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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2010-09-08 515-337-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E AMES IA
2010-09-08 515-412-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-08-24 515-337-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F AMES IA
2010-08-06 515-509-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2010-07-22 515-708-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AMES IA
2010-07-19 515-978-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2010-07-14 515-657-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-07-14 515-661-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-07-14 515-954-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-07-14 515-954-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-07-07 515-802-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-07-07 515-802-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-07-02 515-782-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-07-02 515-782-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2010-06-17 515-259-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2010-06-11 515-259-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2010-06-03 515-212-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E BOONE IA
2010-06-03 515-337-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E AMES IA
2010-06-03 515-635-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-06-03 515-650-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-06-03 515-650-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-06-03 515-650-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-06-03 515-650-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2010-05-24 515-509-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2010-05-11 515-441-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AMES IA
2010-05-07 515-535-0XXX 0000–0999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-1XXX 1000–1999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-2XXX 2000–2999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-3XXX 3000–3999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-4XXX 4000–4999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-5XXX 5000–5999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-6XXX 6000–6999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-7XXX 7000–7999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-8XXX 8000–8999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-05-07 515-535-9XXX 9000–9999Assigned QWEST CORPORATION 9631 DES MOINES IA
2010-04-16 515-765-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BANCROFT IA
2010-03-19 515-657-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2010-03-11 515-653-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BURT IA
2010-03-10 515-705-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WINTERSET IA
2010-03-09 515-216-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-03-09 515-260-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F MOORLAND IA
2010-03-09 515-412-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2010-03-09 515-445-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F HUXLEY IA
2010-03-09 515-493-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F WINTERSET IA
2010-03-09 515-497-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F PRAIRIE CY IA
2010-03-09 515-519-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F RUNNELLS IA
2010-03-09 515-589-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F WOODWARD IA
2010-03-09 515-724-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2010-03-09 515-724-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J DES MOINES IA
2010-03-09 515-809-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F 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.