NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2019-07-26 816-681 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANSASCITY MO
2019-07-26 984-266 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E BONLEE NC
2019-07-25 343-313 not yet reported which blocks → Iristel Inc. 154E Jockvale —
2019-07-25 409-402 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C PT BOLIVAR TX
2019-07-25 409-403 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C NDLDPTNCHS TX
2019-07-25 409-405 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C ORANGE TX
2019-07-25 409-407 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C WESTBURY TX
2019-07-25 430-259 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C CARTHAGE TX
2019-07-25 430-260 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C LINDL SWAN TX
2019-07-25 430-261 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C MINEOLA TX
2019-07-25 430-400 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C LADONIA TX
2019-07-25 430-500 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H POTTSBORO TX
2019-07-25 469-972 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C FERRIS TX
2019-07-25 581-910 not yet reported which blocks → Videotron Ltd. 328F Quebec —
2019-07-25 737-500 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C BASTROP TX
2019-07-25 737-510 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C BERTRAM TX
2019-07-25 737-520 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C FENTRESS TX
2019-07-25 737-530 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → ONVOY, LLC - TX 903C LOMETA TX
2019-07-25 806-900 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C SLATON TX
2019-07-25 825-607 not yet reported which blocks → Iristel Inc. 154E High Level —
2019-07-25 825-608 not yet reported which blocks → Iristel Inc. 154E High River —
2019-07-25 936-930 0XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - TX 903C WASHINGTON TX
2019-07-25 956-474 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C MERCEDES TX
2019-07-25 956-476 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C RIGRANDECY TX
2019-07-24 314-668 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2019-07-24 365-605 not yet reported which blocks → Iristel Inc. 154E Thornhill —
2019-07-24 365-606 not yet reported which blocks → Iristel Inc. 154E Thornhill —
2019-07-24 438-540 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2019-07-24 628-267 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2019-07-24 782-479 not yet reported which blocks → Bragg Communications Inc. 4878 Wellington —
2019-07-24 782-494 not yet reported which blocks → Bragg Communications Inc. 4878 Tyne Valley —
2019-07-24 808-452 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H HONOLULU HI
2019-07-24 863-880 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - FL 937C POINCIANA FL
2019-07-24 956-308 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2019-07-23 346-388 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2019-07-23 782-483 not yet reported which blocks → Bragg Communications Inc. 4878 Eldon —
2019-07-23 782-489 not yet reported which blocks → Bragg Communications Inc. 4878 South Lake —
2019-07-23 858-294 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-07-23 901-455 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-22 254-452 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C AXTELL TX
2019-07-22 254-457 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C CHINA SPG TX
2019-07-22 254-503 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C KOSSE TX
2019-07-22 254-505 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C RANGER TX
2019-07-22 254-556 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C MART TX
2019-07-22 254-566 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C TROY TX
2019-07-22 307-323 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WY 9416 PINEDALE WY
2019-07-22 307-336 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WY 9416 DANIEL WY
2019-07-22 307-456 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WY 9416 BIG PINEY WY
2019-07-22 325-420 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C ROBERT LEE TX
2019-07-22 325-440 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C CARLSBAD TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.