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
2013-05-20	971-320	0–9 XXXall 10 · 9 holders which blocks →	T-MOBILE USA, INC.	6529	SEASIDE	OR
2013-05-20	980-444	0–9 XXXall 10 · 6 holders which blocks →	SOUTH CAROLINA NET, INC. - NC	511C	MOORESVL	NC
2013-05-20	985-302	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - LA	153F	COVINGTON	LA
2013-05-19	513-802	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CINCINNATI	OH
2013-05-17	267-355	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHPHSBZN43	PA
2013-05-17	267-400	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHPHSBZN43	PA
2013-05-17	267-922	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHPHSBZN43	PA
2013-05-17	267-969	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHLDLPHZN2	PA
2013-05-17	289-594	not yet reported which blocks →	Comwave Networks	160G	Palgrave	—
2013-05-17	289-851	not yet reported which blocks →	Bell Canada	8051	Milton	—
2013-05-17	313-472	0–9 XXXall 10 · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	DETROITZN5	MI
2013-05-17	613-554	not yet reported which blocks →	Fibernetics Corporation	464D	Belleville	—
2013-05-17	613-666	not yet reported which blocks →	Fibernetics Corporation	464D	Madoc	—
2013-05-17	804-208	0XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - VA	4644	BEAVERDAM	VA
2013-05-17	816-908	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7594	KANSASCITY	MO
2013-05-17	864-520	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	GREENVILLE	SC
2013-05-16	385-220	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - UT	871E	FARMINGTON	UT
2013-05-16	424-332	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	BEVERLYHLS	CA
2013-05-16	435-218	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - UT	871E	ST GEORGE	UT
2013-05-16	510-362	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	HAYWARD	CA
2013-05-16	567-309	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	MANSFIELD	OH
2013-05-16	571-551	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSNGTNZN08	VA
2013-05-16	618-607	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	O FALLON	IL
2013-05-16	641-450	0–9 XXXall 10 · 5 holders which blocks →	NORTHLAND COMMUNICATIONS, INC. - IA	068H	MASON CITY	IA
2013-05-16	786-614	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2013-05-16	786-616	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2013-05-16	812-802	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	EVANSVILLE	IN
2013-05-16	862-309	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	MORRISTOWN	NJ
2013-05-15	206-258	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	SEATTLE	WA
2013-05-15	210-810	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	SANANTONIO	TX
2013-05-15	226-670	not yet reported which blocks →	Comwave Networks	160G	Wardsville	—
2013-05-15	226-690	not yet reported which blocks →	Comwave Networks	160G	Glencoe	—
2013-05-15	289-592	not yet reported which blocks →	Comwave Networks	160G	Schomberg	—
2013-05-15	289-593	not yet reported which blocks →	Comwave Networks	160G	Thornhill	—
2013-05-15	289-595	not yet reported which blocks →	Comwave Networks	160G	Uxbridge	—
2013-05-15	289-596	not yet reported which blocks →	Comwave Networks	160G	Woodbridge	—
2013-05-15	289-614	not yet reported which blocks →	Comwave Networks	160G	Aurora	—
2013-05-15	289-615	not yet reported which blocks →	Comwave Networks	160G	Bethesda	—
2013-05-15	289-616	not yet reported which blocks →	Comwave Networks	160G	Bolton	—
2013-05-15	289-617	not yet reported which blocks →	Comwave Networks	160G	Gormley	—
2013-05-15	289-618	not yet reported which blocks →	Comwave Networks	160G	King City	—
2013-05-15	289-661	not yet reported which blocks →	Comwave Networks	160G	Markham	—
2013-05-15	289-662	not yet reported which blocks →	Comwave Networks	160G	Mount Albert	—
2013-05-15	289-663	not yet reported which blocks →	Comwave Networks	160G	Newmarket	—
2013-05-15	289-664	not yet reported which blocks →	Comwave Networks	160G	Nobleton	—
2013-05-15	289-665	not yet reported which blocks →	Comwave Networks	160G	Oak Ridges	—
2013-05-15	289-867	not yet reported which blocks →	Comwave Networks	160G	Richmond Hill	—
2013-05-15	586-210	0–9 XXXall 10 · 6 holders which blocks →	FIRST COMMUNICATIONS, LLC	460K	NEWBALTIMR	MI
2013-05-15	720-683	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	FORTLUPTON	CO
2013-05-15	832-705	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BAMMEL	TX

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.