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 779

8X8, INC. 2

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 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
2024-03-29	779-392	0XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	OGLESBY	IL
2024-03-29	779-393	0XXX which blocks →	ONVOY SPECTRUM, LLC	624H	WATSEKA	IL
2024-03-29	779-394	0XXX which blocks →	ONVOY SPECTRUM, LLC	624H	WELLINGTON	IL
2024-03-27	779-390	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LOCKPORT	IL
2024-03-22	779-388	0XXX1XXX3XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CRYSTAL LK	IL
2024-03-21	779-387	0XXX1XXX which blocks →	ONVOY, LLC	224C	POPLAR GRV	IL
2024-02-08	779-386	0XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	T-MOBILE USA, INC.	6529	PRINCETON	IL
2024-02-06	779-385	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOMENCE	IL
2024-01-09	779-384	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	T-MOBILE USA, INC.	6529	HARVARD	IL
2023-10-30	779-383	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOMENCE	IL
2023-10-19	779-381	0XXX1XXX2XXX3XXX8XXX9XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	LA SALLE	IL
2023-09-06	779-380	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOMENCE	IL
2023-08-18	779-378	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC	224C	MCHENRY	IL
2023-08-11	779-219	0XXX1XXX2XXX3XXX4XXX which blocks →	COMMIO, LLC	939H	BRAIDWOOD	IL
2023-08-11	779-376	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks →	COMMIO, LLC	939H	GRANT PARK	IL
2023-07-26	779-374	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	JOLIET	IL
2023-07-26	779-375	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JOLIET	IL
2023-07-20	779-372	0XXX1XXX7XXX8XXX · 4 holders which blocks →	T-MOBILE USA, INC.	6529	DIXON	IL
2023-07-20	779-373	0XXX1XXX8XXX9XXX · 2 holders which blocks →	CALLWORKS CORPORATION	475J	ROCKFORD	IL
2023-07-18	779-331	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KANKAKEE	IL
2023-07-18	779-371	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOMENCE	IL
2023-06-21	779-312	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	WOODSTOCK	IL
2023-06-13	779-309	0XXX which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	SO SHARON	IL
2023-06-08	779-224	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOMENCE	IL
2023-05-19	779-217	0–9 XXXall 10 · 4 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	DE KALB	IL
2023-05-03	779-397	2XXX3XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CABERY	IL
2023-04-18	779-370	0XXX1XXX8XXX9XXX · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	ROCKFORD	IL
2023-04-12	779-790	0–9 XXXall 10 · 2 holders which blocks →	COMMIO, LLC	939H	STERLING	IL
2023-03-16	779-369	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOMENCE	IL
2023-03-10	779-367	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NUSO, LLC	732J	SYCAMORE	IL
2023-03-08	779-366	0XXX1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	HD CARRIER LLC	321J	ROCKFORD	IL
2023-02-15	779-365	0–9 XXXall 10 · 4 holders which blocks →	NUSO, LLC	732J	DE KALB	IL
2023-02-08	779-363	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks →	NUSO, LLC	732J	ROCKFORD	IL
2023-02-08	779-364	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	732J	STREATOR	IL
2023-01-19	779-362	7XXX which blocks →	ONVOY, LLC	224C	FAIRBURY	IL
2023-01-03	779-361	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	KANKAKEE	IL
2022-12-29	779-360	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOMENCE	IL
2022-11-15	779-359	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	NUSO, LLC	732J	BELVIDERE	IL
2022-11-08	779-445	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	LOCKPORT	IL
2022-10-18	779-358	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	PLAINFIELD	IL
2022-10-03	779-350	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MOMENCE	IL
2022-04-12	779-357	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LEAF RIVER	IL
2022-03-31	779-353	0XXX1XXX3XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	FORRESTON	IL
2022-03-31	779-354	1XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	DAVIS	IL
2022-03-31	779-355	1XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	HARMON	IL
2022-03-28	779-809	0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks →	METROPCS, INC.	5562	FULTON	IL
2022-03-23	779-463	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MORRIS	IL
2022-02-25	779-351	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	ROCKFORD	IL
2022-02-23	779-625	0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WOODSTOCK	IL
2022-02-14	779-739	7XXX which blocks →	TWILIO INTERNATIONAL, INC.	506J	FORREST	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.