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
2016-05-25	667-281	0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF MARYLAND, LLC	568G	SALISBURY	MD
2016-05-25	778-362	not yet reported which blocks →	TELUS	8086	South Kamloops	—
2016-05-25	778-795	not yet reported which blocks →	TELUS	8086	Westbank	—
2016-05-25	778-796	not yet reported which blocks →	TELUS	8086	Rutland	—
2016-05-25	786-858	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2016-05-25	804-483	0–9 XXXwhole prefix which blocks →	PAETEC ITEL, LLC	829J	RICHMOND	VA
2016-05-25	843-931	0–9 XXXall 10 · 5 holders which blocks →	PALMETTO TELEPHONE COMMUNICATIONS, LLC - SC	154C	ST GEORGE	SC
2016-05-25	873-265	not yet reported which blocks →	Comwave Networks	160G	Grand'Mere	—
2016-05-25	873-302	not yet reported which blocks →	Comwave Networks	160G	Plessisville	—
2016-05-25	937-991	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	DAYTON	OH
2016-05-25	949-662	0–9 XXXall 10 · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	NEWPORTBCH	CA
2016-05-24	206-483	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	SEATTLE	WA
2016-05-24	209-280	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	LODI	CA
2016-05-24	254-795	0XXX1XXX5XXX7XXX9XXX · 3 holders which blocks →	PATHWAY COM-TEL, INC. - TX	8253	HICO	TX
2016-05-24	302-612	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE	6393	CAMDEN	DE
2016-05-24	469-832	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	DALLAS	TX
2016-05-24	484-512	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	READING	PA
2016-05-24	661-365	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	PLDL PLDL	CA
2016-05-24	865-328	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TN	525E	LENOIRCITY	TN
2016-05-24	865-355	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - TN	525E	LAKE CITY	TN
2016-05-24	909-601	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	S BERNDINO	CA
2016-05-24	954-884	0–9 XXXall 10 · 8 holders which blocks →	PAETEC ITEL, LLC	829J	POMPANOBCH	FL
2016-05-23	216-954	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	CLEVELAND	OH
2016-05-23	346-954	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	DEER PARK	TX
2016-05-23	425-690	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	RENTON	WA
2016-05-23	515-350	0–9 XXXall 10 · 4 holders which blocks →	UNITED STATES CELLULAR - IA	6266	DES MOINES	IA
2016-05-23	518-948	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ALBANY	NY
2016-05-23	667-706	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	ELKTON	MD
2016-05-23	934-800	0–9 XXXall 10 · 4 holders which blocks →	EVOLVE CELLULAR, INC.	139F	YAPHANK	NY
2016-05-23	934-852	0–9 XXXall 10 · 5 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	YAPHANK	NY
2016-05-20	346-410	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HSTNSUBURB	TX
2016-05-20	585-577	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	CANANDAGUA	NY
2016-05-20	682-352	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GLENDALE	TX
2016-05-20	867-208	not yet reported which blocks →	SSi Micro Ltd.	940G	Cambridge Bay	—
2016-05-20	867-209	not yet reported which blocks →	SSi Micro Ltd.	940G	Kinngait	—
2016-05-20	867-210	not yet reported which blocks →	SSi Micro Ltd.	940G	Chesterfield Inlet	—
2016-05-20	867-220	not yet reported which blocks →	SSi Micro Ltd.	940G	Kugluktuk	—
2016-05-20	867-221	not yet reported which blocks →	SSi Micro Ltd.	940G	Pangnirtung	—
2016-05-20	867-224	not yet reported which blocks →	SSi Micro Ltd.	940G	Pond Inlet	—
2016-05-20	867-226	not yet reported which blocks →	SSi Micro Ltd.	940G	Rankin Inlet	—
2016-05-20	934-222	0–9 XXXall 10 · 6 holders which blocks →	EVOLVE CELLULAR, INC.	139F	SOUTHAMPTN	NY
2016-05-20	934-333	0–9 XXXall 10 · 6 holders which blocks →	EVOLVE CELLULAR, INC.	139F	LINDENHST	NY
2016-05-20	934-444	0–9 XXXall 10 · 4 holders which blocks →	EVOLVE CELLULAR, INC.	139F	AMITYVILLE	NY
2016-05-20	934-666	0–9 XXXall 10 · 3 holders which blocks →	EVOLVE CELLULAR, INC.	139F	CENTRAISLP	NY
2016-05-20	934-777	0–9 XXXall 10 · 3 holders which blocks →	EVOLVE CELLULAR, INC.	139F	BRENTWOOD	NY
2016-05-20	934-888	0–9 XXXall 10 · 5 holders which blocks →	EVOLVE CELLULAR, INC.	139F	BAY SHORE	NY
2016-05-19	267-866	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	PHLDLPHZN1	PA
2016-05-19	480-417	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	PHOENIX	AZ
2016-05-19	581-219	not yet reported which blocks →	TELUS Quebec	2243	Valcartier	—
2016-05-19	602-831	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AZ	587F	PHOENIX	AZ

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.