NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2022-03-01 229-966 0XXX1XXX3XXX6XXX7XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HAHIRA GA
2022-03-01 302-726 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ANGOLA DE
2022-03-01 302-742 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DELAWARECY DE
2022-03-01 423-927 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MORRISTOWN TN
2022-03-01 425-543 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
2022-03-01 442-389 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BLYTHE CA
2022-03-01 470-952 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA GA
2022-03-01 505-562 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J DIXON NM
2022-03-01 515-896 0XXX3XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RIPPEY IA
2022-03-01 520-652 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → QWEST CORPORATION 9636 WHITLOW AZ
2022-03-01 530-928 8XXX which blocks → TON80 COMMUNICATIONS, LLC 516J GERBER CA
2022-03-01 539-967 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BROKENARRW OK
2022-03-01 551-733 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RIDGEWOOD NJ
2022-03-01 551-766 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RUTHERFORD NJ
2022-03-01 575-599 0XXX1XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RED RIVER NM
2022-03-01 575-916 8XXX which blocks → TON80 COMMUNICATIONS, LLC 516J GALLINA NM
2022-03-01 608-978 8XXX which blocks → TON80 COMMUNICATIONS, LLC 516J MARSHALL WI
2022-03-01 618-404 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 HIGHLAND IL
2022-03-01 618-828 0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 WESTVIEW IL
2022-03-01 618-832 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J JERSEYVL IL
2022-03-01 618-872 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GLENCARBON IL
2022-03-01 620-686 0XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LARNED KS
2022-03-01 620-847 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J MULLINVL KS
2022-03-01 620-969 0XXX6XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MAPLETON KS
2022-03-01 629-526 0XXX1XXX3XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SOFREDONIA TN
2022-03-01 640-466 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ATLNTIC CY NJ
2022-03-01 662-880 0–9 XXXall 10 · 5 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 OLIVE BRCH MS
2022-03-01 667-446 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ELKRIDGE MD
2022-03-01 667-468 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J NANTICOKE MD
2022-03-01 667-626 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CATONSVL MD
2022-03-01 667-737 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PERRYVILLE MD
2022-03-01 667-856 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DUNDALK MD
2022-03-01 725-377 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LAS VEGAS NV
2022-03-01 737-321 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ELGIN TX
2022-03-01 765-972 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FRANKFORT IN
2022-03-01 775-866 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FALLON NV
2022-03-01 825-306 not yet reported which blocks → ISP Telecom Inc. 4727 Crossfield —
2022-03-01 825-309 not yet reported which blocks → ISP Telecom Inc. 4727 Nanton —
2022-03-01 825-336 not yet reported which blocks → ISP Telecom Inc. 4727 Turner Valley —
2022-03-01 825-418 not yet reported which blocks → ISP Telecom Inc. 4727 Vulcan —
2022-03-01 825-569 not yet reported which blocks → ISP Telecom Inc. 4727 Cardston —
2022-03-01 840-216 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ARROWHEAD CA
2022-03-01 856-633 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HADDON HTS NJ
2022-03-01 870-922 0XXX1XXX2XXX3XXX4XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J AUGUSTA AR
2022-03-01 870-977 0XXX1XXX2XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BLACKFIHLK AR
2022-03-01 931-727 0XXX1XXX2XXX3XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SEWANEE TN
2022-03-01 931-767 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WINCHESTER TN
2022-03-01 939-377 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2022-02-28 213-653 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2022-02-28 218-648 0XXX2XXX3XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PALO MN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.