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
2022-02-17 365-683 not yet reported which blocks → Fibernetics Corporation 464D Cooksville —
2022-02-17 413-742 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J ASHFIELD MA
2022-02-17 413-833 3XXX which blocks → TON80 COMMUNICATIONS, LLC 516J BERNARDSTN MA
2022-02-17 413-942 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J COLRAIN MA
2022-02-17 434-626 0XXX1XXX6XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PAMPLIN VA
2022-02-17 440-977 1XXX7XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WINDSOR OH
2022-02-17 507-968 0XXX1XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LE SUEUR MN
2022-02-17 579-424 not yet reported which blocks → Cooptel 818D St-Michel-des-Saints —
2022-02-17 582-546 0XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SIGEL PA
2022-02-17 608-878 0XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J STEUBEN WI
2022-02-17 608-908 9XXX which blocks → TON80 COMMUNICATIONS, LLC 516J WAUMANDEE WI
2022-02-17 608-936 0XXX2XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WAUZEKA WI
2022-02-17 608-945 0XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MOUNT ZION WI
2022-02-17 608-947 3XXX which blocks → TON80 COMMUNICATIONS, LLC 516J LIBETYPOLE WI
2022-02-17 608-969 1XXX6XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WIOTA WI
2022-02-17 620-737 0XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BUFFALO KS
2022-02-17 620-776 0XXX6XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CONWAY KS
2022-02-17 620-932 0XXX1XXX3XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ERIE KS
2022-02-17 626-949 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ALHAMBRA CA
2022-02-17 626-990 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H AZUSA CA
2022-02-17 636-874 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OFALLON MO
2022-02-17 651-588 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAKE CITY MN
2022-02-17 662-928 3XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CRENSHAW MS
2022-02-17 662-955 0XXX1XXX2XXX5XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J TISHOMINGO MS
2022-02-17 716-663 0XXX3XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WILSON NY
2022-02-17 719-673 0XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HOLLY CO
2022-02-17 719-788 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ORDWAY CO
2022-02-17 719-926 0XXX1XXX6XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SAGUACHE CO
2022-02-17 719-932 0XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LA VETA CO
2022-02-17 775-633 0XXX3XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MANHATTAN NV
2022-02-17 775-874 0XXX1XXX3XXX4XXX7XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FERNLEY NV
2022-02-17 775-966 0XXX1XXX2XXX3XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FISHLK VLY NV
2022-02-17 828-637 0XXX1XXX2XXX6XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J MARS HILL NC
2022-02-17 858-787 8XXX which blocks → TON80 COMMUNICATIONS, LLC 516J PINEVALLEY CA
2022-02-17 863-553 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLEWISTON FL
2022-02-17 864-317 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J GREENWOOD SC
2022-02-17 872-317 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN07 IL
2022-02-17 910-870 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SOUTHEPINS NC
2022-02-17 912-609 0–9 XXXall 10 · 3 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 WAYCROSS GA
2022-02-17 920-874 1XXX3XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEWTONBURG WI
2022-02-17 920-972 2XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BURNETT WI
2022-02-17 928-534 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SAFFORD AZ
2022-02-17 928-622 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FLAGSTAFF AZ
2022-02-17 930-426 1XXX3XXX8XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CORYDON IN
2022-02-17 937-906 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J DAYTON OH
2022-02-17 941-588 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CAPE HAZE FL
2022-02-17 945-248 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
2022-02-17 949-898 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H IRVINE CA
2022-02-17 949-919 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CAPITRNVLY CA
2022-02-17 959-716 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEW LONDON CT

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.