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
2014-08-20	757-920	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	WILLIAMSBG	VA
2014-08-20	865-352	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	SHARPSCHPL	TN
2014-08-20	867-323	not yet reported which blocks →	Bell Mobility	6574	Haines Junction	—
2014-08-20	867-324	not yet reported which blocks →	Bell Mobility	6574	Igloolik	—
2014-08-20	867-325	not yet reported which blocks →	Bell Mobility	6574	Old Crow	—
2014-08-19	206-471	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	SEATTLE	WA
2014-08-19	289-497	not yet reported which blocks →	Fibernetics Corporation	464D	Cooksville	—
2014-08-19	312-785	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHICGOZN01	IL
2014-08-19	385-237	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MIDVALE	UT
2014-08-19	385-238	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	OGDEN	UT
2014-08-19	438-239	not yet reported which blocks →	Fibernetics Corporation	464D	Montreal	—
2014-08-19	440-482	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	VICTORY	OH
2014-08-19	512-840	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	AUSTIN	TX
2014-08-19	513-816	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	HAMILTON	OH
2014-08-19	513-818	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	CINCINNATI	OH
2014-08-19	520-257	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	TUCSON	AZ
2014-08-19	520-273	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	TUCSON	AZ
2014-08-19	587-472	not yet reported which blocks →	TELUS	8084	Calgary	—
2014-08-19	614-954	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	ALTON	OH
2014-08-19	647-946	not yet reported which blocks →	Fibernetics Corporation	464D	Toronto	—
2014-08-19	867-733	not yet reported which blocks →	Bell Mobility	6574	Carcross	—
2014-08-19	915-270	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	EL PASO	TX
2014-08-18	208-971	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	BOISE	ID
2014-08-18	302-515	0–9 XXXall 10 · 6 holders which blocks →	VERIZON DELAWARE, INC.	9210	GEORGETOWN	DE
2014-08-18	386-361	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	LAKE CITY	FL
2014-08-18	423-616	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TN	525E	MORRISTOWN	TN
2014-08-18	510-829	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	RICHMOND	CA
2014-08-18	513-781	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	LTL MIAMI	OH
2014-08-18	513-970	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	LEBANON	OH
2014-08-18	720-417	0–9 XXXall 10 · 2 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	3467	DENVER	CO
2014-08-18	720-486	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DENVER	CO
2014-08-18	901-430	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TN	124F	ARLINGTON	TN
2014-08-18	909-541	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	CLAREMONT	CA
2014-08-18	910-370	0–9 XXXall 10 · 8 holders which blocks →	FRONTIER COMMUNICATIONS OF AMERICA, INC. - NC	440G	LUMBERTON	NC
2014-08-15	225-380	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	DENHAM SPG	LA
2014-08-15	236-260	not yet reported which blocks →	Comwave Networks	160G	Aldergrove	—
2014-08-15	236-261	not yet reported which blocks →	Comwave Networks	160G	Boston Bar	—
2014-08-15	236-262	not yet reported which blocks →	Comwave Networks	160G	Britannia Beach	—
2014-08-15	236-263	not yet reported which blocks →	Comwave Networks	160G	Newton	—
2014-08-15	236-264	not yet reported which blocks →	Comwave Networks	160G	West Vancouver	—
2014-08-15	236-265	not yet reported which blocks →	Comwave Networks	160G	White Rock	—
2014-08-15	236-266	not yet reported which blocks →	Comwave Networks	160G	Richmond	—
2014-08-15	236-267	not yet reported which blocks →	Comwave Networks	160G	Whonnock	—
2014-08-15	252-590	0–9 XXXall 10 · 5 holders which blocks →	FRONTIER COMMUNICATIONS OF AMERICA, INC. - NC	440G	HENDERSON	NC
2014-08-15	302-278	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - DE	073F	REHOBOTH	DE
2014-08-15	402-971	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NE	995E	HEBRON	NE
2014-08-15	415-936	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CORTEMADRA	CA
2014-08-15	475-221	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CT	199F	BRANFORD	CT
2014-08-15	540-634	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	MINERAL	VA
2014-08-15	541-668	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	BEND	OR

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.