NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 515
MCC TELEPHONY OF IOWA, LLC - IA 90
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
2023-05-09 515-307-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F WILLIAMS IA
2021-02-11 515-755-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F WESLEY IA
2018-08-15 515-620-5XXX 5000–5999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F AMES IA
2018-06-12 515-206-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F FORT DODGE IA
2018-03-12 515-630-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-12 515-630-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-12 515-630-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-12 515-630-3XXX 3000–3999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-12 515-630-4XXX 4000–4999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-12 515-630-5XXX 5000–5999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-12 515-630-6XXX 6000–6999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-12 515-630-7XXX 7000–7999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-09 515-410-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-02-16 515-410-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-12-18 515-214-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-11-22 515-214-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-10-04 515-500-3XXX 3000–3999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BOONE IA
2017-09-07 515-381-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-08-22 515-348-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-08-15 515-373-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F GILMORE CY IA
2017-06-15 515-348-7XXX 7000–7999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-06-09 515-381-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-05-02 515-715-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F AMES IA
2017-04-26 515-348-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-01-31 515-381-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-01-13 515-381-3XXX 3000–3999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2013-04-01 515-330-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2013-03-25 515-330-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2012-07-23 515-207-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2012-03-27 515-578-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F LAKOTA IA
2011-08-25 515-619-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2011-08-25 515-777-3XXX 3000–3999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2011-05-16 515-777-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2011-05-16 515-777-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-12-22 515-528-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-12-22 515-528-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-04-16 515-765-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BANCROFT IA
2010-03-11 515-653-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BURT IA
2010-03-09 515-216-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-03-09 515-260-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F MOORLAND IA
2010-03-09 515-412-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-03-09 515-445-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F HUXLEY IA
2010-03-09 515-493-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F WINTERSET IA
2010-03-09 515-497-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F PRAIRIE CY IA
2010-03-09 515-519-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F RUNNELLS IA
2010-03-09 515-589-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F WOODWARD IA
2010-03-09 515-809-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-03-09 515-837-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BARNUM IA
2010-03-09 515-843-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F CLARE IA
2010-03-09 515-850-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.