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
2013-07-31 515-330-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-07-31 515-330-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-07-31 515-986-8XXX 8000–8999Assigned QWEST CORPORATION 9631 DES MOINES IA
2013-07-30 515-330-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2013-07-30 515-330-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2013-07-30 515-512-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2013-07-17 515-642-0XXX 0000–0999Assigned MINBURN TELEPHONE COMPANY - IA 143H PERRY IA
2013-07-17 515-642-6XXX 6000–6999Assigned MINBURN TELEPHONE COMPANY - IA 143H PERRY IA
2013-07-02 515-330-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2013-06-21 515-227-7XXX 7000–7999Assigned AUREON COMMUNICATIONS, LLC 444G FORT DODGE IA
2013-06-19 515-330-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-06-19 515-330-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-06-19 515-709-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 BOONE IA
2013-06-18 515-218-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2013-06-18 515-218-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2013-06-18 515-218-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2013-06-05 515-218-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-06-05 515-218-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-05-16 515-393-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2013-04-29 515-218-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-04-29 515-218-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-04-29 515-338-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 ELLSWORTH IA
2013-04-17 515-351-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 GOWRIE IA
2013-04-11 515-357-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2013-04-11 515-393-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2013-04-01 515-330-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2013-03-26 515-817-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 AMES IA
2013-03-25 515-330-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2013-03-21 515-986-6XXX 6000–6999Assigned QWEST CORPORATION 9631 DES MOINES IA
2013-03-19 515-388-8XXX 8000–8999Assigned AUREON COMMUNICATIONS, LLC 444G ROLAND IA
2013-03-18 515-520-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E AMES IA
2013-03-13 515-357-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2013-03-08 515-393-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-03-08 515-393-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-03-08 515-393-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2013-03-05 515-298-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F BOONE IA
2013-03-05 515-303-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F INDIANOLA IA
2013-03-05 515-478-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F ADEL IA
2013-03-05 515-518-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2013-03-05 515-523-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F STUART IA
2013-03-05 515-575-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F ALGONA IA
2013-03-05 515-631-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2013-03-05 515-639-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2013-03-05 515-708-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AMES IA
2013-03-05 515-758-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F EARLHAM IA
2013-03-05 515-854-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F WILLIAMS IA
2013-03-05 515-884-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F WHITTEMORE IA
2013-02-22 515-393-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2013-01-31 515-835-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WEBSTER CY IA
2013-01-30 515-441-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 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.