NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 228-471

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 228-471 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 228 blocks

Most active assignees, all time — NPA 228
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 3
TELEPAK NETWORKS, INC. - MS 2
TELNYX LLC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 1
LEVEL 3 COMMUNICATIONS, LLC - MS 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
2018-02-07 228-471-0XXX 0000–0999Assigned AIRUS, INC. - MS 459H PASCAGOULA MS
2008-04-22 228-471-1XXX 1000–1999Assigned TELEPAK NETWORKS, INC. - MS 5278 PASCAGOULA MS
2011-04-04 228-471-2XXX 2000–2999Assigned TELEPAK NETWORKS, INC. - MS 5278 PASCAGOULA MS
2006-11-22 228-471-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 PASCAGOULA MS
— 228-471-4XXX 4000–4999Reserved LEVEL 3 COMMUNICATIONS, LLC - MS 5178 PASCAGOULA MS
2010-07-29 228-471-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C PASCAGOULA MS
2024-10-23 228-471-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PASCAGOULA MS
2020-05-06 228-471-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PASCAGOULA MS
2019-11-06 228-471-8XXX 8000–8999Assigned TELNYX LLC 073H PASCAGOULA MS
2020-05-06 228-471-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 PASCAGOULA MS

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.