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
2016-04-07	587-421	not yet reported which blocks →	Distributel	081E	Brocket	—
2016-04-07	587-422	not yet reported which blocks →	Distributel	081E	Cardston	—
2016-04-07	587-424	not yet reported which blocks →	Distributel	081E	Claresholm	—
2016-04-07	608-615	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LA CROSSE	WI
2016-04-07	740-690	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OH	464C	GAMBIER	OH
2016-04-07	765-888	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks →	PEERLESS NETWORK OF INDIANA, LLC - IN	279F	CHESTERFLD	IN
2016-04-07	872-843	0–9 XXXwhole prefix which blocks →	ILLINOIS BELL TEL CO	9329	CHICGOZN04	IL
2016-04-07	902-550	not yet reported which blocks →	Bragg Communications Inc.	4878	Inverness	—
2016-04-07	937-230	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - OH	464C	MILFORDCTR	OH
2016-04-07	937-880	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OH	464C	RAYMOND	OH
2016-04-07	937-967	1XXX2XXX3XXX4XXX · 2 holders which blocks →	ONVOY, LLC - OH	464C	MT VICTORY	OH
2016-04-06	209-702	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	MODESTO	CA
2016-04-06	346-253	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANVEL	TX
2016-04-06	401-666	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF RHODE ISLAND, LLC - RI	631G	CUMBLND HL	RI
2016-04-06	469-776	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	DALLAS	TX
2016-04-06	731-777	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF TENNESSEE, LLC - TN	276F	DYERSBURG	TN
2016-04-06	743-999	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC	350F	WINSTN SAL	NC
2016-04-06	825-636	not yet reported which blocks →	Distributel	081E	Gadsby	—
2016-04-06	825-637	not yet reported which blocks →	Distributel	081E	Halkirk	—
2016-04-06	825-638	not yet reported which blocks →	Distributel	081E	Hanna	—
2016-04-06	825-639	not yet reported which blocks →	Distributel	081E	Innisfail	—
2016-04-06	825-640	not yet reported which blocks →	Distributel	081E	Lacombe	—
2016-04-06	825-641	not yet reported which blocks →	Distributel	081E	Leslieville	—
2016-04-06	825-642	not yet reported which blocks →	Distributel	081E	Mirror	—
2016-04-06	825-643	not yet reported which blocks →	Distributel	081E	Morrin	—
2016-04-06	825-644	not yet reported which blocks →	Distributel	081E	Nordegg	—
2016-04-06	825-646	not yet reported which blocks →	Distributel	081E	Olds	—
2016-04-06	825-647	not yet reported which blocks →	Distributel	081E	Oyen	—
2016-04-06	825-648	not yet reported which blocks →	Distributel	081E	Penhold	—
2016-04-06	825-649	not yet reported which blocks →	Distributel	081E	Ponoka	—
2016-04-06	825-650	not yet reported which blocks →	Distributel	081E	Rimbey	—
2016-04-06	825-651	not yet reported which blocks →	Distributel	081E	Rocky Mountain House	—
2016-04-06	825-652	not yet reported which blocks →	Distributel	081E	Rosebud	—
2016-04-06	825-653	not yet reported which blocks →	Distributel	081E	Rumsey	—
2016-04-06	825-654	not yet reported which blocks →	Distributel	081E	Saskatchewan River Crossing	—
2016-04-06	825-655	not yet reported which blocks →	Distributel	081E	Sibbald	—
2016-04-06	825-656	not yet reported which blocks →	Distributel	081E	Spruceview	—
2016-04-06	825-657	not yet reported which blocks →	Distributel	081E	Stettler	—
2016-04-06	825-658	not yet reported which blocks →	Distributel	081E	Sunchild O'Chiese	—
2016-04-06	825-659	not yet reported which blocks →	Distributel	081E	Sundre	—
2016-04-06	825-660	not yet reported which blocks →	Distributel	081E	Sylvan Lake	—
2016-04-06	825-661	not yet reported which blocks →	Distributel	081E	Three Hills	—
2016-04-06	825-662	not yet reported which blocks →	Distributel	081E	Torrington	—
2016-04-06	825-663	not yet reported which blocks →	Distributel	081E	Trochu	—
2016-04-06	825-664	not yet reported which blocks →	Distributel	081E	Veteran	—
2016-04-06	825-665	not yet reported which blocks →	Distributel	081E	Youngstown	—
2016-04-06	831-999	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SANTA CRUZ	CA
2016-04-06	929-306	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN11	NY
2016-04-06	929-307	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN13	NY
2016-04-06	929-308	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN14	NY

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.