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
2022-03-03 908-733 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LINDEN NJ
2022-03-03 945-495 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C PROSPER TX
2022-03-03 956-751 0XXX1XXX8XXX9XXX · 3 holders which blocks → STPCS JOINT VENTURE, LLC 4290 ZAPATA TX
2022-03-03 970-543 0XXX3XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MESA CO
2022-03-03 970-995 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEW CASTLE CO
2022-03-03 989-664 4XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ROSEBUSH MI
2022-03-03 989-997 2XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GLENNIE MI
2022-03-02 213-654 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2022-03-02 213-727 0–9 XXXall 10 · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LSAN DA 08 CA
2022-03-02 218-876 0XXX1XXX2XXX6XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J AURORA MN
2022-03-02 225-468 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BATONROUGE LA
2022-03-02 254-489 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C WACO TX
2022-03-02 361-291 0–9 XXXall 10 · 2 holders which blocks → CALLWORKS CORPORATION 475J C CHRISTI TX
2022-03-02 364-366 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OAK GROVE KY
2022-03-02 434-687 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PINEYRIVER VA
2022-03-02 458-625 5XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BONANZA OR
2022-03-02 458-886 5XXX6XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BLY OR
2022-03-02 475-450 0–9 XXXall 10 · 3 holders which blocks → BARR TEL USA, INC. - CT 866H BRIDGEPORT CT
2022-03-02 475-480 0–9 XXXall 10 · 3 holders which blocks → BARR TEL USA, INC. - CT 866H NEW HAVEN CT
2022-03-02 475-550 0–9 XXXall 10 · 5 holders which blocks → BARR TEL USA, INC. - CT 866H STAMFORD CT
2022-03-02 475-750 0–9 XXXall 10 · 3 holders which blocks → BARR TEL USA, INC. - CT 866H DANBURY CT
2022-03-02 475-850 0–9 XXXall 10 · 5 holders which blocks → BARR TEL USA, INC. - CT 866H NORWALK CT
2022-03-02 559-993 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J VISALIA CA
2022-03-02 572-363 0–9 XXXall 10 · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHICKASHA OK
2022-03-02 572-384 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MOORE OK
2022-03-02 572-633 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MIDWEST CY OK
2022-03-02 656-300 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PLANT CITY FL
2022-03-02 656-400 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TAMPACEN FL
2022-03-02 656-500 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H TAMPAEST FL
2022-03-02 656-600 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TAMPANTH FL
2022-03-02 656-800 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TAMPASTH FL
2022-03-02 657-586 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-03-02 657-592 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-03-02 659-282 0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LIVINGSTON AL
2022-03-02 682-379 0XXX6XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SPRINGTOWN TX
2022-03-02 806-560 0–9 XXXall 10 · 4 holders which blocks → CALLWORKS CORPORATION 475J AMARILLO TX
2022-03-02 839-217 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWBERRY SC
2022-03-02 938-322 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DECATUR AL
2022-03-02 940-335 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CALLWORKS CORPORATION 475J WICHITAFLS TX
2022-03-02 954-836 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C FTLAUDERDL FL
2022-03-02 956-676 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CALLWORKS CORPORATION 475J BROWNSVL TX
2022-03-02 970-998 0XXX2XXX5XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MCCOY CO
2022-03-02 971-466 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SILVERTON OR
2022-03-02 971-668 1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RAINIER OR
2022-03-02 980-727 0XXX1XXX2XXX3XXX7XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MORVEN NC
2022-03-01 201-619 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H JERSEYCITY NJ
2022-03-01 201-922 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H CRAGMERE NJ
2022-03-01 201-971 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NJ 637C HACKENSACK NJ
2022-03-01 219-373 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CROWNPOINT IN
2022-03-01 219-546 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GARY IN

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.