Recent prefix assignments

1 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 915

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	915-889	1XXX which blocks →	8X8, INC.	193E	EL PASO	TX
2026-06-16	915-377	2XXX7XXX · 2 holders which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	EL PASO	TX
2026-04-28	915-446	8XXX which blocks →	OPENTACT INC.	824J	CANUTILLO	TX
2026-04-13	915-364	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	HD CARRIER LLC	321J	EL PASO	TX
2026-02-17	915-363	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	EL PASO	TX
2026-01-08	915-362	0–9 XXXall 10 · 4 holders which blocks →	WAVENATION, LLC	700J	EL PASO	TX
2025-11-13	915-438	2XXX which blocks →	AHOI LLC	883K	CANUTILLO	TX
2025-08-22	915-327	9XXX which blocks →	AT&T - LOCAL	7421	CANUTILLO	TX
2025-08-07	915-977	0–9 XXXall 10 · 3 holders which blocks →	TERRA NOVA TELECOM INC.	145J	EL PASO	TX
2025-04-28	915-989	0–9 XXXall 10 · 2 holders which blocks →	HD CARRIER LLC	321J	EL PASO	TX
2025-02-13	915-360	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TX	903C	EL PASO	TX
2025-02-06	915-456	0XXX1XXX2XXX3XXX4XXX · 3 holders which blocks →	ONVOY, LLC - TX	903C	FABENS	TX
2024-11-20	915-359	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	EL PASO	TX
2024-09-26	915-358	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	EL PASO	TX
2024-09-17	915-357	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	VINTON	TX
2024-09-10	915-354	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TX	903C	CLINT	TX
2024-07-10	915-353	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	EL PASO	TX
2024-06-06	915-350	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TX	903C	EL PASO	TX
2023-12-21	915-347	0–9 XXXall 10 · 4 holders which blocks →	COMMIO, LLC	939H	CLINT	TX
2023-12-21	915-349	0–9 XXXall 10 · 2 holders which blocks →	COMMIO, LLC	939H	EL PASO	TX
2023-10-17	915-344	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - TX	903C	EL PASO	TX
2023-09-25	915-343	0–9 XXXall 10 · 2 holders which blocks →	CALLWORKS CORPORATION	475J	EL PASO	TX
2023-09-18	915-341	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	EL PASO	TX
2023-07-05	915-340	0–9 XXXwhole prefix which blocks →	ONVOY SPECTRUM, LLC	624H	EL PASO	TX
2023-02-28	915-339	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	EL PASO	TX
2023-02-16	915-338	0–9 XXXall 10 · 4 holders which blocks →	NUSO, LLC	732J	CLINT	TX
2023-01-13	915-337	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	EL PASO	TX
2022-11-16	915-659	0XXX1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - TX	903C	FT HANCOCK	TX
2022-10-18	915-915	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	EL PASO	TX
2022-10-11	915-312	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2022-09-01	915-318	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - TX	903C	FABENS	TX
2022-08-26	915-335	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	EL PASO	TX
2022-08-12	915-334	0–9 XXXwhole prefix which blocks →	ONVOY SPECTRUM, LLC	624H	EL PASO	TX
2022-08-05	915-310	0XXX9XXX · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	DESERT HVN	TX
2022-07-21	915-332	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2022-06-29	915-306	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	CANUTILLO	TX
2022-04-28	915-299	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2022-02-22	915-297	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	EL PASO	TX
2022-02-09	915-296	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2022-02-04	915-294	0–9 XXXall 10 · 4 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	EL PASO	TX
2022-01-14	915-280	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	EL PASO	TX
2022-01-11	915-293	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TX	903C	CLINT	TX
2021-10-12	915-291	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	EL PASO	TX
2021-09-29	915-290	0–9 XXXall 10 · 4 holders which blocks →	AT&T - LOCAL	7421	VINTON	TX
2021-09-28	915-289	0–9 XXXall 10 · 4 holders which blocks →	NUSO, LLC	478J	EL PASO	TX
2021-09-07	915-499	0–9 XXXall 10 · 3 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	EL PASO	TX
2021-08-24	915-292	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TX	903C	EL PASO	TX
2021-08-20	915-279	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	EL PASO	TX
2021-08-02	915-286	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - TX	903C	CLINT	TX
2021-07-09	915-285	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	VINTON	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.