NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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, last 30 days — NPA 515
ONVOY, LLC - IA 5
AUREON COMMUNICATIONS, LLC 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 1
BANDWIDTH.COM CLEC, 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
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
2010-03-08 515-200-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F ALGONA IA
2010-03-08 515-200-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ALGONA IA
2010-03-08 515-212-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BOONE IA
2010-03-08 515-215-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F NEVADA IA
2010-03-08 515-272-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F SWEA CITY IA
2010-03-08 515-325-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 BLAIRSBURG IA
2010-03-08 515-328-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F RANDALL IA
2010-03-08 515-332-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F HUMBOLDT IA
2010-03-08 515-532-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CLARION IA
2010-03-08 515-604-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 HUMBOLDT IA
2010-03-08 515-733-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F STORY CITY IA
2010-03-05 515-344-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-03-05 515-344-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-03-05 515-650-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-03-03 515-209-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F WEBSTER CY IA
2010-03-03 515-212-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BOONE IA
2010-03-03 515-259-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-03-03 515-293-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F EAGLEGROVE IA
2010-03-03 515-302-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F FORT DODGE IA
2010-03-03 515-337-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F AMES IA
2010-03-03 515-442-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F INDIANOLA IA
2010-03-03 515-478-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F ADEL IA
2010-03-03 515-523-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F STUART IA
2010-03-03 515-532-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F CLARION IA
2010-03-03 515-635-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-03-03 515-674-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F COLFAX IA
2010-03-03 515-726-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F PERRY IA
2010-03-03 515-758-6XXX 6000–6999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F EARLHAM IA
2010-03-03 515-972-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F OTHO IA
2010-03-03 515-984-3XXX 3000–3999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F POLK CITY IA
2010-03-03 515-992-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DALLAS CTR IA
2010-03-03 515-996-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F VAN METER IA
2010-03-03 515-999-8XXX 8000–8999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F GRANGER IA
2010-03-02 515-228-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F SLATER IA
2010-03-02 515-481-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F PLEASANTVL IA
2010-03-02 515-789-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DEXTER IA
2010-03-02 515-795-5XXX 5000–5999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F MADRID IA
2010-03-02 515-833-4XXX 4000–4999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F REDFIELD IA
2010-03-02 515-834-3XXX 3000–3999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DE SOTO IA
2010-02-22 515-344-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-02-16 515-528-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-02-09 515-724-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2010-02-04 515-259-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-02-04 515-442-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E INDIANOLA IA
2010-02-04 515-468-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WINTERSET IA
2010-02-04 515-523-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E STUART IA
2010-02-04 515-966-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E RUNNELLS 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.