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
2022-01-13 225-566 0XXX5XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MARINGOUIN LA
2022-01-13 225-832 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEW ROADS LA
2022-01-13 225-837 0XXX1XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MORGANZA LA
2022-01-07 225-476 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 BATONROUGE LA
2021-12-30 225-472 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2021-12-14 225-471 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 LUTCHER LA
2021-11-23 225-469 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BATONROUGE LA
2021-10-20 225-340 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WILSON LA
2021-10-20 225-350 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H JACKSON LA
2021-10-20 225-463 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H ST GABRIEL LA
2021-10-20 225-464 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H LIVINGSTON LA
2021-10-20 225-466 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H STFRNCISVL LA
2021-10-20 225-487 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H VACHERIE LA
2021-10-08 225-462 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 DONALDSNVL LA
2021-10-04 225-459 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 GONZALES LA
2021-09-29 225-321 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GREENSBURG LA
2021-09-29 225-458 0XXX1XXX2XXX3XXX8XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MONTPELIER LA
2021-09-16 225-895 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J BATONROUGE LA
2021-08-25 225-846 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GONZALES LA
2021-08-20 225-568 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SORRENTO LA
2021-07-02 225-457 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F CLINTON LA
2021-06-14 225-453 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F DENHAM SPG LA
2021-04-21 225-575 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GALVEZ LA
2021-04-14 225-903 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BATONROUGE LA
2021-04-01 225-409 0–9 XXXall 10 · 2 holders which blocks → IP HORIZON LLC 515J BATONROUGE LA
2021-03-03 225-586 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PLAQUEMINE LA
2021-03-03 225-592 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ZACHARY LA
2021-02-24 225-327 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E LUTCHER LA
2021-02-24 225-451 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E ZACHARY LA
2021-02-24 225-455 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E PLAQUEMINE LA
2021-02-24 225-488 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E ST GABRIEL LA
2021-02-24 225-533 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E VACHERIE LA
2021-02-01 225-479 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E SPRINGFLD LA
2021-01-28 225-525 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E ROUGON LA
2020-08-26 225-449 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C GONZALES LA
2020-07-24 225-563 2XXX3XXX6XXX7XXX8XXX9XXX which blocks → TON80 COMMUNICATIONS, LLC 516J INNIS LA
2020-06-09 225-569 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J TUNICA LA
2020-06-02 225-441 0–9 XXXall 10 · 2 holders which blocks → CSC WIRELESS, LLC 425J BATONROUGE LA
2020-05-26 225-547 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CONVENT LA
2020-03-23 225-446 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBANY LA
2020-01-14 225-437 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WH CASTLE LA
2019-12-13 225-577 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BATONROUGE LA
2019-11-05 225-433 0–9 XXXall 10 · 4 holders which blocks → EXIANT COMMUNICATIONS LLC 114J BATONROUGE LA
2019-09-03 225-877 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J BATONROUGE LA
2019-08-23 225-254 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F WILSON LA
2019-05-23 225-432 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H BATONROUGE LA
2019-04-22 225-431 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GALVEZ LA
2019-03-04 225-825 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E NO CORNOR LA
2018-11-13 225-269 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F TUNICA LA
2018-11-13 225-430 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F DONALDSNVL 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.