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
2015-07-15 515-398-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2015-07-15 515-398-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2015-07-15 515-398-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2015-07-15 515-398-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2015-07-15 515-398-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2015-07-15 515-398-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2015-07-07 515-739-1XXX 1000–1999Assigned OMNITEL COMMUNICATIONS, INC. - IA 3620 WINTERSET IA
2015-07-06 515-215-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEVADA IA
2015-07-01 515-878-0XXX 0000–0999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-1XXX 1000–1999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-2XXX 2000–2999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-3XXX 3000–3999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-4XXX 4000–4999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-5XXX 5000–5999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-6XXX 6000–6999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-7XXX 7000–7999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-8XXX 8000–8999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-07-01 515-878-9XXX 9000–9999Assigned QWEST CORPORATION 9631 DES MOINES IA
2015-06-30 515-444-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2015-06-29 515-335-9XXX 9000–9999Assigned WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 STORY CITY IA
2015-06-29 515-934-9XXX 9000–9999Assigned WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 NEVADA IA
2015-06-23 515-444-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2015-06-23 515-444-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2015-06-23 515-444-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2015-06-09 515-517-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E EARLHAM IA
2015-06-05 515-444-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2015-06-05 515-444-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2015-06-05 515-444-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2015-06-04 515-212-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BOONE IA
2015-06-01 515-444-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2015-05-19 515-735-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2015-05-18 515-808-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANOLA IA
2015-05-18 515-972-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OTHO IA
2015-05-12 515-809-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2015-04-24 515-735-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AMES IA
2015-04-24 515-735-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AMES IA
2015-04-23 515-526-9XXX 9000–9999Assigned WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 REDFIELD IA
2015-04-23 515-585-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E VAN METER IA
2015-04-21 515-337-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E AMES IA
2015-04-21 515-428-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DAWSON IA
2015-04-21 515-497-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E PRAIRIE CY IA
2015-04-21 515-519-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E RUNNELLS IA
2015-04-15 515-329-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E POLK CITY IA
2015-04-15 515-329-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E POLK CITY IA
2015-04-15 515-599-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E GRANGER IA
2015-04-15 515-599-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E GRANGER IA
2015-04-15 515-705-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WINTERSET IA
2015-04-15 515-705-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WINTERSET IA
2015-04-13 515-631-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2015-03-30 515-717-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DALLAS CTR 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.