NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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, all time — NPA 409
SOUTHWESTERN BELL 142
NEW CINGULAR WIRELESS PCS, LLC - IL 50
ONVOY, LLC - TX 37
AERIAL COMMUNICATIONS, INC. 28
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 26
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
2022-09-28 409-409 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C FANNETT TX
2022-09-07 409-297 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NDLDPTNCHS TX
2022-09-01 409-295 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C GALVESTON TX
2022-08-23 409-294 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K JASPER TX
2022-08-09 409-490 0XXX1XXX9XXX · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J ANAHUAC TX
2022-02-22 409-546 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PORTARTHUR TX
2022-02-16 409-335 0XXX1XXX3XXX5XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BURKEVILLE TX
2022-02-16 409-426 1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J COLMESNEIL TX
2022-02-16 409-742 0XXX1XXX2XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SOUTHVIDOR TX
2022-02-15 409-327 0XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LA BELLE TX
2022-02-14 409-301 1XXX which blocks → TWC IP ENABLED SERVICES, LLC 793K NOME TX
2022-01-25 409-894 8XXX which blocks → TWILIO INTERNATIONAL, INC. 506J BEAUMONT TX
2021-12-03 409-285 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C WOODVILLE TX
2021-11-17 409-270 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HTCHCCKSNF TX
2021-11-02 409-282 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C PORTARTHUR TX
2021-09-28 409-271 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J BEAUMONT TX
2021-09-03 409-288 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J BEAUMONT TX
2021-08-13 409-269 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F BEAUMONT TX
2021-07-06 409-274 0XXX1XXX2XXX4XXX5XXX6XXX · 3 holders which blocks → ONVOY, LLC - TX 903C FAIRMOUNT TX
2021-07-06 409-275 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C NEWTON TX
2021-07-06 409-278 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - TX 903C WARREN TX
2021-06-24 409-272 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C ORANGE TX
2021-06-21 409-268 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SPURGER TX
2021-05-10 409-399 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HEMPHILL TX
2021-05-10 409-788 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MAURICEVL TX
2021-05-07 409-265 0XXX4XXX5XXX · 2 holders which blocks → TELNYX LLC 073H SABINEPASS TX
2021-04-12 409-867 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H BEAUMONT TX
2021-03-18 409-264 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NDLDPTNCHS TX
2021-03-02 409-699 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BUNA TX
2021-03-02 409-799 1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H EVADALE TX
2021-01-13 409-946 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H PT BOLIVAR TX
2021-01-08 409-261 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C GALVESTON TX
2021-01-08 409-262 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C SILSBEE TX
2020-12-22 409-290 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C PINELAND TX
2020-12-08 409-410 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C BEAUMONT TX
2020-11-30 409-336 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H JASPER TX
2020-09-28 409-259 0–9 XXXall 10 · 4 holders which blocks → IP HORIZON LLC 515J BEAUMONT TX
2020-08-14 409-667 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H GALVESTON TX
2020-07-21 409-258 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GALVESTON TX
2020-07-09 409-977 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HTCHCCKSNF TX
2020-07-06 409-509 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C JASPER TX
2020-06-23 409-348 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FANNETT TX
2020-06-17 409-345 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H KIRBYVILLE TX
2020-06-17 409-465 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H GALVESTON TX
2020-06-04 409-257 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J BEAUMONT TX
2020-02-27 409-254 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WOODVILLE TX
2019-12-02 409-247 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H BEAUMONT TX
2019-10-25 409-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BEAUMONT TX
2019-10-18 409-250 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PORTARTHUR TX
2019-09-20 409-529 1XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H BEAUMONT TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.