Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
2012-04-11	682-444	0–9 XXXall 10 · 3 holders which blocks →	EVOLVE CELLULAR, INC.	139F	GLENDALE	TX
2012-04-10	224-324	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ARLIGTNHTS	IL
2012-04-10	312-219	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	CHICGOZN01	IL
2012-04-10	331-250	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	AURORA	IL
2012-04-10	469-310	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	DALLAS	TX
2012-04-10	574-213	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	SOUTH BEND	IN
2012-04-10	615-603	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	MURFREESBO	TN
2012-04-10	864-315	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC	8534	GREENVILLE	SC
2012-04-10	865-214	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	KNOXVILLE	TN
2012-04-10	901-330	0–9 XXXwhole prefix which blocks →	POWERTEL MEMPHIS LICENSES, INC.	7474	MEMPHIS	TN
2012-04-10	937-701	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	DAYTON	OH
2012-04-09	215-800	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	PHLDLPHZN1	PA
2012-04-09	405-441	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-04-09	405-541	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-04-09	405-754	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-04-09	405-765	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SHAWNEE	OK
2012-04-09	405-902	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-04-09	412-230	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PTTSBGZON1	PA
2012-04-09	412-863	0–9 XXXall 10 · 5 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	PTTSBGZON1	PA
2012-04-09	502-208	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KY	987E	LOUISVILLE	KY
2012-04-09	502-812	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL KENTUCKY LICENSES, INC.	365C	LOUISVILLE	KY
2012-04-09	505-943	0XXX4XXX · 2 holders which blocks →	NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM	4450	SHIPROCK	NM
2012-04-09	516-218	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NASSAUZN03	NY
2012-04-09	646-627	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2012-04-09	917-891	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN03	NY
2012-04-06	407-867	0–9 XXXall 10 · 4 holders which blocks →	TERRA NOVA TELECOM, INC. - FL	382G	ORLANDO	FL
2012-04-06	412-639	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PTTSBGZON1	PA
2012-04-06	518-530	0–9 XXXall 10 · 4 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	ALBANY	NY
2012-04-06	571-428	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MANASSAS	VA
2012-04-06	602-303	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2012-04-06	754-600	0–9 XXXall 10 · 7 holders which blocks →	TERRA NOVA TELECOM, INC. - FL	382G	DEERFLDBCH	FL
2012-04-06	804-625	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	RICHMOND	VA
2012-04-06	859-447	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY	6500	LEXINGTON	KY
2012-04-06	917-732	0–9 XXXall 10 · 5 holders which blocks →	TELENGY L.L.C. - NY	473G	NWYRCYZN09	NY
2012-04-05	226-581	not yet reported which blocks →	TELUS Mobility	8303	Kitchener-Waterloo	—
2012-04-05	226-582	not yet reported which blocks →	TELUS Mobility	8303	London	—
2012-04-05	226-583	not yet reported which blocks →	TELUS Mobility	8303	Brantford	—
2012-04-05	226-584	not yet reported which blocks →	TELUS Mobility	8303	Stratford	—
2012-04-05	240-613	0–9 XXXwhole prefix which blocks →	PAETEC ITEL, LLC	829J	WSHNGTNZN4	MD
2012-04-05	249-357	not yet reported which blocks →	TELUS Mobility	8303	Peterborough	—
2012-04-05	289-672	not yet reported which blocks →	Iristel Inc.	154E	Niagara-On-The-Lake	—
2012-04-05	289-946	not yet reported which blocks →	Videotron Ltd.	787G	Brampton	—
2012-04-05	289-947	not yet reported which blocks →	Videotron Ltd.	787G	Richmond Hill	—
2012-04-05	314-942	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	LADUE	MO
2012-04-05	331-212	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL	7196	AURORA	IL
2012-04-05	443-301	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BALTIMORE	MD
2012-04-05	512-654	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	AUSTIN	TX
2012-04-05	512-655	0–9 XXXall 10 · 4 holders which blocks →	SOUTHWESTERN BELL	9533	AUSTIN	TX
2012-04-05	581-705	not yet reported which blocks →	Iristel Inc.	154E	Quebec	—
2012-04-05	581-742	not yet reported which blocks →	Videotron Ltd.	8306	Quebec	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.