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
2012-08-02 515-520-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2012-07-25 515-478-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E ADEL IA
2012-07-23 515-207-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2012-07-17 515-829-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2012-07-17 515-829-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2012-07-12 515-505-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2012-07-12 515-505-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2012-06-22 515-329-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E POLK CITY IA
2012-06-18 515-215-6XXX 6000–6999Assigned AUREON COMMUNICATIONS, LLC 444G NEVADA IA
2012-06-14 515-361-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 ALGONA IA
2012-06-11 515-598-1XXX 1000–1999Assigned AUREON COMMUNICATIONS, LLC 444G AMES IA
2012-06-01 515-493-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WINTERSET IA
2012-06-01 515-505-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2012-05-30 515-882-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E LUVERNE IA
2012-05-21 515-829-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2012-05-10 515-726-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E PERRY IA
2012-05-08 515-505-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2012-05-07 515-227-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORT DODGE IA
2012-05-01 515-236-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BOONE IA
2012-04-30 515-412-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2012-03-30 515-505-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-03-30 515-505-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-03-30 515-520-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AMES IA
2012-03-30 515-639-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-03-29 515-269-6XXX 6000–6999Assigned METROPCS, INC. 5562 FORT DODGE IA
2012-03-27 515-578-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F LAKOTA IA
2012-03-26 515-918-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-03-26 515-918-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-03-19 515-884-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WHITTEMORE IA
2012-03-19 515-890-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E HUMBOLDT IA
2012-03-08 515-200-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E ALGONA IA
2012-02-28 515-918-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-02-28 515-918-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-02-28 515-918-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-02-21 515-505-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2012-02-07 515-829-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2012-02-07 515-829-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2012-02-07 515-829-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2012-01-31 515-387-2XXX 2000–2999Assigned WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 MAXWELL IA
2012-01-12 515-854-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WILLIAMS IA
2012-01-11 515-605-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E RENWICK IA
2012-01-06 515-293-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E EAGLEGROVE IA
2011-12-28 515-421-4XXX 4000–4999Assigned AUREON COMMUNICATIONS, LLC 444G DES MOINES IA
2011-12-28 515-532-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CLARION IA
2011-12-19 515-310-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E JEWELL IA
2011-12-15 515-829-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2011-12-13 515-373-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E GILMORE CY IA
2011-11-28 515-325-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BLAIRSBURG IA
2011-11-21 515-412-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2011-11-21 515-639-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F 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.