NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
2021-02-02 813-738 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H TAMPANTH FL
2021-02-02 828-576 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - NC 638E FRANKLIN NC
2021-02-02 838-299 2XXX3XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H HILLSDALE NY
2021-02-02 838-348 3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H ATHENS NY
2021-02-02 838-488 1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H FTCOVINGTN NY
2021-02-02 838-499 2XXX3XXX4XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CANAAN NY
2021-02-02 838-588 0XXX5XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H DELANSON NY
2021-02-02 838-599 0XXX1XXX3XXX5XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CASTLETON NY
2021-02-02 838-677 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H COLONIE NY
2021-02-02 838-688 4XXX6XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H BROADALBIN NY
2021-02-02 838-699 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H BRAINADSVL NY
2021-02-02 838-758 6XXX7XXX · 2 holders which blocks → FRACTEL, LLC 965H BERLIN NY
2021-02-02 838-786 4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H CAIRO NY
2021-02-02 838-788 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BERNE NY
2021-02-02 838-789 9XXX which blocks → FRACTEL, LLC 965H CANAJOHARI NY
2021-02-02 838-799 7XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H BLUEMTLAKE NY
2021-02-02 838-944 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CATSKILL NY
2021-02-02 838-946 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BALLSTNSPA NY
2021-02-02 838-966 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BOLTON LDG NY
2021-02-02 838-977 7XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H CAROGALAKE NY
2021-02-02 850-949 0XXX2XXX3XXX · 3 holders which blocks → TELNYX LLC 073H CENTURY FL
2021-02-02 856-565 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C HADDONFLD NJ
2021-02-02 856-586 0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - NJ 637C WOODSTOWN NJ
2021-02-02 863-278 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H FORT MEADE FL
2021-02-02 863-281 0–9 XXXall 10 · 7 holders which blocks → TELNYX LLC 073H CLEWISTON FL
2021-02-02 904-668 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELNYX LLC 073H HILLIARD FL
2021-02-02 929-572 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NWYRCYZN06 NY
2021-02-01 219-272 0XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H LAKE VLG IN
2021-02-01 223-253 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → STRATUS NETWORKS 495J NEW OXFORD PA
2021-02-01 225-479 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E SPRINGFLD LA
2021-02-01 321-358 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H COCOA FL
2021-02-01 340-208 not yet reported which blocks → T-MOBILE USA, INC. 6529 ST CROIX VI
2021-02-01 346-474 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C FRIENDSWD TX
2021-02-01 414-567 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MILWAUKZN1 WI
2021-02-01 417-810 0XXX1XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - MO 093F BRANSON W MO
2021-02-01 435-352 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 HEBER CITY UT
2021-02-01 447-200 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H MELVIN IL
2021-02-01 447-221 1XXX2XXX3XXX4XXX which blocks → ONVOY, LLC 224C WESTERVELT IL
2021-02-01 447-222 0XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H ARMSTRONG IL
2021-02-01 447-223 2XXX3XXX4XXX5XXX which blocks → ONVOY, LLC 224C FINDLAY IL
2021-02-01 447-224 2XXX3XXX4XXX5XXX which blocks → ONVOY, LLC 224C KIRKSVILLE IL
2021-02-01 447-300 0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H MANSFIELD IL
2021-02-01 447-333 0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 6 holders which blocks → FRACTEL, LLC 965H BISMARCK IL
2021-02-01 447-356 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H RIVERTON IL
2021-02-01 447-400 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SHERMAN IL
2021-02-01 447-444 0XXX1XXX2XXX3XXX4XXX7XXX · 6 holders which blocks → FRACTEL, LLC 965H BONDVILLE IL
2021-02-01 447-465 0XXX1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H HENNING IL
2021-02-01 447-500 0XXX1XXX2XXX5XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H HAMMOND IL
2021-02-01 447-529 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H DECATUR IL
2021-02-01 447-600 0XXX1XXX2XXX4XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H TOLONO IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.