NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 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
2022-02-14 440-825 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 ASHTABULA OH
2022-02-14 440-841 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ASHTABULA OH
2022-02-14 442-449 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H OCSD OCSD CA
2022-02-14 447-417 4XXX which blocks → TWILIO INTERNATIONAL, INC. 506J SPRINGFLD IL
2022-02-14 447-487 4XXX which blocks → TWILIO INTERNATIONAL, INC. 506J QUINCY IL
2022-02-14 447-497 0–9 XXXall 10 · 2 holders which blocks → TWILIO INTERNATIONAL, INC. 506J MATTOON IL
2022-02-14 458-837 1XXX4XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MITCHELL OR
2022-02-14 530-860 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H OROVILLE CA
2022-02-14 548-848 not yet reported which blocks → Mornington Communications Co-operative Ltd. 400E Tavistock —
2022-02-14 563-837 0XXX2XXX4XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FREDECKSBG IA
2022-02-14 563-972 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J WADENA IA
2022-02-14 682-384 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C CLEBURNE TX
2022-02-14 727-554 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEARWATER FL
2022-02-14 727-558 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEARWATER FL
2022-02-14 779-739 7XXX which blocks → TWILIO INTERNATIONAL, INC. 506J FORREST IL
2022-02-14 787-456 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2022-02-14 825-452 not yet reported which blocks → Bell Mobility 6574 Calgary —
2022-02-14 878-673 0XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DERRY PA
2022-02-14 920-792 0XXX2XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEWTON WI
2022-02-14 929-993 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NWYRCYZN13 NY
2022-02-14 939-330 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2022-02-14 939-342 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2022-02-14 939-449 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 TRUJILLOAL PR
2022-02-14 939-641 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX which blocks → SUNCOM DBA T-MOBILE USA 8645 MAYAGUEZ PR
2022-02-14 986-225 0XXX1XXX2XXX5XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - ID 192F MARSING ID
2022-02-14 986-227 0XXX2XXX7XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - ID 192F DONNELLY ID
2022-02-14 986-245 0XXX4XXX · 2 holders which blocks → DIRECT COMMUNICATIONS ROCKLAND, INC. 2232 ROCKLAND ID
2022-02-14 986-646 4XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OAKLEY ID
2022-02-11 272-782 0XXX1XXX2XXX7XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NUMIDIA PA
2022-02-11 279-219 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2022-02-11 351-230 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LEOMINSTER MA
2022-02-11 351-746 7XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WINCHENDON MA
2022-02-11 352-773 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WEEKICHSPG FL
2022-02-11 430-306 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K EMORY TX
2022-02-11 434-683 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CLOVER VA
2022-02-11 470-926 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 WINDER GA
2022-02-11 470-930 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 GAINESVL GA
2022-02-11 539-280 0XXX1XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F HOMINY OK
2022-02-11 548-423 not yet reported which blocks → Quadro Communications Co-operative Inc. 004G Beachville —
2022-02-11 548-425 not yet reported which blocks → Quadro Communications Co-operative Inc. 004G Ingersoll —
2022-02-11 563-342 3XXX which blocks → TON80 COMMUNICATIONS, LLC 516J RYAN IA
2022-02-11 563-466 3XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J VOLGA IA
2022-02-11 689-274 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SANFORD FL
2022-02-11 762-726 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ROME GA
2022-02-11 805-840 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ARROYOGRND CA
2022-02-11 857-468 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CHARLESTN MA
2022-02-11 857-832 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BRIGHTON MA
2022-02-11 863-466 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OKEECHOBEE FL
2022-02-11 872-318 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2022-02-11 878-265 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F CALIFORNIA PA

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.