NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19
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
2020-05-28 937-932 0XXX1XXX2XXX3XXX · 2 holders which blocks → ONVOY, LLC - OH 464C HUNTSVILLE OH
2020-05-28 937-984 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J MILFORDCTR OH
2020-05-28 937-989 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C YORKCENTER OH
2020-05-28 959-224 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - CT 639C LITCHFIELD CT
2020-05-28 959-301 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - CT 639C COVENTRY CT
2020-05-28 959-949 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CT 639C JEWETTCITY CT
2020-05-27 213-946 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H LSAN DA 12 CA
2020-05-27 223-336 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CARLISLE PA
2020-05-27 223-348 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H DOVER PA
2020-05-27 223-465 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H GREENCASTL PA
2020-05-27 223-529 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LANCASTER PA
2020-05-27 223-677 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H REEDSVILLE PA
2020-05-27 223-732 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H PALMYRA PA
2020-05-27 223-758 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H MECHANCSBG PA
2020-05-27 223-786 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H STEWARTSTN PA
2020-05-27 223-842 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H NEWVILLE PA
2020-05-27 223-877 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H YORK PA
2020-05-27 223-946 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H MYERSTOWN PA
2020-05-27 223-977 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H PORT ROYAL PA
2020-05-27 279-234 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SCRM MAIN CA
2020-05-27 279-345 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SCRM NORTH CA
2020-05-27 341-799 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RICHMOND CA
2020-05-27 424-424 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CMTN GRDN CA
2020-05-27 438-480 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-05-27 445-455 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PLUMSTEDVL PA
2020-05-27 484-966 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BETHLEHEM PA
2020-05-27 539-877 0XXX1XXX2XXX5XXX6XXX7XXX · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J HARTSHORNE OK
2020-05-27 562-488 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H ALAMITOS CA
2020-05-27 562-855 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LONG BEACH CA
2020-05-27 562-966 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DOWNEY CA
2020-05-27 610-610 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H MORGANTOWN PA
2020-05-27 661-502 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D SNCA NHCS CA
2020-05-27 878-348 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BEAVER FLS PA
2020-05-27 878-377 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SHARPSVL PA
2020-05-27 878-677 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H NEWWLMNGTN PA
2020-05-27 878-688 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H HOMER CITY PA
2020-05-27 949-822 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H IRVINE CA
2020-05-27 949-844 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CAPITRNVLY CA
2020-05-27 949-867 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NEWPORTBCH CA
2020-05-27 949-946 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SADLBK VLY CA
2020-05-26 225-547 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CONVENT LA
2020-05-26 226-691 not yet reported which blocks → TekSavvy Solutions Inc 548H Tecumseh —
2020-05-26 226-692 not yet reported which blocks → TekSavvy Solutions Inc 548H Windsor —
2020-05-26 226-693 not yet reported which blocks → TekSavvy Solutions Inc 548H Wheatley —
2020-05-26 226-694 not yet reported which blocks → TekSavvy Solutions Inc 548H Woodslee —
2020-05-26 234-278 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C HINCKLEY OH
2020-05-26 234-290 0XXX1XXX2XXX3XXX5XXX · 2 holders which blocks → ONVOY, LLC - OH 464C WINDHAM OH
2020-05-26 360-541 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 VANCOUVER WA
2020-05-26 567-350 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C CAREY OH
2020-05-26 567-372 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C FOREST OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.