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 337
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 143
NEW CINGULAR WIRELESS PCS, LLC - GA 98
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 53
PAETEC ITEL, LLC 34
BRIGHTSPEED OF LOUISIANA, LLC 33
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
2002-04-19 337-340 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 MERRYVILLE LA
2002-04-09 337-308 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2002-04-09 337-309 2XXX3XXX4XXX5XXX6XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2002-04-04 337-240 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2002-04-04 337-321 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2002-02-13 337-241 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 JEANERETTE LA
2001-11-20 337-296 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
2001-11-01 337-292 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2001-10-26 337-315 2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2001-10-26 337-780 0XXX4XXX5XXX6XXX7XXX8XXX which blocks → VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2001-10-18 337-256 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2001-10-18 337-258 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2001-09-24 337-248 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 BROUSSARD LA
2001-09-17 337-275 2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JENNINGS LA
2001-09-17 337-290 3XXX4XXX5XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2001-09-17 337-316 4XXX which blocks → METROPCS, INC. 5562 LAFAYETTE LA
2001-08-23 337-255 not yet reported which blocks → VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2001-08-06 337-279 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
2001-06-28 337-257 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2001-06-28 337-274 none assigned yet which blocks → METROPCS, INC. 5562 LK CHARLES LA
2001-06-15 337-254 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2001-06-15 337-287 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SULPHUR LA
2001-06-12 337-312 4XXX6XXX · 2 holders which blocks → LEVEL 3 TELECOM OF LOUISIANA, LLC - LA 7488 LK CHARLES LA
2001-06-12 337-990 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LK CHARLES LA
2001-05-23 337-247 7XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
2001-05-15 337-263 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LK CHARLES LA
2001-04-17 337-322 5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2001-04-11 337-330 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J BROUSSARD LA
2001-03-14 337-246 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JENNINGS LA
2001-03-14 337-251 none assigned yet which blocks → METROPCS, INC. 5562 NEW IBERIA LA
2001-03-09 337-249 7XXX8XXX which blocks → METROPCS, INC. 5562 SWEET LAKE LA
2001-01-31 337-304 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2001-01-09 337-370 7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 JENNINGS LA
— 337-201 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 NEW IBERIA LA
— 337-202 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J DE RIDDER LA
— 337-204 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 337-205 1XXX3XXX5XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
— 337-206 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 OPELOUSAS LA
— 337-207 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
— 337-208 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
— 337-209 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 NEW IBERIA LA
— 337-210 5XXX6XXX7XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
— 337-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX LA
— 337-212 none assigned yet which blocks → METROPCS, INC. 5562 LAFAYETTE LA
— 337-214 3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LK CHARLES LA
— 337-215 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 SULPHUR LA
— 337-216 1XXX5XXX8XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-217 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LK CHARLES LA
— 337-219 not yet reported which blocks → SPOK, INC. 6630 LK CHARLES LA
— 337-220 0XXX1XXX4XXX7XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J TURKEY CRK 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.