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
2016-09-07	650-304	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PALO ALTO	CA
2016-09-07	681-249	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MOUNT HOPE	WV
2016-09-07	720-710	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CO	026D	DENVER	CO
2016-09-07	737-881	0–9 XXXall 10 · 8 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BASTROP	TX
2016-09-07	778-547	not yet reported which blocks →	TELUS	8086	Cloverdale	—
2016-09-07	779-801	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	KANKAKEE	IL
2016-09-07	812-978	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	HAYSVILLE	IN
2016-09-07	812-999	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	OAKLAND CY	IN
2016-09-07	831-201	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SANTA CRUZ	CA
2016-09-06	236-601	not yet reported which blocks →	Iristel Inc.	154E	Prince George	—
2016-09-06	272-225	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	WEATHERLY	PA
2016-09-06	272-282	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	MCKEANSBG	PA
2016-09-06	272-381	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - PA	547E	SCHUYLKHVN	PA
2016-09-06	346-570	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7074	HSTNSUBURB	TX
2016-09-06	502-975	0–9 XXXall 10 · 3 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	LOUISVILLE	KY
2016-09-06	719-627	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	COLORDOSPG	CO
2016-09-06	782-356	not yet reported which blocks →	TELUS Integrated Communications	2782	Pubnico	—
2016-09-06	814-338	2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	PTALLEGANY	PA
2016-09-06	814-399	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	SUGARGROVE	PA
2016-09-06	814-485	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - PA	547E	SOMERSET	PA
2016-09-06	814-540	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	NANTY GLO	PA
2016-09-06	857-425	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BRIGHTON	MA
2016-09-06	978-962	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	LEOMINSTER	MA
2016-09-02	205-519	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BESSEMER	AL
2016-09-02	205-526	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	TUSCALOOSA	AL
2016-09-02	209-641	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	STOCKTON	CA
2016-09-02	226-827	not yet reported which blocks →	TELUS Integrated Communications	2782	Maidstone	—
2016-09-02	240-451	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MD	876D	THURMONT	MD
2016-09-02	240-862	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - MD	876D	MT SAVAGE	MD
2016-09-02	240-870	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - MD	876D	MIDDLETOWN	MD
2016-09-02	240-908	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MD	876D	WALKERSVL	MD
2016-09-02	240-913	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - MD	876D	DAMASCS240	MD
2016-09-02	251-264	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MOBILE	AL
2016-09-02	270-561	0XXX2XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - KY	896E	MADISONVL	KY
2016-09-02	272-204	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	FRIEDENSBG	PA
2016-09-02	434-225	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - VA	138E	DRAKESBRCH	VA
2016-09-02	562-337	0–9 XXXall 10 · 6 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	LONG BEACH	CA
2016-09-02	570-405	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	ASHLAND	PA
2016-09-02	587-665	not yet reported which blocks →	Videotron Ltd.	787G	Calgary	—
2016-09-02	602-603	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	PHOENIX	AZ
2016-09-02	669-282	0–9 XXXall 10 · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	CAMPBELL	CA
2016-09-02	709-996	not yet reported which blocks →	TELUS Integrated Communications	2782	Long Pond	—
2016-09-02	778-488	not yet reported which blocks →	Iristel Inc.	154E	North Vancouver	—
2016-09-02	778-660	not yet reported which blocks →	Videotron Ltd.	787G	Vancouver	—
2016-09-02	782-338	not yet reported which blocks →	TELUS Integrated Communications	2782	Lunenburg	—
2016-09-02	782-355	not yet reported which blocks →	TELUS Integrated Communications	2782	Charlottetown	—
2016-09-02	786-789	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - FL	937C	MIAMI	FL
2016-09-02	786-913	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	MIAMI	FL
2016-09-02	804-207	0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - VA	138E	CARTERSVL	VA
2016-09-02	804-361	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - VA	138E	IRVINGTON	VA

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.