NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 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 251
WIDE VOICE, LLC - AL 1
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
2023-06-29 251-453 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - AL 604E CITRONELLE AL
2023-06-06 251-437 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 FOLEY AL
2023-04-18 251-710 0XXX1XXX2XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - AL 604E ATMORE AL
2023-03-24 251-429 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J GRAND BAY AL
2023-03-21 251-334 0XXX2XXX3XXX4XXX which blocks → ONVOY, LLC - AL 604E URIAH AL
2023-02-14 251-427 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 732J FAIRHOPE AL
2023-01-19 251-426 0–9 XXXall 10 · 2 holders which blocks → AIRUS, INC. - AL 476H MOBILE AL
2023-01-04 251-419 0–9 XXXwhole prefix which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 ATMORE AL
2022-09-27 251-251 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - AL 604E JACKSON AL
2022-09-20 251-412 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MCINTOSH AL
2022-09-20 251-413 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 JACKSON AL
2022-09-20 251-416 0XXX1XXX2XXX6XXX8XXX9XXX · 4 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 JACKSON AL
2022-09-01 251-567 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - AL 604E MCINTOSH AL
2022-09-01 251-678 1XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → ONVOY, LLC - AL 604E ATMORE AL
2022-08-31 251-571 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E BAYMINETTE AL
2022-08-25 251-409 0–9 XXXwhole prefix which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 ATMORE AL
2022-08-10 251-407 0–9 XXXall 10 · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 FOLEY AL
2022-08-05 251-399 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E EVERGREEN AL
2022-08-05 251-403 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOLEY AL
2022-06-27 251-396 0–9 XXXall 10 · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2022-06-27 251-398 0–9 XXXwhole prefix which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2022-06-22 251-395 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2022-05-25 251-394 0–9 XXXwhole prefix which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2022-04-18 251-393 0–9 XXXall 10 · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 JACKSON AL
2022-04-14 251-392 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 ATMORE AL
2022-04-11 251-389 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - AL 604E CLEAR SPG AL
2022-03-30 251-552 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E BAYOUBATRE AL
2022-03-30 251-553 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E IRNGTNSTEL AL
2022-03-30 251-556 4XXX5XXX6XXX which blocks → ONVOY, LLC - AL 604E FINCHBURG AL
2022-03-30 251-557 1XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - AL 604E PETERMAN AL
2022-03-28 251-386 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J MOBILE AL
2022-03-09 251-383 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E FAIRHOPE AL
2022-03-09 251-384 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 MOBILE AL
2022-03-09 251-388 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E ATMORE AL
2022-01-19 251-520 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H MOBILE AL
2021-12-03 251-381 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J MOBILE AL
2021-11-18 251-376 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2021-11-16 251-374 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H MOBILE AL
2021-11-04 251-519 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - AL 604E DAUPHIN IS AL
2021-11-04 251-522 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - AL 604E COFFEEVL AL
2021-11-04 251-566 0XXX1XXX5XXX6XXX8XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H GOSPORT AL
2021-10-14 251-505 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H FRISCOCITY AL
2021-10-14 251-606 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H PINE APPLE AL
2021-09-14 251-373 0–9 XXXall 10 · 4 holders which blocks → IP HORIZON LLC 515J MOBILE AL
2021-09-03 251-521 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E GRAND BAY AL
2021-09-03 251-523 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E MT VERNON AL
2021-09-01 251-364 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H JACKSON AL
2021-09-01 251-365 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H CITRONELLE AL
2021-09-01 251-372 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BELLEFONTN AL
2021-08-04 251-361 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL

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.