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
2026-09-17 225-557 0XXX which blocks → ONVOY, LLC - LA 749E ALBANY LA
2026-09-09 225-550 0XXX which blocks → ONVOY, LLC - LA 749E DENHAM SPG LA
2026-06-12 225-548 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C GONZALES LA
2026-03-04 225-587 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → OPENTACT INC. 824J BATONROUGE LA
2026-02-25 225-580 0XXX8XXX · 2 holders which blocks → WAVENATION, LLC 700J BATONROUGE LA
2025-08-14 225-576 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C BATONROUGE LA
2025-06-06 225-544 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2025-05-12 225-539 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2025-05-12 225-541 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2025-05-01 225-538 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2025-03-20 225-537 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2025-01-24 225-536 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J BATONROUGE LA
2024-06-21 225-518 1XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GONZALES LA
2024-06-21 225-534 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E DENHAM SPG LA
2024-06-07 225-420 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX which blocks → ONVOY, LLC - LA 749E ZACHARY LA
2024-03-29 225-528 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → IP HORIZON LLC 515J LUTCHER LA
2024-03-28 225-393 1XXX which blocks → IP HORIZON LLC 515J TUNICA LA
2024-02-29 225-524 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E CLINTON LA
2024-02-28 225-531 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E SPRINGFLD LA
2024-01-30 225-233 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E DENHAM SPG LA
2023-10-01 225-519 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBANY LA
2023-08-24 225-375 0XXX1XXX2XXX · 3 holders which blocks → ONVOY, LLC - LA 749E ROUGON LA
2023-08-24 225-516 0XXX1XXX2XXX · 3 holders which blocks → ONVOY, LLC - LA 749E CONVENT LA
2023-08-22 225-514 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E LIVINGSTON LA
2023-08-16 225-370 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E PLAQUEMINE LA
2023-08-10 225-345 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → COMMIO, LLC 939H JACKSON LA
2023-08-10 225-365 0XXX1XXX2XXX3XXX4XXX which blocks → COMMIO, LLC 939H GREENSBURG LA
2023-07-28 225-506 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2023-06-01 225-520 0XXX2XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H NO CORNOR LA
2023-04-18 225-515 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J BATONROUGE LA
2023-03-10 225-512 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J BATONROUGE LA
2023-01-20 225-521 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E BATONROUGE LA
2023-01-09 225-509 0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C WH CASTLE LA
2022-11-23 225-501 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 BATONROUGE LA
2022-10-13 225-498 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BATONROUGE LA
2022-10-03 225-497 0–9 XXXall 10 · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2022-09-20 225-496 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 DONALDSNVL LA
2022-09-16 225-495 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BATONROUGE LA
2022-09-09 225-494 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 GONZALES LA
2022-08-24 225-493 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 BATONROUGE LA
2022-08-18 225-491 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2022-07-15 225-422 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H ALBANY LA
2022-04-19 225-285 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H BATONROUGE LA
2022-04-08 225-489 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BATONROUGE LA
2022-03-30 225-482 0XXX2XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 SORRENTO LA
2022-03-30 225-483 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 DONALDSNVL LA
2022-03-21 225-481 0–9 XXXall 10 · 3 holders which blocks → AIRUS, INC. - LA 477H BATONROUGE LA
2022-03-02 225-468 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BATONROUGE LA
2022-01-24 225-477 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J BATONROUGE LA
2022-01-13 225-546 4XXX which blocks → TON80 COMMUNICATIONS, LLC 516J ROSEDALE 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.