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
2011-03-23 515-777-7XXX 7000–7999Assigned AUREON COMMUNICATIONS, LLC 444G DES MOINES IA
2011-03-17 515-269-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FORT DODGE IA
2011-03-17 515-337-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AMES IA
2011-03-17 515-421-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2011-03-17 515-421-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2011-03-17 515-421-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2011-03-17 515-421-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2011-03-04 515-318-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-04 515-318-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-04 515-318-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-04 515-318-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-04 515-318-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-03 515-708-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AMES IA
2011-03-03 515-817-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AMES IA
2011-02-17 515-650-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-02-17 515-650-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-02-17 515-650-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-02-17 515-650-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-02-14 515-598-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J AMES IA
2011-02-10 515-412-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2011-01-10 515-302-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FORT DODGE IA
2011-01-06 515-661-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-01-06 515-661-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-01-06 515-724-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-01-06 515-802-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-01-06 515-802-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-12-28 515-802-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 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
2010-12-08 515-421-1XXX 1000–1999Assigned WINDSTREAM IT-COMM, LLC - IA 938D DES MOINES IA
2010-12-08 515-619-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2010-11-19 515-605-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F RENWICK IA
2010-11-11 515-528-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2010-11-05 515-528-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2010-11-05 515-528-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2010-11-05 515-528-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2010-11-05 515-528-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2010-11-05 515-528-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2010-11-05 515-528-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2010-11-02 515-388-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ROLAND IA
2010-11-02 515-635-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-11-02 515-802-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-11-01 515-802-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2010-10-22 515-657-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2010-10-21 515-635-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2010-10-04 515-573-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 FORT DODGE IA
2010-09-17 515-782-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-09-17 515-782-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-09-16 515-802-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-09-08 515-212-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E 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.