NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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
— 337-267 0XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-268 0XXX1XXX2XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-269 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-271 not yet reported which blocks → SPOK, INC. 6630 LAFAYETTE LA
— 337-272 1XXX6XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-273 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-276 8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JEANERETTE LA
— 337-277 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
— 337-278 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
— 337-280 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
— 337-285 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J KAPLAN LA
— 337-286 1XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LEESVILLE LA
— 337-288 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
— 337-289 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-291 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-293 not yet reported which blocks → SPOK, INC. 6630 LAFAYETTE LA
— 337-294 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-295 1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-297 not yet reported which blocks → SPOK, INC. 6630 LAFAYETTE LA
— 337-298 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
— 337-299 not yet reported which blocks → SPOK, INC. 6630 LAFAYETTE LA
— 337-302 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
— 337-303 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
— 337-310 not yet reported which blocks → LEVEL 3 TELECOM OF LOUISIANA, LLC - LA 7488 LK CHARLES LA
— 337-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX LA
— 337-314 not yet reported which blocks → PAETEC ITEL, LLC 829J LAFAYETTE LA
— 337-319 none assigned yet which blocks → METROPCS, INC. 5562 LAFAYETTE LA
— 337-328 not yet reported which blocks → ELIZABETH TEL. CO. 0430 SUGARTOWN LA
— 337-332 not yet reported which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 BREAUX BDG LA
— 337-334 1XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 RAYNE LA
— 337-344 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
— 337-349 6XXX7XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
— 337-351 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
— 337-359 2XXX4XXX5XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEW IBERIA LA
— 337-360 not yet reported which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 VL PLATTE LA
— 337-363 not yet reported which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 VL PLATTE LA
— 337-364 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEW IBERIA LA
— 337-365 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEW IBERIA LA
— 337-367 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEW IBERIA LA
— 337-369 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEW IBERIA LA
— 337-373 7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEW IBERIA LA
— 337-374 2XXX6XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEW IBERIA LA
— 337-380 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
— 337-383 3XXX4XXX5XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LEESVILLE LA
— 337-386 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H DE QUINCY LA
— 337-392 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LEESVILLE LA
— 337-394 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 STMARTINVL LA
— 337-402 not yet reported which blocks → HUNT TELECOMMUNICATIONS, LLC - LA 181D LAFAYETTE LA
— 337-403 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HAYES LA
— 337-404 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LEESVILLE LA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.