NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

2 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 225
ONVOY, LLC - LA 2
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
2011-06-20 225-249 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2011-04-15 225-220 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2011-04-15 225-428 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BATONROUGE LA
2011-04-12 225-399 0–9 XXXall 10 · 5 holders which blocks → RESERVE LONG DIST CO DBA RESERVE TELECOMM - LA 3610 CONVENT LA
2011-03-07 225-402 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DUTCH TOWN LA
2011-02-07 225-452 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C MORGANZA LA
2011-01-31 225-600 6XXX9XXX · 2 holders which blocks → ADVANCED TEL., INC. - LA 8839 MAUREPAS LA
2010-07-12 225-299 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BATONROUGE LA
2010-03-03 225-444 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J BATONROUGE LA
2010-02-17 225-347 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 TELECOM OF LOUISIANA, LLC - LA 7488 DENHAM SPG LA
2009-11-30 225-417 0–9 XXXall 10 · 8 holders which blocks → AT&T ENTERPRISES, LLC 516C LUTCHER LA
2009-11-04 225-394 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BATONROUGE LA
2009-11-02 225-371 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2009-10-20 225-532 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBANY LA
2009-04-29 225-400 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J BATONROUGE LA
2009-04-23 225-726 0–9 XXXall 10 · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C BATONROUGE LA
2009-03-26 225-374 0–9 XXXall 10 · 2 holders which blocks → CENTURYLINK COMMUNICATIONS LLC - LA 7637 BATONROUGE LA
2009-02-24 225-372 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C BATONROUGE LA
2009-02-19 225-361 0–9 XXXall 10 · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2008-12-04 225-310 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JACKSON LA
2008-11-26 225-283 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LIVINGSTON LA
2008-06-17 225-384 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F BATONROUGE LA
2008-06-13 225-290 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DUTCH TOWN LA
2008-04-30 225-369 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C DENHAM SPG LA
2008-01-31 225-364 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2008-01-14 225-366 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BATONROUGE LA
2007-06-23 225-200 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2007-06-18 225-436 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BATONROUGE LA
2007-05-15 225-448 0–9 XXXall 10 · 5 holders which blocks → HUNT TELECOMMUNICATIONS, LLC - LA 181D BATONROUGE LA
2007-02-01 225-213 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BATONROUGE LA
2006-10-05 225-414 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K SPRINGFLD LA
2006-05-12 225-330 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS LLC - LA 7637 BATONROUGE LA
2006-05-04 225-788 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DENHAM SPG LA
2006-03-27 225-678 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BATONROUGE LA
2006-01-30 225-590 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
2006-01-30 225-993 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2006-01-18 225-454 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2006-01-18 225-588 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2006-01-18 225-663 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2006-01-18 225-747 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2005-12-19 225-333 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2005-12-19 225-456 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2005-12-19 225-636 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2005-12-06 225-733 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2005-10-28 225-302 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2005-10-27 225-309 not yet reported which blocks → PAETEC ITEL, LLC 829J PLAQUEMINE LA
2005-10-21 225-362 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2005-10-21 225-439 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2005-10-05 225-650 0–9 XXXall 10 · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2005-06-13 225-435 0–9 XXXall 10 · 8 holders which blocks → PAETEC ITEL, LLC 829J LIVINGSTON 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.