NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2023-03-23 513-220-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2023-03-23 513-859-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2023-03-20 513-962-9XXX 9000–9999Assigned AT&T - LOCAL 7421 NEWTONSVL OH
2023-03-20 513-995-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C BETHEL OH
2023-03-16 513-738-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C SHANDON OH
2023-03-14 513-715-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C HARRISON OH
2023-03-13 513-992-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2023-03-10 513-220-1XXX 1000–1999Assigned SKYE TELECOM LLC DBA SKYETEL 622J CINCINNATI OH
2023-03-06 513-930-7XXX 7000–7999Assigned METROPCS, INC. 5562 CINCINNATI OH
2023-03-06 513-930-8XXX 8000–8999Assigned METROPCS, INC. 5562 CINCINNATI OH
2023-03-06 513-930-9XXX 9000–9999Assigned METROPCS, INC. 5562 CINCINNATI OH
2023-03-06 513-990-7XXX 7000–7999Assigned METROPCS, INC. 5562 HAMILTON OH
2023-03-06 513-990-8XXX 8000–8999Assigned METROPCS, INC. 5562 HAMILTON OH
2023-03-06 513-994-0XXX 0000–0999Assigned METROPCS, INC. 5562 MASON OH
2023-03-06 513-994-1XXX 1000–1999Assigned METROPCS, INC. 5562 MASON OH
2023-03-01 513-994-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C MASON OH
2023-03-01 513-994-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MASON OH
2023-03-01 513-994-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C MASON OH
2023-03-01 513-994-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C MASON OH
2023-02-28 513-992-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C LTL MIAMI OH
2023-02-28 513-992-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C LTL MIAMI OH
2023-02-28 513-992-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C LTL MIAMI OH
2023-02-28 513-992-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C LTL MIAMI OH
2023-02-27 513-637-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C MASON OH
2023-02-22 513-610-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C SEVEN MILE OH
2023-02-20 513-990-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C HAMILTON OH
2023-02-20 513-990-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C HAMILTON OH
2023-02-17 513-990-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H HAMILTON OH
2023-02-17 513-990-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H HAMILTON OH
2023-02-16 513-798-1XXX 1000–1999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MORNINGSUN OH
2023-02-08 513-278-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C BETHEL OH
2023-02-08 513-513-0XXX 0000–0999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-513-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2023-02-08 513-796-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MORNINGSUN OH
2023-02-08 513-980-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C OXFORD OH
2023-02-08 513-990-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2023-01-31 513-859-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2023-01-31 513-859-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2023-01-31 513-859-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2023-01-24 513-998-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C LTL MIAMI OH
2023-01-12 513-650-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2023-01-12 513-650-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.