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
2018-03-12 515-630-6XXX 6000–6999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-12 515-630-7XXX 7000–7999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-09 515-410-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-03-07 515-719-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TITONKA IA
2018-03-07 515-744-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RADCLIFFE IA
2018-03-07 515-744-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RADCLIFFE IA
2018-03-06 515-385-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLARION IA
2018-03-06 515-902-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HUMBOLDT IA
2018-03-02 515-387-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MAXWELL IA
2018-03-02 515-388-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROLAND IA
2018-03-02 515-388-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ROLAND IA
2018-03-02 515-434-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MCCALLSBG IA
2018-03-02 515-434-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MCCALLSBG IA
2018-03-01 515-206-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FORT DODGE IA
2018-03-01 515-206-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FORT DODGE IA
2018-03-01 515-332-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HUMBOLDT IA
2018-03-01 515-361-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALGONA IA
2018-03-01 515-361-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALGONA IA
2018-03-01 515-602-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLARION IA
2018-03-01 515-603-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EAGLEGROVE IA
2018-03-01 515-606-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WEBSTER CY IA
2018-02-16 515-410-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2018-02-02 515-410-9XXX 9000–9999Assigned AUREON COMMUNICATIONS, LLC 444G DES MOINES IA
2018-01-31 515-219-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F ADEL IA
2018-01-31 515-579-9XXX 9000–9999Assigned WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 SLATER IA
2018-01-25 515-410-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2017-12-21 515-214-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-21 515-214-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-21 515-214-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-21 515-214-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-21 515-214-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-21 515-214-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-21 515-214-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-21 515-214-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-21 515-400-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-12-18 515-214-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-12-11 515-934-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEVADA IA
2017-11-28 515-400-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2017-11-22 515-214-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2017-11-21 515-855-8XXX 8000–8999Assigned AUREON COMMUNICATIONS, LLC 444G BUCKEYE IA
2017-10-25 515-585-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F VAN METER IA
2017-10-04 515-500-3XXX 3000–3999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F BOONE IA
2017-10-02 515-204-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-10-02 515-204-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-10-02 515-204-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-10-02 515-204-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-10-02 515-204-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-10-02 515-204-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-10-02 515-204-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2017-10-02 515-400-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 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.