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
— 812-388 not yet reported which blocks → DAVIESS MARTIN CTY RURL TEL DBA RTC COMMUNICATIONS 0759 TRINIYWLMS IN
— 812-389 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 BIRDSEYE IN
— 812-391 1XXX5XXX7XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BLOOMINGTN IN
— 812-392 1XXX4XXX5XXX8XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 SCIPIO IN
— 812-394 0XXX1XXX3XXX4XXX7XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FAIRBANKS IN
— 812-395 not yet reported which blocks → PAETEC ITEL, LLC 829J TELL CITY IN
— 812-396 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 VINCENNES IN
— 812-397 3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 SHELBURN IN
— 812-398 0XXX1XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - IN 0779 OAKTOWN IN
— 812-401 not yet reported which blocks → RCN TELECOM SERVICES OF ILLINOIS, LLC 511K EVANSVILLE IN
— 812-402 not yet reported which blocks → RCN TELECOM SERVICES OF ILLINOIS, LLC 511K EVANSVILLE IN
— 812-405 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SEYMOUR IN
— 812-410 0–9 XXXall 10 · 9 holders which blocks → METROPCS, INC. 5562 GREENSBURG IN
— 812-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 812-414 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SCOTTSBURG IN
— 812-416 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C SCOTTSBURG IN
— 812-419 0XXX1XXX2XXX3XXX7XXX8XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CYNTHIANA IN
— 812-421 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-422 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-423 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-424 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-425 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-426 3XXX which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-427 8XXX which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 VEVAY IN
— 812-428 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-429 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-430 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVANSVILLE IN
— 812-431 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVANSVILLE IN
— 812-432 1XXX2XXX4XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 DILLSBORO IN
— 812-433 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-434 1XXX8XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-435 9XXX which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-436 1XXX which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-437 not yet reported which blocks → RCN TELECOM SERVICES OF ILLINOIS, LLC 511K EVANSVILLE IN
— 812-438 6XXX7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 RISING SUN IN
— 812-439 not yet reported which blocks → SPOK, INC. 6630 EVANSVILLE IN
— 812-441 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J PETERSBURG IN
— 812-442 3XXX4XXX · 2 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 BRAZIL IN
— 812-443 9XXX which blocks → FRONTIER NORTH, INC.. - IN 0772 BRAZIL IN
— 812-444 none assigned yet which blocks → DAVIESS MARTIN CTY RURL TEL DBA RTC COMMUNICATIONS 0759 MONTGOMERY IN
— 812-445 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 REDDINGTON IN
— 812-446 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 BRAZIL IN
— 812-447 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 COLUMBUS IN
— 812-448 0XXX7XXX · 2 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 BRAZIL IN
— 812-449 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVANSVILLE IN
— 812-450 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-451 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-452 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-453 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVANSVILLE IN
— 812-454 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 EVANSVILLE 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.