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
— 225-389 6XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BATONROUGE LA
— 225-391 not yet reported which blocks → EAST ASCENSION TELEPHONE COMPANY, LLC 0429 GONZALES LA
— 225-397 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BATONROUGE LA
— 225-404 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 225-405 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
— 225-406 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F BATONROUGE LA
— 225-408 9XXX which blocks → ADVANCED TEL., INC. - LA 8839 BATONROUGE LA
— 225-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX LA
— 225-412 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
— 225-413 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
— 225-423 0XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K FRENCHSMNT LA
— 225-425 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELNYX LLC 073H NEW ROADS LA
— 225-426 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 225-440 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 225-445 8XXX9XXX · 2 holders which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
— 225-450 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J GONZALES LA
— 225-460 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 GREENSBURG LA
— 225-473 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DONALDSNVL LA
— 225-474 5XXX7XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 DONALDSNVL LA
— 225-478 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J BATONROUGE LA
— 225-484 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H LIVINGSTON LA
— 225-485 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
— 225-490 not yet reported which blocks → CENTURYLINK COMMUNICATIONS LLC - LA 7637 BATONROUGE LA
— 225-492 not yet reported which blocks → STAR TEL. CO., INC. 0441 INNIS LA
— 225-499 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BATONROUGE LA
— 225-500 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E ALBANY LA
— 225-504 not yet reported which blocks → LA
— 225-505 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
— 225-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX LA
— 225-517 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H ST GABRIEL LA
— 225-522 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 CLINTON LA
— 225-526 none assigned yet which blocks → CENTURYLINK COMMUNICATIONS LLC - LA 7637 BATONROUGE LA
— 225-527 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 732J DENHAM SPG LA
— 225-530 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 225-535 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 STFRNCISVL LA
— 225-545 1XXX6XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 WH CASTLE LA
— 225-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST LA
— 225-558 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J SORRENTO LA
— 225-562 2XXX4XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CONVENT LA
— 225-567 8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ALBANY LA
— 225-571 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
— 225-572 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
— 225-573 5XXX6XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
— 225-578 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BATONROUGE LA
— 225-601 not yet reported which blocks → LA
— 225-603 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
— 225-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX LA
— 225-612 9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 BATONROUGE LA
— 225-614 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 BATONROUGE LA
— 225-615 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BATONROUGE 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.