Recent prefix assignments

4 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 254

ONVOY, LLC - TX 4

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
2023-12-21	254-560	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GATESVILLE	TX
2023-12-20	254-557	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	COMMIO, LLC	939H	STRAWN	TX
2023-12-20	254-558	0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks →	COMMIO, LLC	939H	GORDON	TX
2023-11-02	254-551	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KILLEEN	TX
2023-10-17	254-538	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	MARLIN	TX
2023-10-04	254-525	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks →	COMMIO, LLC	939H	LEROY	TX
2023-10-04	254-528	0–9 XXXall 10 · 3 holders which blocks →	COMMIO, LLC	939H	WEST	TX
2023-09-29	254-521	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	KILLEEN	TX
2023-09-15	254-517	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	TEMPLE	TX
2023-08-23	254-516	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	KILLEEN	TX
2023-07-26	254-515	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - TX	903C	AXTELL	TX
2023-07-13	254-508	2XXX which blocks →	ONVOY, LLC - TX	903C	BLUM	TX
2023-07-13	254-513	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - TX	903C	GLEN ROSE	TX
2023-07-11	254-490	0XXX2XXX · 2 holders which blocks →	ONVOY, LLC - TX	903C	HUBBARD	TX
2023-07-11	254-491	2XXX which blocks →	ONVOY, LLC - TX	903C	PRAIRIE HL	TX
2023-07-11	254-497	2XXX3XXX · 2 holders which blocks →	ONVOY, LLC - TX	903C	RIESEL	TX
2023-07-11	254-502	0XXX1XXX2XXX3XXX4XXX8XXX · 3 holders which blocks →	ONVOY, LLC - TX	903C	ROSENTHAL	TX
2023-07-11	254-507	2XXX which blocks →	ONVOY, LLC - TX	903C	LOTT	TX
2023-06-15	254-818	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KILLEEN	TX
2023-05-22	254-325	0–9 XXXall 10 · 3 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	KILLEEN	TX
2023-03-01	254-816	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	KILLEEN	TX
2023-02-16	254-658	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	KILLEEN	TX
2023-02-16	254-737	1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX which blocks →	NUSO, LLC	732J	WACO	TX
2023-01-11	254-514	0XXX2XXX4XXX5XXX · 2 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	BUCKHOLTS	TX
2023-01-06	254-281	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	KILLEEN	TX
2022-12-21	254-574	0XXX1XXX2XXX3XXX5XXX7XXX · 3 holders which blocks →	ONVOY, LLC - TX	903C	SALADO	TX
2022-12-21	254-684	0XXX6XXX which blocks →	ONVOY, LLC - TX	903C	TURNERSVL	TX
2022-11-14	254-302	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NUSO, LLC	732J	COPPERASCV	TX
2022-09-27	254-254	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TX	903C	SALADO	TX
2022-08-05	254-341	0XXX9XXX · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	ITASCA	TX
2022-08-05	254-443	0XXX1XXX2XXX3XXX9XXX · 4 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	GLEN ROSE	TX
2022-07-15	254-264	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	EASTLAND	TX
2022-03-24	254-726	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	GORDON	TX
2022-03-02	254-489	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TX	903C	WACO	TX
2022-02-25	254-864	0XXX1XXX8XXX · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	BRANDON	TX
2022-02-24	254-481	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	BRECKENRDG	TX
2022-02-09	254-885	0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ITASCA	TX
2022-02-04	254-903	0XXX1XXX3XXX6XXX8XXX9XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	RANGER	TX
2022-01-26	254-683	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	KILLEEN	TX
2022-01-14	254-763	8XXX which blocks →	TON80 COMMUNICATIONS, LLC	516J	SIDNEY	TX
2022-01-13	254-783	7XXX which blocks →	TON80 COMMUNICATIONS, LLC	516J	PROCTOR	TX
2022-01-13	254-837	4XXX which blocks →	TON80 COMMUNICATIONS, LLC	516J	EVANT	TX
2021-12-02	254-484	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - TX	903C	MCGREGOR	TX
2021-11-30	254-480	0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	WACO	TX
2021-10-28	254-483	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - TX	903C	TEMPLE	TX
2021-09-20	254-450	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	MARLIN	TX
2021-09-03	254-440	0–9 XXXall 10 · 3 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	STEPHENVL	TX
2021-09-03	254-441	0–9 XXXall 10 · 4 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	KILLEEN	TX
2021-09-03	254-686	0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BEN HUR	TX
2021-09-03	254-844	0XXX1XXX4XXX6XXX7XXX8XXX · 3 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	WACO	TX

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.