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
2022-02-18 970-996 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HAYDEN CO
2022-02-18 971-688 6XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLATSKANIE OR
2022-02-18 971-788 5XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLOVERDALE OR
2022-02-18 980-426 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LILESVILLE NC
2022-02-18 980-456 0XXX1XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GRTQRRCKWL NC
2022-02-18 980-746 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHNGRVLNDS NC
2022-02-18 986-243 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J RAFT RIVER ID
2022-02-18 986-346 0XXX1XXX4XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PAUL ID
2022-02-18 986-382 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J PARIS ID
2022-02-18 986-466 4XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PRAIRIE ID
2022-02-18 986-526 4XXX which blocks → TON80 COMMUNICATIONS, LLC 516J SHOUP ID
2022-02-17 218-642 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ALBORN MN
2022-02-17 218-872 0XXX2XXX6XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BABBITT MN
2022-02-17 219-463 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DYER IN
2022-02-17 219-675 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HANNA IN
2022-02-17 234-746 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ELIVERPOOL OH
2022-02-17 239-748 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MARCO IS FL
2022-02-17 260-746 0XXX6XXX7XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAUD IN
2022-02-17 272-642 0XXX1XXX2XXX3XXX5XXX6XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ORANGEVL PA
2022-02-17 309-942 0XXX2XXX6XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SAN JOSE IL
2022-02-17 309-996 0XXX1XXX6XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FIATT IL
2022-02-17 318-842 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OLLA LA
2022-02-17 319-426 0XXX3XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FAIRBANK IA
2022-02-17 319-663 3XXX5XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BLAIRSTOWN IA
2022-02-17 319-746 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J BRANDON IA
2022-02-17 320-742 6XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SANDSTONE MN
2022-02-17 320-942 1XXX5XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PINE CITY MN
2022-02-17 331-288 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ELBURN IL
2022-02-17 331-466 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GLEN ELLYN IL
2022-02-17 331-688 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NAPERVILLE IL
2022-02-17 331-746 0XXX2XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KANEVILLE IL
2022-02-17 351-588 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HAVERHILL MA
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

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.