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
2014-05-19	505-357	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	ALBUQURQUE	NM
2014-05-19	505-437	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	ALBUQURQUE	NM
2014-04-28	505-492	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ALBUQURQUE	NM
2014-03-10	505-658	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	GRANTS	NM
2014-02-24	505-289	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ALBUQURQUE	NM
2013-12-16	505-267	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ALBUQURQUE	NM
2013-12-11	505-600	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - NM	206F	ALBUQURQUE	NM
2013-11-04	505-596	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	ALBUQURQUE	NM
2013-10-21	505-218	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	ALBUQURQUE	NM
2013-06-27	505-219	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	ALBUQURQUE	NM
2013-05-28	505-278	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	FARMINGTON	NM
2013-04-04	505-373	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	ALBUQURQUE	NM
2013-02-28	505-209	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	GRANTS	NM
2012-11-16	505-398	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	LAS VEGAS	NM
2012-11-13	505-800	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NM	206F	ALBUQURQUE	NM
2012-10-17	505-395	0–9 XXXall 10 · 8 holders which blocks →	NUSO, LLC	551G	SANTA FE	NM
2012-08-17	505-257	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	LOS ALAMOS	NM
2012-08-06	505-448	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - NM	206F	ALBUQURQUE	NM
2012-06-05	505-639	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	ALBUQURQUE	NM
2012-04-09	505-943	0XXX4XXX · 2 holders which blocks →	NAVAJO COMM CO INC NM DBA NAVAJO COMM CO NM	4450	SHIPROCK	NM
2012-02-17	505-354	0XXX1XXX4XXX5XXX8XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	SHIPROCK	NM
2012-02-17	505-422	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CROWNPOINT	NM
2012-01-09	505-434	not yet reported which blocks →	PLATEAU TELECOMMUNICATIONS, INC. - NM	777B	LAS VEGAS	NM
2011-11-02	505-484	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW	1193	ESPANOLA	NM
2011-09-08	505-200	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	ALBUQURQUE	NM
2011-08-30	505-835	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - NM	206F	ALBUQURQUE	NM
2011-07-18	505-388	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	ALBUQURQUE	NM
2011-06-16	505-444	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	AZTEC	NM
2011-06-13	505-226	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	ALBUQURQUE	NM
2011-06-13	505-273	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	ALBUQURQUE	NM
2011-05-26	505-375	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	ALBUQURQUE	NM
2011-05-26	505-386	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	AZTEC	NM
2011-05-10	505-436	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	FARMINGTON	NM
2011-05-10	505-633	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	ALBUQURQUE	NM
2011-05-03	505-253	0–9 XXXwhole prefix which blocks →	LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM	7457	ALBUQURQUE	NM
2011-03-16	505-358	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ALBUQURQUE	NM
2011-01-11	505-377	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	ALBUQURQUE	NM
2010-10-15	505-423	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ESPANOLA	NM
2010-09-27	505-392	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ABIQUIU	NM
2010-08-24	505-399	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	GALLUP	NM
2010-06-14	505-433	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA NM-LLC	450C	ALBUQURQUE	NM
2010-04-26	505-369	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	ALBUQURQUE	NM
2010-04-02	505-393	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	WHITE ROCK	NM
2010-04-02	505-427	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	FARMINGTON	NM
2010-03-23	505-312	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ALBUQURQUE	NM
2010-03-23	505-359	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	ALBUQURQUE	NM
2010-03-19	505-225	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ALBUQURQUE	NM
2010-02-12	505-336	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	ALBUQURQUE	NM
2010-01-13	505-382	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	ALBUQURQUE	NM
2010-01-11	505-635	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	FARMINGTON	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.