NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, all time — NPA 260
FRONTIER NORTH, INC.. - IN 94
NEW CINGULAR WIRELESS PCS, LLC - IL 52
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 36
BRIGHTSPEED OF INDIANA, LLC 36
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 32
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
— 260-447 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-449 0XXX1XXX5XXX6XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-450 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 FORT WAYNE IN
— 260-451 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-452 0XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-455 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-456 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-458 1XXX4XXX7XXX · 2 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-459 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-460 0XXX7XXX which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-461 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-463 none assigned yet which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 LAGRANGE IN
— 260-466 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORT WAYNE IN
— 260-467 0XXX3XXX6XXX7XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-468 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER MIDSTATES, INC. - IN 0831 RESERVOIR IN
— 260-469 not yet reported which blocks → COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM 4169 FORT WAYNE IN
— 260-470 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-471 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-475 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 PLEASANTLK IN
— 260-478 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-479 0XXX5XXX7XXX8XXX9XXX which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-480 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-481 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-482 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-483 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-484 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-485 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-486 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-487 1XXX which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-488 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 HAMILTON IN
— 260-489 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-490 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-492 3XXX which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-493 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 NEW HAVEN IN
— 260-494 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 FORT WAYNE IN
— 260-495 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FREMONT IN
— 260-496 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-497 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 FORT WAYNE IN
— 260-499 7XXX which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 LAGRANGE IN
— 260-502 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAWAKA IN
— 260-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 260-519 4XXX6XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUNTINGTON IN
— 260-525 3XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BERNE IN
— 260-530 0XXX3XXX5XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUNTINGTON IN
— 260-541 1XXX4XXX6XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CORUNNA IN
— 260-543 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRONTIER MIDSTATES, INC. - IN 0831 UNIONDALE IN
— 260-544 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 KENDALLVL IN
— 260-547 1XXX2XXX5XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 PREBLE IN
— 260-553 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GARRETT IN
— 260-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.