NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2022-02-28 650-698 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 PALO ALTO CA
2022-02-28 712-932 2XXX which blocks → TON80 COMMUNICATIONS, LLC 516J ASHTON IA
2022-02-28 737-320 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J AUSTIN TX
2022-02-28 772-265 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 PTST LUCIE FL
2022-02-28 775-634 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CARSONCITY NV
2022-02-28 805-891 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 MOORPARK CA
2022-02-28 810-727 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DAVISON MI
2022-02-28 840-215 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 HIGHLAND CA
2022-02-28 840-252 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MENTONE CA
2022-02-28 912-628 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J SAVANNAH GA
2022-02-28 914-626 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MOUNTKISCO NY
2022-02-28 938-226 0XXX2XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FALKVILLE AL
2022-02-28 938-463 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ATHENS AL
2022-02-28 938-722 0XXX1XXX2XXX5XXX7XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SECTION AL
2022-02-28 938-832 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ROGERSVL AL
2022-02-28 959-288 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ENFIELD CT
2022-02-28 971-425 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 TILLAMOOK OR
2022-02-28 971-426 7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ESTACADA OR
2022-02-28 971-766 0XXX5XXX6XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PACIFIC CY OR
2022-02-28 986-582 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J ST ANTHONY ID
2022-02-28 986-874 2XXX which blocks → TON80 COMMUNICATIONS, LLC 516J SOUTH MT ID
2022-02-28 989-767 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J VASSAR MI
2022-02-28 989-886 1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J VICKERYVL MI
2022-02-25 219-426 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HAMMOND IN
2022-02-25 219-466 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J E CHICAGO IN
2022-02-25 224-457 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2022-02-25 224-642 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ELGIN IL
2022-02-25 229-743 0XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OCHLOCKNEE GA
2022-02-25 229-746 0XXX4XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MORVEN GA
2022-02-25 229-832 4XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J EDISON GA
2022-02-25 239-763 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FTMYERSBCH FL
2022-02-25 240-966 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WSNGTNZN16 MD
2022-02-25 254-864 0XXX1XXX8XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F BRANDON TX
2022-02-25 302-596 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 WILMINGTON DE
2022-02-25 321-844 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MELBOURNE FL
2022-02-25 331-373 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OSWEGO IL
2022-02-25 331-627 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LOMBARD IL
2022-02-25 343-649 not yet reported which blocks → Fibernetics Corporation 464D Metcalfe —
2022-02-25 343-650 not yet reported which blocks → Fibernetics Corporation 464D Navan —
2022-02-25 343-651 not yet reported which blocks → Fibernetics Corporation 464D South Mountain —
2022-02-25 434-624 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLARKSVL VA
2022-02-25 440-889 8XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MONTVILLE OH
2022-02-25 458-466 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BANDON OR
2022-02-25 480-896 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2022-02-25 530-910 0XXX1XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HAYFORK CA
2022-02-25 530-970 0XXX which blocks → TON80 COMMUNICATIONS, LLC 516J SODA SPG CA
2022-02-25 571-727 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LORTON VA
2022-02-25 572-746 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BRITTON OK
2022-02-25 582-452 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WINBURNE PA
2022-02-25 667-404 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 PRINCEFRCK MD

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.