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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 812-455 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 EVANSVILLE IN
— 812-456 0XXX1XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-457 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVANSVILLE IN
— 812-458 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 BUTLERVL IN
— 812-459 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 EVANSVILLE IN
— 812-460 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 TERREHAUTE IN
— 812-461 0XXX1XXX6XXX7XXX8XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-462 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 TERREHAUTE IN
— 812-463 2XXX3XXX which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-464 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-465 2XXX which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-466 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 TERREHAUTE IN
— 812-467 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-468 4XXX9XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-469 0XXX9XXX which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-470 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 EVANSVILLE IN
— 812-471 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-472 0XXX1XXX2XXX4XXX5XXX6XXX · 4 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FREDECKSBG IN
— 812-473 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-474 8XXX which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-475 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-476 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-477 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-478 not yet reported which blocks → FRONTIER NORTH, INC.. - IN 0772 TERREHAUTE IN
— 812-479 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-480 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 EVANSVILLE IN
— 812-481 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 JASPER IN
— 812-482 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 JASPER IN
— 812-483 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 EVANSVILLE IN
— 812-484 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-485 0XXX9XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-486 none assigned yet which blocks → DAVIESS MARTIN CTY RURL TEL DBA RTC COMMUNICATIONS 0759 MONTGOMERY IN
— 812-487 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BRIGHTSPEED OF INDIANA, LLC 0832 GUILFORD IN
— 812-488 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-489 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 DALE IN
— 812-490 not yet reported which blocks → RCN TELECOM SERVICES OF ILLINOIS, LLC 511K EVANSVILLE IN
— 812-491 not yet reported which blocks → RCN TELECOM SERVICES OF ILLINOIS, LLC 511K EVANSVILLE IN
— 812-492 not yet reported which blocks → RCN TELECOM SERVICES OF ILLINOIS, LLC 511K EVANSVILLE IN
— 812-493 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON IN
— 812-494 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F VINCENNES IN
— 812-495 0XXX1XXX2XXX4XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC.. - IN 0772 LEWIS IN
— 812-496 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LAWRENCEBG IN
— 812-497 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - IN 0779 FREETOWN IN
— 812-499 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EVANSVILLE IN
— 812-505 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - IN 097D SHOALS IN
— 812-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IN
— 812-516 1XXX2XXX3XXX5XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F WORTHINGTN IN
— 812-518 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 NEWBURGH IN
— 812-520 not yet reported which blocks → PAETEC ITEL, LLC 829J MT VERNON IN
— 812-522 not yet reported which blocks → FRONTIER NORTH, INC. - IN 0779 SEYMOUR 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.