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
2017-10-02 515-400-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-10-02 515-776-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-09-25 515-400-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2017-09-25 515-400-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2017-09-25 515-400-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2017-09-25 515-400-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2017-09-25 515-400-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2017-09-22 515-500-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BOONE IA
2017-09-14 515-204-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2017-09-13 515-206-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 FORT DODGE IA
2017-09-12 515-204-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2017-09-12 515-215-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEVADA IA
2017-09-11 515-500-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F BOONE IA
2017-09-07 515-381-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-09-05 515-364-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 GOLDFIELD IA
2017-08-31 515-350-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2017-08-29 515-735-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2017-08-22 515-348-9XXX 9000–9999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-08-17 515-206-0XXX 0000–0999Assigned INTEGRATED PATH COMMUNCATIONS, LLC - IA 544H FORT DODGE IA
2017-08-17 515-338-5XXX 5000–5999Assigned INTEGRATED PATH COMMUNCATIONS, LLC - IA 544H ELLSWORTH IA
2017-08-17 515-575-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F ALGONA IA
2017-08-17 515-789-5XXX 5000–5999Assigned INTEGRATED PATH COMMUNCATIONS, LLC - IA 544H DEXTER IA
2017-08-17 515-800-5XXX 5000–5999Assigned INTEGRATED PATH COMMUNCATIONS, LLC - IA 544H COLFAX IA
2017-08-17 515-834-5XXX 5000–5999Assigned INTEGRATED PATH COMMUNCATIONS, LLC - IA 544H DE SOTO IA
2017-08-15 515-200-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONA IA
2017-08-15 515-373-0XXX 0000–0999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F GILMORE CY IA
2017-08-14 515-204-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H DES MOINES IA
2017-08-08 515-381-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2017-07-24 515-870-8XXX 8000–8999Assigned INDEPENDENT NETWORKS, LLC 7215 SWEA CITY IA
2017-07-07 515-350-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DES MOINES IA
2017-07-07 515-381-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DES MOINES IA
2017-06-30 515-606-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WEBSTER CY IA
2017-06-29 515-348-8XXX 8000–8999Assigned AUREON COMMUNICATIONS, LLC 444G DES MOINES IA
2017-06-22 515-381-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2017-06-16 515-739-6XXX 6000–6999Assigned OMNITEL COMMUNICATIONS, INC. - IA 3620 WINTERSET IA
2017-06-16 515-739-7XXX 7000–7999Assigned OMNITEL COMMUNICATIONS, INC. - IA 3620 WINTERSET IA
2017-06-15 515-348-7XXX 7000–7999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-06-12 515-380-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-380-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-601-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-601-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-601-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-721-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-721-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-805-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-805-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-12 515-805-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-06-09 515-381-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-06-08 515-348-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2017-06-07 515-320-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALGONA 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.