NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
2019-07-25 956-474 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
2019-07-22 325-550 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C EDEN TX
2019-07-22 325-666 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C WINTERS TX
2019-07-22 325-770 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C JUNCTION TX
2019-07-22 325-880 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C MENARD TX
2019-07-22 341-999 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RICHMOND CA
2019-07-22 431-878 not yet reported which blocks → Westman Media Cooperative Ltd 120F Inglis —
2019-07-22 431-879 not yet reported which blocks → Westman Media Cooperative Ltd 120F Rapid City —
2019-07-22 480-597 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J PHOENIX AZ
2019-07-22 782-472 not yet reported which blocks → Bragg Communications Inc. 4878 Chelsea —
2019-07-22 782-487 not yet reported which blocks → Bragg Communications Inc. 4878 New Germany —
2019-07-19 226-807 not yet reported which blocks → Iristel Inc. 154E Hespeler —
2019-07-19 306-403 not yet reported which blocks → Iristel Inc. 154E Fort Qu'Appelle —
2019-07-19 332-219 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2019-07-19 413-371 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D BELCHERTN MA
2019-07-19 438-364 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-07-19 469-746 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FERRIS TX
2019-07-19 506-909 not yet reported which blocks → Iristel Inc. 154E Grand Falls —
2019-07-19 551-400 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-07-19 640-500 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C MAYS LDG NJ
2019-07-19 640-600 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C MEDFORD NJ
2019-07-19 640-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C TUCKAHOE NJ
2019-07-19 640-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C SOMERS PT NJ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.