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
2019-09-20	409-529	1XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks →	FRACTEL, LLC	965H	BEAUMONT	TX
2019-09-20	438-337	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2019-09-20	647-446	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2019-09-20	657-396	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2019-09-20	681-316	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BURNSVILLE	WV
2019-09-20	681-516	0XXX1XXX2XXX5XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	GAULEY BDG	WV
2019-09-20	681-687	0–9 XXXall 10 · 8 holders which blocks →	FRACTEL, LLC	965H	HNTNGTNZN2	WV
2019-09-20	681-716	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	CRAIGSVL	WV
2019-09-20	681-732	0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks →	FRACTEL, LLC	965H	HELEN	WV
2019-09-20	681-916	2XXX5XXX6XXX8XXX · 3 holders which blocks →	FRACTEL, LLC	965H	EAST LYNN	WV
2019-09-20	682-297	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ARLINGTON	TX
2019-09-20	682-354	0–9 XXXall 10 · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	FORT WORTH	TX
2019-09-20	737-259	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	HUTTO	TX
2019-09-20	825-456	not yet reported which blocks →	Bell Mobility	6574	Calgary	—
2019-09-20	979-356	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	SCHULENBG	TX
2019-09-19	236-766	not yet reported which blocks →	TELUS	8086	Kelowna	—
2019-09-19	308-661	0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	VONAGE AMERICA LLC	197D	GRAND IS	NE
2019-09-19	431-275	not yet reported which blocks →	Bell Mobility	6574	Winnipeg	—
2019-09-19	438-336	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2019-09-19	438-431	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2019-09-19	647-445	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2019-09-19	647-603	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2019-09-19	681-273	0–9 XXXall 10 · 3 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	CHRLSTNZN1	WV
2019-09-19	825-909	not yet reported which blocks →	TELUS	8084	Canmore	—
2019-09-19	939-302	0–9 XXXwhole prefix which blocks →	PUERTO RICO TELCO DBA CLARO PUERTO RICO	4823	BAYAMONNOR	PR
2019-09-19	939-304	0–9 XXXwhole prefix which blocks →	PUERTO RICO TELCO DBA CLARO PUERTO RICO	4823	BAYAMONNOR	PR
2019-09-18	254-365	not yet reported which blocks →	SHELCOMM	0051	CARBON	TX
2019-09-18	254-367	not yet reported which blocks →	SHELCOMM	0051	CISCO	TX
2019-09-18	332-456	0–9 XXXwhole prefix which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN01	NY
2019-09-18	346-396	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	HOUSTON	TX
2019-09-18	365-898	not yet reported which blocks →	Rogers Communications Canada Inc. (Cable)	743B	Oakville	—
2019-09-18	434-597	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - VA	138E	STONYCREEK	VA
2019-09-18	458-240	0–9 XXXall 10 · 5 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	EUGENE	OR
2019-09-18	469-705	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANDPRARI	TX
2019-09-18	469-710	not yet reported which blocks →	SHELCOMM	0051	PLANO	TX
2019-09-18	480-660	0–9 XXXall 10 · 3 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	PHOENIX	AZ
2019-09-18	501-381	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	BENTON	AR
2019-09-18	509-418	0–9 XXXall 10 · 7 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	SPOKANE	WA
2019-09-18	559-710	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	FRESNO	CA
2019-09-18	574-346	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF INDIANA, LLC - IN	279F	ELKHART	IN
2019-09-18	605-650	0–9 XXXall 10 · 4 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	SIOUX FLS	SD
2019-09-18	639-550	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Moose Jaw	—
2019-09-18	639-558	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Moose Jaw	—
2019-09-18	639-855	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Moose Jaw	—
2019-09-18	667-272	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WESTMINSTR	MD
2019-09-18	682-293	not yet reported which blocks →	SHELCOMM	0051	ARLINGTON	TX
2019-09-18	682-296	not yet reported which blocks →	SHELCOMM	0051	GRANDVIEW	TX
2019-09-18	712-591	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	QWEST CORPORATION	9631	HAMBURG	IA
2019-09-18	725-227	0–9 XXXall 10 · 4 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	LAS VEGAS	NV
2019-09-18	775-446	0–9 XXXall 10 · 3 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	RENO	NV

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.