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
2006-08-24 505-974 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2006-08-15 505-567 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 GALLUP NM
2006-08-04 505-227 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2006-06-29 505-917 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2006-06-28 505-918 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2006-05-17 505-702 0–9 XXXall 10 · 4 holders which blocks → FASTTRACK COMMUNICATIONS, INC. - NM 868G ALBUQURQUE NM
2006-05-01 505-903 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2006-04-24 505-999 0–9 XXXall 10 · 4 holders which blocks → QWEST CORPORATION 9636 ALBUQURQUE NM
2006-03-24 505-515 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NM 206F ALBUQURQUE NM
2006-02-07 505-516 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 FARMINGTON NM
2005-12-14 505-901 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ESPANOLA NM
2005-12-12 505-614 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MESCALERO APACHE TELECOM, INC. - NM 661D ESPANOLA NM
2005-12-12 505-919 7XXX8XXX9XXX · 3 holders which blocks → MESCALERO APACHE TELECOM, INC. - NM 661D SANTA FE NM
2005-10-05 505-608 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 FARMINGTON NM
2005-09-01 505-803 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2005-08-29 505-809 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 SHIPROCK NM
2005-08-03 505-801 3XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2005-06-07 505-701 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 FARMINGTON NM
2005-03-09 505-210 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ABIQUIU NM
2005-03-08 505-419 6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AZTEC NM
2004-11-18 505-205 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2004-11-11 505-407 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2004-08-05 505-404 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 TELECOM OF NEW MEXICO, LLC - NM 7457 ALBUQURQUE NM
2004-07-08 505-406 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 SHIPROCK NM
2004-07-08 505-713 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 GALLUP NM
2003-11-13 505-553 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 ALBUQURQUE NM
2003-10-24 505-947 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2003-10-08 505-593 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 GALLUP NM
2003-07-30 505-606 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9636 LOS ALAMOS NM
2003-06-24 505-709 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 WHITE ROCK NM
2002-12-09 505-686 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 FARMINGTON NM
2002-11-20 505-793 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2002-11-18 505-612 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 SHIPROCK NM
2002-09-17 505-705 1XXX3XXX6XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2002-09-05 505-617 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NM
2002-05-09 505-716 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 FARMINGTON NM
2002-04-19 505-795 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 SANTA FE NM
2002-03-20 505-692 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → METROPCS, INC. 5562 ESPANOLA NM
2002-03-20 505-718 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NM
2001-12-18 505-712 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2001-12-18 505-818 6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2001-10-12 505-804 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2001-10-12 505-907 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2001-09-21 505-215 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2001-08-15 505-400 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2001-08-15 505-417 none assigned yet which blocks → T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2001-08-15 505-715 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NM 5470 ALBUQURQUE NM
2001-05-14 505-306 none assigned yet which blocks → T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2001-05-14 505-307 7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 ALBUQURQUE NM
2001-05-14 505-409 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 GALLUP 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.