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
2019-08-06 515-815-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2019-06-20 515-217-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2019-06-11 515-706-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2019-06-05 515-620-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2019-05-28 515-695-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2019-05-24 515-217-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2019-05-21 515-206-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F FORT DODGE IA
2019-05-21 515-206-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F FORT DODGE IA
2019-05-20 515-706-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2019-05-20 515-706-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2019-05-20 515-706-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2019-05-20 515-706-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2019-05-17 515-351-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 GOWRIE IA
2019-05-14 515-516-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BLAIRSBURG IA
2019-05-06 515-706-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DES MOINES IA
2019-04-30 515-489-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E JEWELL IA
2019-04-15 515-575-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F ALGONA IA
2019-03-27 515-706-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2019-03-13 515-646-4XXX 4000–4999Assigned WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA 6103 LEDYARD IA
2019-01-23 515-452-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2019-01-23 515-452-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2019-01-23 515-452-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2019-01-23 515-452-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2019-01-23 515-452-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2019-01-14 515-452-0XXX 0000–0999Assigned AUREON COMMUNICATIONS, LLC 444G DES MOINES IA
2018-12-28 515-452-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DES MOINES IA
2018-12-28 515-452-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DES MOINES IA
2018-12-21 515-474-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WINTERSET IA
2018-12-06 515-732-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-12-06 515-732-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-12-06 515-732-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-12-06 515-732-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-11-30 515-732-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2018-11-01 515-410-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2018-10-23 515-302-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F FORT DODGE IA
2018-10-23 515-972-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F OTHO IA
2018-10-17 515-454-3XXX 3000–3999Assigned AUREON COMMUNICATIONS, LLC 444G STUART IA
2018-10-08 515-732-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-10-08 515-732-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2018-10-01 515-500-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BOONE IA
2018-09-28 515-217-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-09-28 515-217-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-09-28 515-217-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-09-28 515-217-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2018-09-12 515-676-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 BOUTON IA
2018-09-11 515-474-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 WINTERSET IA
2018-09-10 515-709-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOONE IA
2018-08-29 515-690-9XXX 9000–9999Assigned IMON COMMUNICATIONS, LLC - IA 695G INDIANOLA IA
2018-08-20 515-474-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WINTERSET IA
2018-08-15 515-620-5XXX 5000–5999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F AMES 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.