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
— 812-829 9XXX which blocks → INDIANA BELL TEL CO INC 9325 SPENCER IN
— 812-831 0XXX3XXX8XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 MT VERNON IN
— 812-833 1XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 MT VERNON IN
— 812-834 0XXX which blocks → INDIANA BELL TEL CO INC 9325 HELTONVL IN
— 812-838 none assigned yet which blocks → INDIANA BELL TEL CO INC 9325 MT VERNON IN
— 812-842 1XXX6XXX7XXX8XXX which blocks → INDIANA BELL TEL CO INC 9325 NEWBURGH IN
— 812-847 1XXX which blocks → INDIANA BELL TEL CO INC 9325 LINTON IN
— 812-853 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEWBURGH IN
— 812-855 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-856 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-857 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 BLOOMINGTN IN
— 812-858 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEWBURGH IN
— 812-867 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 MCUTCHANVL IN
— 812-868 3XXX4XXX7XXX9XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 MCUTCHANVL IN
— 812-882 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 VINCENNES IN
— 812-885 4XXX9XXX which blocks → INDIANA BELL TEL CO INC 9325 VINCENNES IN
— 812-886 8XXX which blocks → INDIANA BELL TEL CO INC 9325 VINCENNES IN
— 812-888 1XXX8XXX9XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 VINCENNES IN
— 812-895 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 VINCENNES IN
— 812-897 9XXX which blocks → INDIANA BELL TEL CO INC 9325 BOONVILLE IN
— 812-923 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 GALENA IN
— 812-925 0XXX1XXX2XXX5XXX9XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 CHANDLER IN
— 812-937 0XXX1XXX6XXX8XXX · 2 holders which blocks → INDIANA BELL TEL CO INC 9325 DALE IN
— 812-941 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-944 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-945 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-948 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-949 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-963 2XXX4XXX which blocks → INDIANA BELL TEL CO INC 9325 ST JOSEPH IN
— 812-970 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 XXXXXXXXXX IN
— 812-981 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NEW ALBANY IN
— 812-985 1XXX6XXX8XXX · 3 holders which blocks → INDIANA BELL TEL CO INC 9325 ST PHILIP IN
— 812-988 not yet reported which blocks → INDIANA BELL TEL CO INC 9325 NASHVILLE 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.