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
— 812-334 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-335 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-336 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-337 9XXX which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-338 0XXX1XXX5XXX7XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 ENGLISH IN
— 812-339 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-340 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 BLOOMINGTN IN
— 812-341 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-342 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-343 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 COLUMBUS IN
— 812-344 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 COLUMBUS IN
— 812-345 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 BLOOMINGTN IN
— 812-346 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 NO VERNON IN
— 812-347 4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 RAMSEY IN
— 812-348 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-349 8XXX which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-350 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 COLUMBUS IN
— 812-352 3XXX6XXX7XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 NO VERNON IN
— 812-353 8XXX which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-354 none assigned yet which blocks → FRONTIER NORTH, INC. - IN 0779 PETERSBURG IN
— 812-355 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-356 0XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MEROM IN
— 812-357 none assigned yet which blocks → PERRY - SPENCER RURAL TELEPHONE COOP., INC. 0807 ST MEINRAD IN
— 812-358 7XXX which blocks → FRONTIER NORTH, INC. - IN 0779 BROWNSTOWN IN
— 812-359 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 SANDRIDGE IN
— 812-360 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLOOMINGTN IN
— 812-361 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLOOMINGTN IN
— 812-362 0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 CHRISNEY IN
— 812-364 2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 PALMYRA IN
— 812-365 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 MARENGO IN
— 812-366 0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 CRANDALL IN
— 812-367 4XXX5XXX6XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FERDINAND IN
— 812-368 not yet reported which blocks → PAETEC ITEL, LLC 829J SOLITUDE IN
— 812-371 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLUMBUS IN
— 812-372 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-373 6XXX which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-374 2XXX3XXX4XXX6XXX7XXX8XXX9XXX which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-375 4XXX which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-376 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-377 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-378 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-379 3XXX8XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 COLUMBUS IN
— 812-380 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FRONTIER NORTH, INC. - IN 0779 PETERSBURG IN
— 812-381 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLOOMFIELD IN
— 812-382 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 GRAYSVILLE IN
— 812-383 1XXX2XXX3XXX · 3 holders which blocks → SMITHVILLE COMM., INC DBA SMITHVILLE TELEPHONE CO. 0818 HYMERA IN
— 812-384 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 BLOOMFIELD IN
— 812-385 none assigned yet which blocks → FRONTIER NORTH, INC. - IN 0779 PRINCETON IN
— 812-386 none assigned yet which blocks → FRONTIER NORTH, INC. - IN 0779 PRINCETON IN
— 812-387 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 PRINCETON IN

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.