NumberResearch Membership · Data 09/19/2026

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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2009-09-09 505-274 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2009-08-03 505-234 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2009-07-14 505-201 0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - NM 206F SANTA FE NM
2009-07-14 505-202 0XXX2XXX4XXX5XXX7XXX · 4 holders which blocks → ONVOY, LLC - NM 206F GALLUP NM
2009-07-14 505-233 3XXX which blocks → ONVOY, LLC - NM 206F GRANTS NM
2009-07-14 505-276 7XXX which blocks → ONVOY, LLC - NM 206F LAS VEGAS NM
2009-07-14 505-279 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - NM 206F FARMINGTON NM
2009-03-11 505-236 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 GALLUP NM
2009-03-11 505-258 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 FARMINGTON NM
2009-02-24 505-659 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2008-11-03 505-569 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2008-10-21 505-431 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2008-09-15 505-697 0–9 XXXall 10 · 2 holders which blocks → QWEST CORPORATION 9636 ALBUQURQUE NM
2008-09-02 505-717 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NM 206F ALBUQURQUE NM
2008-08-13 505-560 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NM 206F FENCE LAKE NM
2008-08-13 505-591 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NM 206F VANDERWGON NM
2008-08-13 505-594 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NM 206F PINE HILL NM
2008-08-13 505-657 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NM 206F PECOS NM
2008-08-13 505-806 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NM 206F RAMAH NM
2008-08-13 505-871 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NM 206F ZUNI NM
2008-06-25 505-652 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NM
2008-06-12 505-510 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2008-05-29 505-886 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2008-05-29 505-926 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2008-05-21 505-787 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2008-05-14 505-750 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F ALBUQURQUE NM
2008-03-17 505-435 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2008-03-14 505-504 0–9 XXXall 10 · 4 holders which blocks → VALUTEL COMMUNICATIONS, INC. - NM 9658 ALBUQURQUE NM
2008-02-15 505-503 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2008-01-02 505-990 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NM 206F ALBUQURQUE NM
2007-10-09 505-206 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2007-09-04 505-414 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2007-08-22 505-905 not yet reported which blocks → SACRED WIND COMMUNICATIONS, INC. 340E GALLUP NM
2007-08-22 505-960 not yet reported which blocks → SACRED WIND COMMUNICATIONS, INC. 340E FARMINGTON NM
2007-08-22 505-972 none assigned yet which blocks → SACRED WIND COMMUNICATIONS, INC. 340E GRANTS NM
2007-06-22 505-340 0–9 XXXall 10 · 5 holders which blocks → ZIPPYTECH OF NEW MEXICO INCORPORATED - NM 473E ALBUQURQUE NM
2007-06-08 505-383 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9636 ALBUQURQUE NM
2007-05-24 505-506 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2007-05-09 505-906 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 GALLUP NM
2007-03-20 505-554 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2007-03-20 505-728 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 GALLUP NM
2007-03-16 505-967 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2007-03-02 505-592 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 FARMINGTON NM
2007-02-23 505-609 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2007-01-30 505-948 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2006-12-05 505-916 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J ALBUQURQUE NM
2006-11-22 505-807 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NM 206F ALBUQURQUE NM
2006-11-14 505-508 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J ALBUQURQUE NM
2006-11-09 505-908 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2006-08-29 505-283 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9636 ALBUQURQUE 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.