Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 380

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
2026-09-16	380-880	1XXX which blocks →	8X8, INC.	193E	COLUMBUS	OH
2026-08-20	380-302	0XXX9XXX · 2 holders which blocks →	ONVOY, LLC - OH	464C	REYNOLDSBG	OH
2026-07-20	380-301	0XXX7XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLUMBUS	OH
2026-05-22	380-299	6XXX which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	PLAIN CITY	OH
2026-05-08	380-298	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	COLUMBUS	OH
2026-04-08	380-297	0XXX1XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - OH	464C	DUBLIN	OH
2026-02-05	380-312	0–9 XXXall 10 · 4 holders which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	COLUMBUS	OH
2026-01-27	380-296	0XXX1XXX7XXX8XXX9XXX which blocks →	ONVOY, LLC - OH	464C	NEW ALBANY	OH
2026-01-13	380-295	0XXX which blocks →	ONVOY, LLC - OH	464C	COLUMBUS	OH
2025-12-31	380-294	8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLUMBUS	OH
2025-11-24	380-293	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OH	464C	GAHANNA	OH
2025-11-04	380-292	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - OH	464C	GROVE CITY	OH
2025-10-15	380-291	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - OH	464C	COLUMBUS	OH
2025-09-25	380-290	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	REYNOLDSBG	OH
2025-08-27	380-380	0–9 XXXall 10 · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	COLUMBUS	OH
2025-08-13	380-289	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - OH	464C	REYNOLDSBG	OH
2025-06-11	380-998	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	COLUMBUS	OH
2025-04-15	380-288	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - OH	464C	WESTERVL	OH
2025-02-13	380-287	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	COLUMBUS	OH
2025-01-09	380-286	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - OH	464C	COLUMBUS	OH
2024-10-31	380-285	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	COLUMBUS	OH
2024-09-30	380-284	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	WORTHINGTN	OH
2024-08-23	380-283	0–9 XXXall 10 · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	COLUMBUS	OH
2024-08-16	380-281	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLUMBUS	OH
2024-07-03	380-279	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	WESTERVL	OH
2024-06-27	380-278	0–9 XXXall 10 · 3 holders which blocks →	WIRETAP TELECOM, LLC.	733J	COLUMBUS	OH
2024-06-26	380-277	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HILLIARD	OH
2024-04-12	380-276	0–9 XXXall 10 · 5 holders which blocks →	CALLWORKS CORPORATION	475J	COLUMBUS	OH
2024-03-21	380-275	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OH	464C	LOCKBOURNE	OH
2024-03-05	380-273	0–9 XXXall 10 · 4 holders which blocks →	COMMIO, LLC	939H	REYNOLDSBG	OH
2024-03-05	380-274	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	COMMIO, LLC	939H	ALTON	OH
2024-02-23	380-282	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	COLUMBUS	OH
2024-02-20	380-272	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	PLAIN CITY	OH
2024-02-12	380-270	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	GROVE CITY	OH
2024-02-12	380-271	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - OH	464C	WORTHINGTN	OH
2024-01-25	380-269	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DUBLIN	OH
2024-01-03	380-267	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLUMBUS	OH
2023-09-28	380-266	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	COLUMBUS	OH
2023-09-01	380-264	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - OH	464C	REYNOLDSBG	OH
2023-08-18	380-262	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	HILLIARD	OH
2023-08-18	380-263	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - OH	464C	CANALWHSTR	OH
2023-08-09	380-261	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DUBLIN	OH
2023-06-22	380-268	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - OH	464C	COLUMBUS	OH
2023-06-14	380-456	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	COLUMBUS	OH
2023-06-14	380-457	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	COLUMBUS	OH
2023-06-14	380-458	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	COLUMBUS	OH
2023-06-14	380-459	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	COLUMBUS	OH
2023-06-14	380-460	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	COLUMBUS	OH
2023-03-07	380-260	0–9 XXXall 10 · 4 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	COLUMBUS	OH
2023-02-21	380-259	0–9 XXXall 10 · 6 holders which blocks →	NUSO, LLC	732J	WESTERVL	OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.