Recent prefix assignments

3 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 447

NEW CINGULAR WIRELESS PCS, LLC - IL 2

8X8, INC. 1

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
2024-03-13	447-290	0XXX1XXX2XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC	224C	EFFINGHAM	IL
2024-02-23	447-289	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MATTOON	IL
2024-02-20	447-288	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC	224C	CHARLESTON	IL
2024-02-16	447-286	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHARLESTON	IL
2024-02-06	447-447	0XXX4XXX7XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	LINCOLN	IL
2024-01-03	447-285	0–9 XXXall 10 · 4 holders which blocks →	COMMIO, LLC	939H	DANVILLE	IL
2023-12-28	447-284	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DANVILLE	IL
2023-12-18	447-283	1XXX8XXX9XXX · 2 holders which blocks →	CALLWORKS CORPORATION	475J	SPRINGFLD	IL
2023-12-01	447-282	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHARLESTON	IL
2023-11-13	447-281	1XXX which blocks →	IP HORIZON LLC	515J	QUINCY	IL
2023-10-20	447-280	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MATTOON	IL
2023-10-13	447-279	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MATTOON	IL
2023-09-21	447-278	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DANVILLE	IL
2023-09-19	447-276	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	DANVILLE	IL
2023-09-14	447-275	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHARLESTON	IL
2023-09-01	447-266	0XXX2XXX6XXX · 3 holders which blocks →	ONVOY, LLC	224C	SADORUS	IL
2023-09-01	447-268	2XXX3XXX · 2 holders which blocks →	ONVOY, LLC	224C	BAYLIS	IL
2023-09-01	447-269	2XXX4XXX · 2 holders which blocks →	ONVOY, LLC	224C	CHAPIN	IL
2023-09-01	447-270	0XXX2XXX3XXX7XXX · 4 holders which blocks →	ONVOY, LLC	224C	FOWLER	IL
2023-09-01	447-271	0XXX2XXX3XXX · 3 holders which blocks →	ONVOY, LLC	224C	LIBERTY	IL
2023-09-01	447-272	2XXX4XXX · 2 holders which blocks →	ONVOY, LLC	224C	FERRIS	IL
2023-09-01	447-273	0XXX2XXX · 2 holders which blocks →	ONVOY, LLC	224C	LOAMI	IL
2023-08-24	447-264	0XXX2XXX3XXX · 3 holders which blocks →	ONVOY, LLC	224C	PAYSON	IL
2023-08-24	447-265	0XXX2XXX3XXX · 3 holders which blocks →	ONVOY, LLC	224C	SEYMOUR	IL
2023-08-17	447-262	0XXX1XXX2XXX3XXX4XXX which blocks →	COMMIO, LLC	939H	FRANKLIN	IL
2023-08-17	447-263	0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 3 holders which blocks →	COMMIO, LLC	939H	WOODSON	IL
2023-08-01	447-261	0XXX1XXX2XXX · 3 holders which blocks →	ONVOY, LLC	224C	PLEASANTPL	IL
2023-07-18	447-259	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MATTOON	IL
2023-07-05	447-258	1XXX which blocks →	CALLWORKS CORPORATION	475J	CHAMPAURBN	IL
2023-06-16	447-256	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHARLESTON	IL
2023-05-22	447-255	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	ALEXANDER	IL
2023-04-20	447-254	0XXX1XXX2XXX4XXX7XXX9XXX · 5 holders which blocks →	NUSO, LLC	732J	ATHENS	IL
2023-03-14	447-253	0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks →	NUSO, LLC	732J	BEARDSTOWN	IL
2023-03-08	447-252	0–9 XXXall 10 · 2 holders which blocks →	HD CARRIER LLC	321J	MATTOON	IL
2023-03-03	447-251	0–9 XXXall 10 · 6 holders which blocks →	NUSO, LLC	732J	DECATUR	IL
2023-02-28	447-250	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHARLESTON	IL
2023-02-16	447-248	9XXX which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	ASHLAND	IL
2023-02-16	447-249	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MATTOON	IL
2023-02-10	447-246	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	732J	DANVILLE	IL
2023-02-08	447-243	0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks →	NUSO, LLC	732J	QUINCY	IL
2023-02-08	447-245	2XXX which blocks →	NUSO, LLC	732J	CHAMPAURBN	IL
2023-02-06	447-217	0–9 XXXall 10 · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	DANVILLE	IL
2023-02-06	447-242	9XXX which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	ELKHART	IL
2022-11-28	447-241	9XXX which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	TAYLORVL	IL
2022-10-03	447-240	0XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LA HARPE	IL
2022-08-23	447-239	1XXX8XXX9XXX · 2 holders which blocks →	PAETEC ITEL, LLC	829J	SPRINGFLD	IL
2022-07-22	447-287	0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	DECATUR	IL
2022-05-04	447-235	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MARSHALL	IL
2022-04-13	447-231	0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks →	COMMIO, LLC	939H	CHATHAM	IL
2022-04-13	447-232	0–9 XXXall 10 · 4 holders which blocks →	COMMIO, LLC	939H	DANVILLE	IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.