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 219

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1

ONVOY, LLC - IN 1

NEW CINGULAR WIRELESS PCS, LLC - 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
2026-09-04	219-437	5XXX which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	LA PORTE	IN
2026-09-02	219-430	0XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2026-08-21	219-429	0XXX1XXX2XXX which blocks →	ONVOY, LLC - IN	097D	HIGHLAND	IN
2026-06-18	219-428	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2026-06-01	219-425	0XXX1XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - IN	097D	LA PORTE	IN
2026-04-24	219-423	0XXX1XXX9XXX which blocks →	ONVOY, LLC - IN	097D	CHESTERTON	IN
2026-01-30	219-422	0XXX1XXX which blocks →	ONVOY, LLC - IN	097D	RENSSELAER	IN
2025-12-05	219-410	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2025-11-12	219-420	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2025-11-12	219-421	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2025-10-16	219-418	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2025-06-09	219-417	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2025-06-02	219-416	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2025-05-22	219-260	0XXX1XXX2XXX3XXX7XXX9XXX · 4 holders which blocks →	LEAP TELECOM, LLC	616J	MICHIGANCY	IN
2025-03-13	219-414	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	GARY	IN
2025-03-13	219-415	0XXX1XXX which blocks →	ONVOY, LLC - IN	097D	ST JOHN	IN
2025-01-22	219-412	0XXX1XXX8XXX which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	DEMOTTE	IN
2025-01-08	219-409	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - IN	097D	VALPARAISO	IN
2024-12-27	219-408	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HAMMOND	IN
2024-12-13	219-403	0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - IN	097D	CEDAR LAKE	IN
2024-12-13	219-404	0XXX4XXX · 2 holders which blocks →	ONVOY, LLC - IN	097D	LOWELL	IN
2024-12-02	219-396	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2024-09-09	219-389	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	PORTAGE	IN
2024-08-30	219-387	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2024-08-21	219-385	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	HAMMOND	IN
2024-06-26	219-383	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2024-06-11	219-382	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2024-04-30	219-377	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	E CHICAGO	IN
2024-03-15	219-376	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GARY	IN
2024-02-29	219-375	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - IN	097D	MERRILLVL	IN
2024-02-21	219-372	0XXX which blocks →	ONVOY, LLC - IN	097D	WHITING	IN
2024-02-09	219-368	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	HAMMOND	IN
2024-02-09	219-371	8XXX9XXX which blocks →	T-MOBILE USA, INC.	6529	HEBRON	IN
2024-02-08	219-367	0XXX1XXX2XXX4XXX8XXX9XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	MICHIGANCY	IN
2024-01-18	219-366	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	GARY	IN
2024-01-02	219-357	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - IN	097D	ST JOHN	IN
2024-01-02	219-358	0–9 XXXall 10 · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	HOBART	IN
2024-01-02	219-360	0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - IN	097D	DYER	IN
2024-01-02	219-361	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	CROWNPOINT	IN
2023-12-28	219-352	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - IN	097D	HIGHLAND	IN
2023-12-28	219-353	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	ONVOY, LLC - IN	097D	VALPARAISO	IN
2023-12-13	219-350	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	PORTAGE	IN
2023-11-29	219-349	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MERRILLVL	IN
2023-09-12	219-347	0XXX1XXX2XXX3XXX4XXX which blocks →	COMMIO, LLC	939H	ROLLNGPRRI	IN
2023-08-31	219-346	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	LA PORTE	IN
2023-08-22	219-343	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GARY	IN
2023-07-26	219-341	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	E CHICAGO	IN
2023-07-13	219-340	0XXX2XXX · 2 holders which blocks →	ONVOY, LLC - IN	097D	MEDARYVL	IN
2023-07-12	219-339	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - IN	097D	HAMMOND	IN
2023-06-22	219-337	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - IN	097D	MERRILLVL	IN

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.