Recent prefix assignments

0 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, all time — NPA 505

QWEST CORPORATION 184

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 98

NEW CINGULAR WIRELESS PCS, LLC 77

T-MOBILE USA, INC. 65

ONVOY, LLC - NM 54

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
2021-04-30	505-477	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	SANTA FE	NM
2021-04-29	505-475	0–9 XXXall 10 · 4 holders which blocks →	AT&T - LOCAL	7421	ALBUQURQUE	NM
2021-04-18	505-810	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - NM	206F	ALBUQURQUE	NM
2021-03-12	505-461	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	WHITE ROCK	NM
2021-03-11	505-457	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	GALLUP	NM
2021-03-05	505-418	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	ALBUQURQUE	NM
2021-03-05	505-456	0–9 XXXall 10 · 3 holders which blocks →	IP HORIZON LLC	515J	ALBUQURQUE	NM
2021-02-16	505-394	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	GALLUP	NM
2021-02-03	505-451	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	LAS VEGAS	NM
2020-12-17	505-447	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	GRANTS	NM
2020-11-24	505-446	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FARMINGTON	NM
2020-11-24	505-535	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NM	206F	FARMINGTON	NM
2020-11-12	505-442	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FARMINGTON	NM
2020-10-30	505-397	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	GALLUP	NM
2020-10-23	505-895	0–9 XXXall 10 · 4 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	ALBUQURQUE	NM
2020-10-05	505-441	0–9 XXXall 10 · 5 holders which blocks →	NUSO, LLC	478J	ALBUQURQUE	NM
2020-09-03	505-499	4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	ZUNI	NM
2020-09-03	505-799	5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	VANDERWGON	NM
2020-08-25	505-439	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	AZTEC	NM
2020-07-14	505-416	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	SANTA FE	NM
2020-07-01	505-413	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	GALLUP	NM
2020-07-01	505-430	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	GALLUP	NM
2020-06-04	505-744	2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	FRACTEL, LLC	965H	RAMAH	NM
2020-06-03	505-622	1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	PECOS	NM
2020-06-03	505-677	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	ALBUQURQUE	NM
2020-06-03	505-758	0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	FRACTEL, LLC	965H	PINE HILL	NM
2020-06-02	505-408	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FARMINGTON	NM
2020-06-02	505-533	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	ABIQUIU	NM
2020-06-02	505-932	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	FARMINGTON	NM
2020-05-29	505-376	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	ESPANOLA	NM
2020-04-21	505-396	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	LOS ALAMOS	NM
2020-01-17	505-230	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	SANTA FE	NM
2019-10-22	505-391	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NM	206F	GRANTS	NM
2019-10-21	505-374	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FARMINGTON	NM
2019-09-17	505-364	0–9 XXXall 10 · 5 holders which blocks →	EXIANT COMMUNICATIONS LLC	114J	ALBUQURQUE	NM
2019-07-30	505-403	0–9 XXXall 10 · 5 holders which blocks →	CSC WIRELESS, LLC	425J	ALBUQURQUE	NM
2019-06-26	505-420	0–9 XXXall 10 · 3 holders which blocks →	COMMIO, LLC	939H	ALBUQURQUE	NM
2019-06-20	505-443	0–9 XXXwhole prefix which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	ALBUQURQUE	NM
2019-05-28	505-458	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NM	206F	GALLUP	NM
2019-05-14	505-421	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	FARMINGTON	NM
2019-02-14	505-372	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM	7464	SANTA FE	NM
2019-01-23	505-370	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NM	206F	LAS VEGAS	NM
2019-01-22	505-390	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NM	206F	AZTEC	NM
2018-12-13	505-808	0–9 XXXall 10 · 4 holders which blocks →	TERRA NOVA TELECOM INC.	145J	ALBUQURQUE	NM
2018-12-03	505-522	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	SANTA FE	NM
2018-05-08	505-405	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - NM	206F	OJOCALINTE	NM
2018-05-08	505-502	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	ONVOY, LLC - NM	206F	CHIMAYO	NM
2018-05-08	505-509	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - NM	206F	DIXON	NM
2018-05-07	505-605	2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	TRUCHAS	NM
2018-05-07	505-805	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - NM	206F	VELARDE	NM

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.