NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 812-233

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 812-233 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 812 blocks

Most active assignees, all time — NPA 812
YMAX COMMUNICATIONS CORP. - IN 4
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 3
TELEPORT COMMUNICATIONS AMERICA, LLC - IN 1
LEVEL 3 COMMUNICATIONS, LLC - IN 1
FRONTIER NORTH, INC.. - IN 1
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-02-18 812-233-0XXX 0000–0999Assigned YMAX COMMUNICATIONS CORP. - IN 352E TERREHAUTE IN
2022-04-07 812-233-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 TERREHAUTE IN
2023-03-06 812-233-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 TERREHAUTE IN
2006-11-27 812-233-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IN 4803 TERREHAUTE IN
2011-02-18 812-233-4XXX 4000–4999Assigned YMAX COMMUNICATIONS CORP. - IN 352E TERREHAUTE IN
2011-02-22 812-233-5XXX 5000–5999Assigned YMAX COMMUNICATIONS CORP. - IN 352E TERREHAUTE IN
2010-03-09 812-233-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 TERREHAUTE IN
2011-02-22 812-233-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - IN 352E TERREHAUTE IN
— 812-233-8XXX 8000–8999Reserved FRONTIER NORTH, INC.. - IN 0772 TERREHAUTE IN
2025-01-15 812-233-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 TERREHAUTE IN

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.