NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 515-236

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 515-236 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 515 blocks

Most active assignees, all time — NPA 515
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 4
BANDWIDTH.COM CLEC, LLC - IA 2
UNITED STATES CELLULAR - IA 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 1
LEVEL 3 COMMUNICATIONS, LLC - IA 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
2014-10-20 515-236-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 BOONE IA
2011-10-27 515-236-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 BOONE IA
2017-01-20 515-236-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BOONE IA
2012-05-01 515-236-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOONE IA
2020-01-09 515-236-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 BOONE IA
2017-05-09 515-236-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BOONE IA
2016-05-06 515-236-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 BOONE IA
2019-12-18 515-236-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BOONE IA
2016-03-22 515-236-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 BOONE IA
2014-02-13 515-236-9XXX 9000–9999Assigned AUREON COMMUNICATIONS, LLC 444G BOONE IA

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.