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
2005-08-12 515-537-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-08-12 515-537-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-08-12 515-537-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-08-11 515-230-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 BOONE IA
2005-07-29 515-401-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2005-07-29 515-559-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2005-07-27 515-418-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-07-27 515-418-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-07-27 515-537-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-07-15 515-985-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2005-07-05 515-401-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-07-05 515-401-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-07-05 515-537-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2005-06-20 515-419-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-06-10 515-450-5XXX 5000–5999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F AMES IA
2005-05-25 515-402-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2005-05-25 515-402-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2005-05-25 515-402-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2005-05-25 515-402-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2005-05-25 515-402-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2005-05-25 515-402-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2005-05-25 515-402-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2005-05-25 515-402-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2005-04-13 515-418-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-04-13 515-883-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-03-02 515-257-4XXX 4000–4999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2005-03-02 515-259-4XXX 4000–4999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2005-03-02 515-957-4XXX 4000–4999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2005-03-02 515-962-7XXX 7000–7999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F INDIANOLA IA
2005-03-02 515-978-4XXX 4000–4999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2005-02-18 515-418-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-02-01 515-418-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2005-02-01 515-418-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2005-01-14 515-418-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-01-14 515-418-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2005-01-11 515-557-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2005-01-11 515-633-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2004-12-30 515-598-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J AMES IA
2004-12-30 515-963-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2004-12-30 515-974-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2004-12-16 515-299-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2004-12-07 515-302-2XXX 2000–2999Assigned FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 FORT DODGE IA
2004-12-01 515-289-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2004-12-01 515-559-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2004-10-11 515-508-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2004-10-11 515-508-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2004-10-05 515-418-6XXX 6000–6999Assigned METROPCS, INC. 5562 DES MOINES IA
2004-10-05 515-419-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2004-09-24 515-324-0XXX 0000–0999Assigned QWEST CORPORATION 9631 DES MOINES IA
2004-09-24 515-324-1XXX 1000–1999Assigned QWEST CORPORATION 9631 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.