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
2012-11-19	614-904	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	7836	GAHANNA	OH
2012-11-19	623-666	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AZ	630E	PHOENIX	AZ
2012-11-19	701-800	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - ND	452F	LEONARD	ND
2012-11-19	701-888	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - ND	452F	MANVEL	ND
2012-11-19	708-520	0–9 XXXwhole prefix which blocks →	ILLINOIS BELL TEL CO	9329	OAK LAWN	IL
2012-11-19	786-602	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	551G	MIAMI	FL
2012-11-19	856-408	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	NUSO, LLC	551G	CAMDEN	NJ
2012-11-19	872-465	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC	224C	CHICGOZN07	IL
2012-11-19	872-829	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC	224C	CHICGOZN04	IL
2012-11-19	978-999	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	ROCKPORT	MA
2012-11-19	980-888	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC	350F	GASTONIA	NC
2012-11-16	210-636	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	SANANTONIO	TX
2012-11-16	234-231	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	7443	AKRON	OH
2012-11-16	406-313	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MT	453F	BOULDER	MT
2012-11-16	406-744	2XXX4XXX · 2 holders which blocks →	WESTERN MONTANA COMMUNITYTEL INC. - MT	986F	STIGNATIUS	MT
2012-11-16	414-522	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI	6508	MILWAUKZN1	WI
2012-11-16	435-315	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	HEBER CITY	UT
2012-11-16	505-398	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	LAS VEGAS	NM
2012-11-16	512-952	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX	7249	AUSTIN	TX
2012-11-16	520-474	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	TUCSON	AZ
2012-11-16	571-302	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	WSNGTNZN08	VA
2012-11-16	571-550	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	WSNGTNZN17	VA
2012-11-16	715-721	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	COLBY	WI
2012-11-16	720-552	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LONGMONT	CO
2012-11-16	720-634	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	DENVER	CO
2012-11-16	779-208	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	ROCKFORD	IL
2012-11-16	917-615	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	NWYRCYZN07	NY
2012-11-16	920-234	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	SHEBOGNFLS	WI
2012-11-16	951-228	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	ELSINORE	CA
2012-11-15	208-216	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BAYVIEW	ID
2012-11-15	512-781	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SAN MARCOS	TX
2012-11-15	720-408	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	DENVER	CO
2012-11-15	720-502	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	DENVER	CO
2012-11-15	916-297	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	RSVL MAIN	CA
2012-11-15	951-364	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	HEMT SAGE	CA
2012-11-14	254-735	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CISCO	TX
2012-11-14	325-219	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	SWEETWATER	TX
2012-11-14	430-562	0–9 XXXall 10 · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	ATLANTA	TX
2012-11-14	484-218	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	BERNVILLE	PA
2012-11-14	561-360	0–9 XXXall 10 · 3 holders which blocks →	ITS FIBER, LLC	572G	WPALMBEACH	FL
2012-11-14	682-213	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TX	903C	GLENDALE	TX
2012-11-14	702-817	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV	6458	LAS VEGAS	NV
2012-11-14	708-607	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEOTONE	IL
2012-11-14	832-803	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HOUSTON	TX
2012-11-14	912-785	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	BAXLEY	GA
2012-11-13	226-256	not yet reported which blocks →	Fibernetics Corporation	464D	Owen Sound	—
2012-11-13	226-257	not yet reported which blocks →	Fibernetics Corporation	464D	Walkerton	—
2012-11-13	226-258	not yet reported which blocks →	Fibernetics Corporation	464D	Durham	—
2012-11-13	405-892	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHICKASHA	OK
2012-11-13	475-212	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF CONNECTICUT, LLC - CT	539F	NAUGATUCK	CT

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.