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
2016-06-16	805-871	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CONEJO	CA
2016-06-16	825-210	not yet reported which blocks →	TELUS	8084	Calgary	—
2016-06-16	825-410	not yet reported which blocks →	TELUS	8084	Edmonton	—
2016-06-16	825-645	not yet reported which blocks →	TELUS Mobility	8301	Fort McMurray	—
2016-06-16	825-999	not yet reported which blocks →	TELUS Mobility	8301	Calgary	—
2016-06-16	908-356	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	PLAINFIELD	NJ
2016-06-15	612-512	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TWINCITIES	MN
2016-06-15	651-443	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TWINCITIES	MN
2016-06-15	813-860	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	TAMPACEN	FL
2016-06-14	313-356	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	DETROITZN3	MI
2016-06-14	470-321	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ATLANTA NE	GA
2016-06-14	510-890	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	RICHMOND	CA
2016-06-14	587-498	not yet reported which blocks →	TELUS	8084	Edmonton	—
2016-06-14	587-499	not yet reported which blocks →	TELUS	8084	Edmonton	—
2016-06-14	701-946	0–9 XXXall 10 · 3 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BISMARCK	ND
2016-06-14	812-904	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN	7440	HANOVER	IN
2016-06-14	858-329	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SNDG MRMS	CA
2016-06-14	867-907	not yet reported which blocks →	SSi Micro Ltd.	940G	Iqaluit	—
2016-06-13	480-462	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2016-06-13	765-801	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN	7440	MANILLA	IN
2016-06-13	856-394	0–9 XXXall 10 · 9 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MOORESTOWN	NJ
2016-06-13	870-913	3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SWIFTON	AR
2016-06-11	845-305	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	BEACON	NY
2016-06-10	260-412	0XXX1XXX2XXX3XXX4XXX · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN	7440	ASHLEY	IN
2016-06-10	346-412	0–9 XXXall 10 · 3 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	CYPRESS	TX
2016-06-10	442-294	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	RIDGECREST	CA
2016-06-10	470-550	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	ATLANTA NE	GA
2016-06-10	509-907	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	YAKIMA	WA
2016-06-10	510-993	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	OKLD BKLY	CA
2016-06-10	579-204	not yet reported which blocks →	TELUS Quebec	2243	Ste-Rose	—
2016-06-10	650-836	0–9 XXXwhole prefix which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	PESCADERO	CA
2016-06-10	657-334	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	WESTMINSTR	CA
2016-06-10	762-228	0–9 XXXall 10 · 5 holders which blocks →	WINDSTREAM STANDARD, INC.	0386	CLEVELAND	GA
2016-06-09	510-806	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	RICHMOND	CA
2016-06-09	571-260	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - VA	8825	DALE CITY	VA
2016-06-09	574-413	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IN	7314	SOUTH BEND	IN
2016-06-09	606-283	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - KY	896E	LIVINGSTON	KY
2016-06-09	606-293	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - KY	896E	FERNLEAF	KY
2016-06-09	606-705	0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks →	ONVOY, LLC - KY	896E	LEWISBURG	KY
2016-06-09	606-839	0XXX1XXX2XXX4XXX · 3 holders which blocks →	ONVOY, LLC - KY	896E	MAYS LICK	KY
2016-06-09	608-720	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC WI	7216	MADISON	WI
2016-06-09	928-250	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	SAFFORD	AZ
2016-06-09	934-451	0–9 XXXall 10 · 6 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	BELLPORT	NY
2016-06-08	530-551	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ANDERSON	CA
2016-06-08	559-615	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	PORTERVL	CA
2016-06-08	567-409	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BUCYRUS	OH
2016-06-08	606-203	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - KY	896E	DOVER	KY
2016-06-08	606-288	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - KY	896E	FAUBUSH	KY
2016-06-08	608-480	0–9 XXXall 10 · 4 holders which blocks →	UNITED STATES CELLULAR - WI	6274	STOUGHTON	WI
2016-06-08	825-826	not yet reported which blocks →	Distributel	081E	Ardrossan	—

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.