NumberResearch Membership · Data 09/19/2026

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 504
WIDE VOICE, LLC - LA 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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2005-11-18 504-758 0–9 XXXall 10 · 3 holders which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2005-10-20 504-312 0–9 XXXall 10 · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
2005-08-11 504-335 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J NEWORLEANS LA
2005-07-20 504-306 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF LOUISIANA, LLC - LA 7488 KENNER LA
2005-07-13 504-377 0–9 XXXall 10 · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
2005-04-18 504-570 0–9 XXXall 10 · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
2005-04-18 504-872 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J NEWORLEANS LA
2005-03-24 504-526 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF LOUISIANA, LLC - LA 7488 NEWORLEANS LA
2005-02-08 504-875 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2004-01-27 504-285 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NEWORLEANS LA
2003-10-30 504-910 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NEWORLEANS LA
2003-05-22 504-274 0–9 XXXall 10 · 3 holders which blocks → XFONE USA, INC. - LA 771A NEWORLEANS LA
2002-05-23 504-303 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 KENNER LA
2002-05-20 504-234 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2002-04-30 504-520 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2002-04-17 504-419 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JESUITBEND LA
2002-04-08 504-266 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
2002-03-14 504-920 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2002-03-12 504-329 4XXX5XXX8XXX9XXX which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2002-01-17 504-292 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2001-11-15 504-939 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2001-11-13 504-496 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J KENNER LA
2001-10-30 504-261 not yet reported which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2001-10-30 504-339 not yet reported which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2001-10-30 504-975 not yet reported which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2001-10-26 504-982 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2001-10-18 504-952 1XXX2XXX3XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2001-10-16 504-906 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2001-10-02 504-994 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2001-08-24 504-338 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2001-08-24 504-931 not yet reported which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2001-05-29 504-810 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2001-03-26 504-756 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2001-02-23 504-909 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2001-02-09 504-715 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2001-01-25 504-717 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NEWORLEANS LA
— 504-200 7XXX which blocks → PAETEC ITEL, LLC 829J NEWORLEANS LA
— 504-201 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KENNER LA
— 504-202 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → AT&T - LOCAL 7421 NEWORLEANS LA
— 504-204 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 504-207 not yet reported which blocks → PAETEC ITEL, LLC 829J NEWORLEANS LA
— 504-208 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NEWORLEANS LA
— 504-210 5XXX6XXX7XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NEWORLEANS LA
— 504-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX LA
— 504-212 not yet reported which blocks → PAETEC ITEL, LLC 829J NEWORLEANS LA
— 504-213 not yet reported which blocks → SPOK, INC. 6630 NEWORLEANS LA
— 504-214 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
— 504-216 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 KENNER LA
— 504-218 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWORLEANS LA
— 504-219 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA

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.