwave Networks	160G	Acme	—
2014-08-13	587-651	not yet reported which blocks →	Comwave Networks	160G	Airdrie	—
2014-08-13	587-652	not yet reported which blocks →	Comwave Networks	160G	Vulcan	—
2014-08-13	587-653	not yet reported which blocks →	Comwave Networks	160G	Banff	—
2014-08-13	587-654	not yet reported which blocks →	Comwave Networks	160G	Canmore	—
2014-08-13	587-655	not yet reported which blocks →	Comwave Networks	160G	Carstairs	—
2014-08-13	709-260	not yet reported which blocks →	Comwave Networks	160G	St. John's	—
2014-08-13	810-226	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	DAVISON	MI
2014-08-13	952-257	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks →	ECKLES TEL. CO.	1386	NEW PRAGUE	MN
2014-08-12	209-715	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	STOCKTON	CA
2014-08-12	210-907	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	SANANTONIO	TX
2014-08-12	210-965	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SANANTONIO	TX
2014-08-12	239-302	0–9 XXXall 10 · 6 holders which blocks →	PAETEC ITEL, LLC	829J	NAPLES	FL
2014-08-12	312-877	0–9 XXXall 10 · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CHICGOZN01	IL
2014-08-12	312-995	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	CHICGOZN01	IL
2014-08-12	312-998	0–9 XXXall 10 · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CHICGOZN01	IL
2014-08-12	318-620	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - LA	749E	FARMERVL	LA
2014-08-12	423-609	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	GREENEVL	TN
2014-08-12	423-661	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	CHATTNOOGA	TN
2014-08-12	438-845	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2014-08-12	470-338	0–9 XXXall 10 · 2 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA	GA
2014-08-12	501-508	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	LITTLEROCK	AR
2014-08-12	506-265	not yet reported which blocks →	Comwave Networks	160G	Bathurst	—
2014-08-12	506-266	not yet reported which blocks →	Comwave Networks	160G	Saint John	—
2014-08-12	506-267	not yet reported which blocks →	Comwave Networks	160G	Fredericton	—
2014-08-12	506-268	not yet reported which blocks →	Comwave Networks	160G	Moncton	—
2014-08-12	512-893	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	AUSTIN	TX
2014-08-12	567-402	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	MAUMEE	OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.