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
2014-07-30	226-278	not yet reported which blocks →	Comwave Networks	160G	Markdale	—
2014-07-30	226-834	not yet reported which blocks →	Comwave Networks	160G	Bothwell	—
2014-07-30	343-691	not yet reported which blocks →	Comwave Networks	160G	Alfred	—
2014-07-30	470-448	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	ATLANTA NE	GA
2014-07-30	719-822	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	COLORDOSPG	CO
2014-07-30	763-337	0–9 XXXall 10 · 3 holders which blocks →	QWEST CORPORATION	9631	TWINCITIES	MN
2014-07-30	873-860	not yet reported which blocks →	Videotron Ltd.	8306	Val-D'Or	—
2014-07-30	937-971	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	XENIA	OH
2014-07-29	315-949	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	SYRACUSE	NY
2014-07-29	402-983	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE	5807	OMAHA	NE
2014-07-29	480-468	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2014-07-29	585-363	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	ROCHESTER	NY
2014-07-29	602-783	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2014-07-29	607-393	0XXX7XXX8XXX9XXX · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BINGHAMTON	NY
2014-07-29	631-997	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	SELDEN	NY
2014-07-29	646-779	0–9 XXXwhole prefix which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN01	NY
2014-07-29	720-829	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	DENVER	CO
2014-07-29	845-763	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	POUGHKEPSI	NY
2014-07-28	442-245	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	VISTA	CA
2014-07-28	510-833	0–9 XXXall 10 · 4 holders which blocks →	COMCAST PHONE OF CALIFORNIA, LLC	394L	OKLD BKLY	CA
2014-07-28	510-871	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	OKLD ALMD	CA
2014-07-28	581-212	not yet reported which blocks →	TELUS Quebec	2243	Dolbeau	—
2014-07-28	581-217	not yet reported which blocks →	TELUS Quebec	2243	Roberval	—
2014-07-28	581-218	not yet reported which blocks →	TELUS Quebec	2243	St-Felicien	—
2014-07-28	669-238	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SNJS NORTH	CA
2014-07-28	778-774	not yet reported which blocks →	Navigata Communications Limited	078G	Nelson	—
2014-07-28	778-799	not yet reported which blocks →	Navigata Communications Limited	078G	Williams Lake	—
2014-07-28	857-703	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	HYDE PARK	MA
2014-07-28	873-650	not yet reported which blocks →	Videotron Ltd.	328F	Maniwaki	—
2014-07-28	910-501	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	LAURINBURG	NC
2014-07-28	915-251	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	EL PASO	TX
2014-07-28	971-361	0–9 XXXall 10 · 5 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7172	PORTLAND	OR
2014-07-28	971-806	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR	5820	PORTLAND	OR
2014-07-28	984-234	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	CHAPELHILL	NC
2014-07-25	224-830	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ARLIGTNHTS	IL
2014-07-25	323-553	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LSAN DA 06	CA
2014-07-25	415-915	0–9 XXXall 10 · 2 holders which blocks →	PAETEC ITEL, LLC	829J	SNFC CNTRL	CA
2014-07-25	517-940	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LANSING	MI
2014-07-25	573-591	0–9 XXXall 10 · 5 holders which blocks →	CHARITON VALLEY COMMUNICATIONS CORPORATION	250A	MEXICO	MO
2014-07-25	580-290	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	WOODWARD	OK
2014-07-25	616-215	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	GRANDHAVEN	MI
2014-07-25	616-930	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	GRAND RPDS	MI
2014-07-25	626-634	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	COVINA	CA
2014-07-25	873-393	not yet reported which blocks →	TELUS Quebec	2243	Amos	—
2014-07-25	907-202	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS	6563	ANCHORAGE	AK
2014-07-25	916-582	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	ELK GROVE	CA
2014-07-25	989-930	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	SAGINAW	MI
2014-07-24	432-276	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	ODESSA	TX
2014-07-24	580-308	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OK	119F	TONKAWA	OK
2014-07-24	715-716	0–9 XXXall 10 · 5 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HUDSON	WI

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.