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
2020-12-29 912-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D RICHMONDHL GA
2020-12-28 213-547 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 01 CA
2020-12-28 256-862 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E ANNISTON AL
2020-12-28 256-865 0XXX1XXX3XXX4XXX6XXX7XXX · 5 holders which blocks → ONVOY, LLC - AL 604E ASHLAND AL
2020-12-28 256-871 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AL 604E ATHENS AL
2020-12-28 341-465 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H FRNK MAIN CA
2020-12-28 346-452 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2020-12-28 352-913 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - FL 937C WILDWOOD FL
2020-12-28 352-914 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - FL 937C WILLISTON FL
2020-12-28 469-936 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F PRINCETON TX
2020-12-28 561-583 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-12-28 626-669 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H EL MONTE CA
2020-12-28 626-887 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SNGBLCNN CA
2020-12-28 657-475 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2020-12-28 657-477 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2020-12-28 657-481 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2020-12-28 659-901 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E ALABASTER AL
2020-12-28 659-902 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E BESSEMER AL
2020-12-28 716-610 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C LAKEWOOD NY
2020-12-28 725-242 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2020-12-28 727-910 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C NWPTRICHEY FL
2020-12-28 737-307 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C BERTRAM TX
2020-12-28 737-317 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C DRIPPNGSPG TX
2020-12-28 737-327 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C HUTTO TX
2020-12-28 737-427 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C MCDADE TX
2020-12-28 737-473 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - TX 903C SANGABRIEL TX
2020-12-28 737-677 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C SMITHVILLE TX
2020-12-28 737-937 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C MARTINDALE TX
2020-12-28 813-725 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C TAMPAEST FL
2020-12-28 813-726 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C TAMPAWST FL
2020-12-28 904-789 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C ST JOHNS FL
2020-12-28 915-295 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C CLINT TX
2020-12-28 936-910 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C KENNARD TX
2020-12-28 941-770 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C NORTH PORT FL
2020-12-28 979-797 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BURTON TX
2020-12-24 308-310 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NE 549E SCOTSBLUFF NE
2020-12-24 365-876 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Newmarket —
2020-12-24 437-281 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-24 437-394 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-24 437-634 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-24 438-414 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-24 438-561 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-24 438-562 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-24 445-204 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E PHPHSBZN32 PA
2020-12-24 520-593 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - AZ 630E HAYDEN AZ
2020-12-24 571-476 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSNGTNZN19 VA
2020-12-24 571-566 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSNGTNZN19 VA
2020-12-24 762-268 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E CALHOUN GA
2020-12-24 762-271 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E HEPHZIBAH GA
2020-12-24 804-660 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - VA 138E RICHMOND VA

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.