NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 513
BANDWIDTH.COM CLEC, LLC - OH 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
2008-01-11 513-628-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2008-01-11 513-869-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2008-01-09 513-492-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K MASON OH
2008-01-04 513-291-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2008-01-04 513-291-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2007-12-31 513-206-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2007-12-28 513-393-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETOWN OH
2007-12-26 513-331-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2007-12-26 513-331-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2007-12-26 513-376-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2007-12-26 513-387-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2007-12-26 513-432-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2007-12-26 513-432-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2007-12-26 513-488-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2007-12-14 513-593-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OXFORD OH
2007-12-07 513-234-7XXX 7000–7999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-12-07 513-843-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K CLERMONT OH
2007-12-07 513-869-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2007-12-06 513-204-1XXX 1000–1999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2007-12-05 513-432-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2007-12-05 513-432-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2007-12-05 513-432-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2007-12-05 513-432-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2007-12-05 513-432-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2007-12-05 513-432-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2007-12-03 513-845-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C HARRISON OH
2007-11-20 513-429-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2007-11-14 513-429-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2007-11-14 513-429-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2007-10-31 513-372-3XXX 3000–3999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-0XXX 0000–0999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-1XXX 1000–1999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-2XXX 2000–2999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-3XXX 3000–3999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-4XXX 4000–4999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-5XXX 5000–5999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-6XXX 6000–6999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-7XXX 7000–7999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-8XXX 8000–8999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-862-9XXX 9000–9999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-0XXX 0000–0999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-1XXX 1000–1999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-2XXX 2000–2999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-3XXX 3000–3999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-4XXX 4000–4999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-5XXX 5000–5999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-6XXX 6000–6999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-7XXX 7000–7999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-8XXX 8000–8999Assigned CINCINNATI BELL 9348 CINCINNATI OH
2007-10-31 513-865-9XXX 9000–9999Assigned CINCINNATI BELL 9348 CINCINNATI OH

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.