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
2018-08-15 515-815-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AMES IA
2018-08-10 515-420-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 POLK CITY IA
2018-08-10 515-478-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADEL IA
2018-08-10 515-531-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANGER IA
2018-08-10 515-620-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AMES IA
2018-08-10 515-620-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AMES IA
2018-08-10 515-726-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PERRY IA
2018-08-10 515-726-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PERRY IA
2018-08-10 515-800-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLFAX IA
2018-08-10 515-848-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLEASANTVL IA
2018-08-01 515-642-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 PERRY IA
2018-07-27 515-456-5XXX 5000–5999Assigned METROPCS, INC. 5562 BANCROFT IA
2018-07-27 515-477-4XXX 4000–4999Assigned METROPCS, INC. 5562 SWEA CITY IA
2018-07-27 515-497-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E PRAIRIE CY IA
2018-07-27 515-750-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DAWSON IA
2018-07-13 515-620-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2018-07-10 515-217-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-07-06 515-718-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-07-06 515-718-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-07-06 515-718-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-07-02 515-531-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E GRANGER IA
2018-06-21 515-718-0XXX 0000–0999Assigned METROPCS, INC. 5562 DES MOINES IA
2018-06-21 515-718-1XXX 1000–1999Assigned METROPCS, INC. 5562 DES MOINES IA
2018-06-21 515-718-2XXX 2000–2999Assigned METROPCS, INC. 5562 DES MOINES IA
2018-06-21 515-718-3XXX 3000–3999Assigned METROPCS, INC. 5562 DES MOINES IA
2018-06-21 515-718-4XXX 4000–4999Assigned METROPCS, INC. 5562 DES MOINES IA
2018-06-20 515-654-9XXX 9000–9999Assigned METROPCS, INC. 5562 WEBSTER CY IA
2018-06-18 515-582-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MADRID IA
2018-06-15 515-385-3XXX 3000–3999Assigned METROPCS, INC. 5562 CLARION IA
2018-06-15 515-391-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 JEFFERSON IA
2018-06-15 515-445-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HUXLEY IA
2018-06-13 515-620-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2018-06-13 515-718-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-06-13 515-718-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-06-12 515-206-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F FORT DODGE IA
2018-06-08 515-575-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALGONA IA
2018-06-08 515-949-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EAGLEGROVE IA
2018-06-05 515-500-4XXX 4000–4999Assigned METROPCS, INC. 5562 BOONE IA
2018-06-05 515-552-8XXX 8000–8999Assigned METROPCS, INC. 5562 INDIANOLA IA
2018-06-05 515-715-9XXX 9000–9999Assigned METROPCS, INC. 5562 AMES IA
2018-06-01 515-901-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-06-01 515-901-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 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.