Recent prefix assignments

2 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 309

ONVOY, LLC 1

AHOI LLC 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
2021-10-05	309-618	8XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GALVA	IL
2021-10-05	309-904	4XXX which blocks →	ONVOY, LLC	224C	JOY	IL
2021-10-05	309-905	5XXX which blocks →	ONVOY, LLC	224C	NEW BOSTON	IL
2021-10-05	309-908	0XXX8XXX · 2 holders which blocks →	ONVOY, LLC	224C	WASHBURN	IL
2021-10-05	309-915	0XXX5XXX6XXX · 2 holders which blocks →	ONVOY, LLC	224C	TREMONT	IL
2021-09-20	309-902	0–9 XXXall 10 · 4 holders which blocks →	UNITED STATES CELLULAR - IL	6265	PEKIN	IL
2021-09-16	309-901	9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LITTLETON	IL
2021-09-01	309-891	8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KNOXVILLE	IL
2021-08-25	309-500	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SUMMUM	IL
2021-08-25	309-591	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LA FAYETTE	IL
2021-08-25	309-890	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	VICTORIA	IL
2021-08-05	309-260	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	BLOOMINGTN	IL
2021-07-28	309-384	0XXX3XXX4XXX5XXX · 3 holders which blocks →	ONVOY, LLC	224C	EDELSTEIN	IL
2021-06-24	309-223	0XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks →	ONVOY, LLC	224C	NORTHPEKIN	IL
2021-06-24	309-225	2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks →	ONVOY, LLC	224C	KEITHSBURG	IL
2021-06-23	309-882	0XXX7XXX · 2 holders which blocks →	TELNYX LLC	073H	CANTON	IL
2021-05-19	309-880	0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 7 holders which blocks →	HD CARRIER LLC	321J	IPAVA	IL
2021-04-30	309-630	0XXX6XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NOHENDERSN	IL
2021-04-30	309-910	0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC	224C	EDGINGTON	IL
2021-04-18	309-983	3XXX8XXX · 2 holders which blocks →	ONVOY, LLC	224C	ELLSWORTH	IL
2021-04-18	309-993	2XXX3XXX4XXX7XXX · 3 holders which blocks →	ONVOY, LLC	224C	ARROWSMITH	IL
2021-04-16	309-881	not yet reported which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	INDUSTRY	IL
2021-04-12	309-217	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	PEKIN	IL
2021-04-02	309-892	0XXX1XXX8XXX9XXX · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	PEORIA	IL
2021-03-18	309-870	0XXX1XXX2XXX3XXX · 4 holders which blocks →	STRATUS NETWORKS	495J	CROPSEY	IL
2021-03-18	309-878	0XXX1XXX2XXX3XXX7XXX8XXX · 5 holders which blocks →	STRATUS NETWORKS	495J	COOKSVILLE	IL
2021-03-04	309-860	9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MAQUON	IL
2021-02-02	309-858	1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks →	STRATUS NETWORKS	495J	BIGGSVILLE	IL
2021-02-02	309-859	1XXX3XXX5XXX9XXX · 3 holders which blocks →	STRATUS NETWORKS	495J	GULFPORT	IL
2021-01-11	309-850	0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	ILLINOISCY	IL
2020-11-20	309-841	0XXX1XXX8XXX · 3 holders which blocks →	STRATUS NETWORKS	495J	ELIZA	IL
2020-09-30	309-835	0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 4 holders which blocks →	IP HORIZON LLC	515J	PEORIA	IL
2020-09-18	309-816	1XXX6XXX7XXX · 2 holders which blocks →	IP HORIZON LLC	515J	MONMOUTH	IL
2020-09-17	309-804	1XXX4XXX · 2 holders which blocks →	STRATUS NETWORKS	495J	SEATON	IL
2020-09-17	309-805	1XXX5XXX · 2 holders which blocks →	STRATUS NETWORKS	495J	RIO	IL
2020-09-17	309-806	0XXX1XXX3XXX9XXX · 3 holders which blocks →	STRATUS NETWORKS	495J	LITTLEYORK	IL
2020-09-17	309-812	0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks →	STRATUS NETWORKS	495J	CARLOCK	IL
2020-09-17	309-813	1XXX8XXX · 2 holders which blocks →	STRATUS NETWORKS	495J	BELLFLOWER	IL
2020-08-13	309-803	1XXX2XXX6XXX7XXX · 2 holders which blocks →	NUSO, LLC	478J	CANTON	IL
2020-08-11	309-802	0XXX1XXX8XXX9XXX · 4 holders which blocks →	HD CARRIER LLC	321J	PEORIA	IL
2020-07-28	309-773	1XXX2XXX3XXX7XXX · 3 holders which blocks →	STRATUS NETWORKS	495J	HAMPTON	IL
2020-07-22	309-719	1XXX8XXX · 2 holders which blocks →	STRATUS NETWORKS	495J	GALESBURG	IL
2020-07-15	309-718	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	STRATUS NETWORKS	495J	BLOOMINGTN	IL
2020-07-14	309-709	1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks →	STRATUS NETWORKS	495J	MANITO	IL
2020-07-10	309-632	0–9 XXXall 10 · 7 holders which blocks →	STRATUS NETWORKS	495J	DELAVAN	IL
2020-07-10	309-638	1XXX8XXX · 2 holders which blocks →	STRATUS NETWORKS	495J	GALVA	IL
2020-07-10	309-656	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	STRATUS NETWORKS	495J	SOUTHPEKIN	IL
2020-07-10	309-701	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	STRATUS NETWORKS	495J	SPRING BAY	IL
2020-07-10	309-704	0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 5 holders which blocks →	STRATUS NETWORKS	495J	TRIVOLI	IL
2020-07-08	309-619	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	STRATUS NETWORKS	495J	CHILLICOTH	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.