NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 515-348

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 515-348 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
MCC TELEPHONY OF IOWA, LLC - IA 3
LEVEL 3 COMMUNICATIONS, LLC - IA 2
AUREON COMMUNICATIONS, LLC 2
ONVOY, LLC - IA 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 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
2017-03-22 515-348-0XXX 0000–0999Assigned INTEGRATED PATH COMMUNCATIONS, LLC - IA 544H DES MOINES IA
2017-04-26 515-348-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-05-03 515-348-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2017-04-11 515-348-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2017-06-06 515-348-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2017-06-08 515-348-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2016-06-28 515-348-6XXX 6000–6999Assigned AUREON COMMUNICATIONS, LLC 444G DES MOINES IA
2017-06-15 515-348-7XXX 7000–7999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-06-29 515-348-8XXX 8000–8999Assigned AUREON COMMUNICATIONS, LLC 444G DES MOINES IA
2017-08-22 515-348-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES 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.