NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
2022-01-07 863-319 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 AVON PARK FL
2022-01-07 901-659 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2022-01-07 904-767 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 JACKSONVL FL
2022-01-07 925-546 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WALNUT CRK CA
2022-01-07 928-464 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 WICKENBURG AZ
2022-01-07 928-469 0XXX1XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 PARKER AZ
2022-01-07 929-746 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NWYRCYZN04 NY
2022-01-07 929-763 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NWYRCYZN03 NY
2022-01-07 929-823 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NWYRCYZN09 NY
2022-01-07 929-832 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NWYRCYZN08 NY
2022-01-07 930-256 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J NEW ALBANY IN
2022-01-07 930-837 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GALENA IN
2022-01-07 938-206 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J ANNISTON AL
2022-01-07 945-322 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DE SOTO TX
2022-01-07 945-837 0XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DLFTWTARPT TX
2022-01-07 947-426 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SOUTHFIELD MI
2022-01-07 947-837 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J W BLOOMFLD MI
2022-01-07 959-832 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEWBRITAIN CT
2022-01-07 985-352 0–9 XXXall 10 · 5 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J COVINGTON LA
2022-01-07 985-469 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RACELAND LA
2022-01-06 224-768 2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAKEFOREST IL
2022-01-06 260-292 0XXX7XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F ST JOE IN
2022-01-06 326-685 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FAIRBORN OH
2022-01-06 343-668 not yet reported which blocks → Fibernetics Corporation 464D Alexandria —
2022-01-06 343-669 not yet reported which blocks → Fibernetics Corporation 464D Avonmore —
2022-01-06 343-670 not yet reported which blocks → Fibernetics Corporation 464D Finch —
2022-01-06 343-671 not yet reported which blocks → Fibernetics Corporation 464D Glen Robertson —
2022-01-06 343-672 not yet reported which blocks → Fibernetics Corporation 464D Ingleside —
2022-01-06 343-673 not yet reported which blocks → Fibernetics Corporation 464D Iroquois —
2022-01-06 343-674 not yet reported which blocks → Fibernetics Corporation 464D L'Orignal —
2022-01-06 343-675 not yet reported which blocks → Fibernetics Corporation 464D Lancaster —
2022-01-06 346-538 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J RICHMNRNBG TX
2022-01-06 346-539 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CYPRESS TX
2022-01-06 346-540 0–9 XXXall 10 · 6 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J SPLENDORA TX
2022-01-06 351-837 0XXX1XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ASHBY MA
2022-01-06 352-868 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SLRSPGSHRS FL
2022-01-06 463-676 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OAKLANDON IN
2022-01-06 629-935 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OLDHICKORY TN
2022-01-06 659-678 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SPRINGVL AL
2022-01-06 682-532 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WEATHERFD TX
2022-01-06 769-280 0–9 XXXall 10 · 6 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J HATTIESBG MS
2022-01-06 769-373 0XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FAYETTE MS
2022-01-06 769-538 0XXX1XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CENTREVL MS
2022-01-06 771-717 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H WSHNGTNZN1 DC
2022-01-06 772-262 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 HOBE SOUND FL
2022-01-06 808-318 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - HI 6516 WAILUKU HI
2022-01-06 865-431 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J SOLWAY TN
2022-01-06 954-508 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 FTLAUDERDL FL
2022-01-05 223-746 0XXX1XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MIFFLINTN PA
2022-01-05 252-556 0XXX1XXX2XXX3XXX6XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E SWANQUARTR NC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.