NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 812
INDIANA BELL TEL CO INC 133
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
— 812-384 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 BLOOMFIELD 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
— 812-428 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
— 812-433 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
— 812-450 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
— 812-456 0XXX1XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-461 0XXX1XXX6XXX7XXX8XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE 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
— 812-467 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
— 812-471 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE 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
— 812-479 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 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
— 812-488 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EVANSVILLE IN
— 812-526 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 EDINBURGH IN
— 812-540 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 XXXXXXXXXX IN
— 812-546 1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → INDIANA BELL TEL CO INC 9325 HOPE IN
— 812-547 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 TELL CITY IN
— 812-548 1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → INDIANA BELL TEL CO INC 9325 TELL CITY IN
— 812-567 0XXX1XXX2XXX3XXX5XXX6XXX7XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 TENNYSON IN
— 812-579 0XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 ELIZABTHTN IN
— 812-587 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 FLAT ROCK IN
— 812-597 2XXX3XXX6XXX8XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 MORGANTOWN IN
— 812-648 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → INDIANA BELL TEL CO INC 9325 DUGGER IN
— 812-649 0XXX1XXX3XXX7XXX8XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 ROCKPORT IN
— 812-665 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → INDIANA BELL TEL CO INC 9325 JASONVILLE IN
— 812-682 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → INDIANA BELL TEL CO INC 9325 NEWHARMONY IN
— 812-740 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 XXXXXXXXXX IN
— 812-783 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 SOLITUDE IN
— 812-828 5XXX6XXX which blocks → INDIANA BELL TEL CO INC 9325 SPENCER IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.