NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2023-01-13 971-446 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2023-01-13 971-447 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CLACKAMAS OR
2023-01-13 980-588 0XXX1XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC - NC 638E ANSONVILLE NC
2023-01-13 980-618 0XXX1XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLC - NC 638E STANLEY NC
2023-01-13 984-594 0XXX1XXX5XXX · 2 holders which blocks → ONVOY, LLC - NC 638E PRINCETON NC
2023-01-12 216-888 0–9 XXXall 10 · 3 holders which blocks → LEAP TELECOM, LLC 616J MONTRSE OH
2023-01-12 236-268 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2023-01-12 239-413 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FORT MYERS FL
2023-01-12 321-464 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 COCOA FL
2023-01-12 321-466 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 COCOA FL
2023-01-12 321-467 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MELBOURNE FL
2023-01-12 321-468 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 COCOA FL
2023-01-12 331-294 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NAPERVILLE IL
2023-01-12 346-628 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2023-01-12 346-638 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2023-01-12 346-648 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2023-01-12 346-649 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2023-01-12 412-524 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PTTSBGZON7 PA
2023-01-12 412-659 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PTGSBNZN22 PA
2023-01-12 464-210 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLUEISLAND IL
2023-01-12 474-354 not yet reported which blocks → Bell Mobility 6574 Saskatoon —
2023-01-12 612-494 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2023-01-12 640-243 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C TRENTON NJ
2023-01-12 719-698 0–9 XXXwhole prefix which blocks → COMCAST IP PHONE, LLC 318J COLORDOSPG CO
2023-01-12 725-294 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2023-01-12 762-426 0XXX1XXX2XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - GA 067D WINTERVL GA
2023-01-12 762-427 0XXX1XXX2XXX8XXX · 3 holders which blocks → ONVOY, LLC - GA 067D DILLRDMTCY GA
2023-01-12 782-573 not yet reported which blocks → Fibernetics Corporation 464D Kentville —
2023-01-12 782-574 not yet reported which blocks → Fibernetics Corporation 464D Liverpool —
2023-01-12 782-575 not yet reported which blocks → Fibernetics Corporation 464D Musquodoboit Harbour —
2023-01-12 782-576 not yet reported which blocks → Fibernetics Corporation 464D Parrsboro —
2023-01-12 782-642 not yet reported which blocks → Fibernetics Corporation 464D Sackville —
2023-01-12 782-643 not yet reported which blocks → Fibernetics Corporation 464D Shubenacadie —
2023-01-12 825-523 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2023-01-12 912-821 0XXX1XXX2XXX6XXX · 3 holders which blocks → ONVOY, LLC - GA 067D SCREVEN GA
2023-01-12 943-215 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA NE GA
2023-01-12 943-216 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CONYERS GA
2023-01-12 943-249 0XXX1XXX4XXX · 3 holders which blocks → ONVOY, LLC - GA 067D ROOPVILLE GA
2023-01-11 213-619 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-01-11 254-514 0XXX2XXX4XXX5XXX · 2 holders which blocks → TWILIO INTERNATIONAL, INC. 506J BUCKHOLTS TX
2023-01-11 350-204 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ATWATER CA
2023-01-11 405-995 0XXX1XXX7XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 HOLDENVL OK
2023-01-11 430-380 0XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C BRASHEAR TX
2023-01-11 440-852 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CHARDON OH
2023-01-11 445-276 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E PHPHSBZN33 PA
2023-01-11 480-942 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 501-571 0XXX1XXX5XXX · 2 holders which blocks → ONVOY, LLC - AR 348F WYE AR
2023-01-11 513-650 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2023-01-11 513-980 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 OXFORD OH
2023-01-11 516-961 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C NASSAUZN09 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.