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
2020-06-01 513-866-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2020-05-29 513-712-8XXX 8000–8999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F BETHANY OH
2020-05-29 513-995-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C BETHEL OH
2020-05-29 513-995-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C BETHEL OH
2020-05-26 513-443-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C BETHANY OH
2020-05-26 513-463-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C BETHANY OH
2020-05-26 513-496-0XXX 0000–0999Assigned ONVOY, LLC - OH 464C LEBANON OH
2020-05-26 513-496-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C LEBANON OH
2020-05-26 513-613-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C MORROW OH
2020-05-26 513-613-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C MORROW OH
2020-05-26 513-847-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C BETHANY OH
2020-05-19 513-567-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2020-04-30 513-540-0XXX 0000–0999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F MIDDLETOWN OH
2020-04-24 513-810-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2020-04-21 513-640-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LTL MIAMI OH
2020-04-21 513-810-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2020-04-20 513-540-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2020-04-20 513-540-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2020-04-20 513-540-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2020-04-20 513-540-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2020-04-17 513-663-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2020-04-17 513-663-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2020-04-01 513-663-8XXX 8000–8999Assigned HD CARRIER LLC 321J HAMILTON OH
2020-04-01 513-663-9XXX 9000–9999Assigned HD CARRIER LLC 321J HAMILTON OH
2020-03-30 513-506-9XXX 9000–9999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F MONROE OH
2020-03-25 513-436-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C WILLIAMSBG OH
2020-03-25 513-436-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C WILLIAMSBG OH
2020-03-25 513-654-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C SO LEBANON OH
2020-03-25 513-654-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C SO LEBANON OH
2020-03-25 513-756-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C REILY OH
2020-03-25 513-756-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C REILY OH
2020-03-25 513-810-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2020-03-25 513-810-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2020-03-25 513-810-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2020-03-25 513-982-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C SEVEN MILE OH
2020-03-25 513-982-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C SEVEN MILE OH
2020-03-24 513-463-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C BETHANY OH
2020-03-24 513-496-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C LEBANON OH
2020-03-24 513-496-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C LEBANON OH
2020-03-24 513-548-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MASON OH
2020-03-24 513-548-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C MASON OH
2020-03-24 513-597-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C NEWTONSVL OH
2020-03-24 513-597-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C NEWTONSVL OH
2020-03-24 513-613-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C MORROW OH
2020-03-24 513-613-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MORROW OH
2020-03-24 513-613-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C MORROW OH
2020-03-24 513-717-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C SHANDON OH
2020-03-24 513-796-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MORNINGSUN OH
2020-03-24 513-845-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C HARRISON OH
2020-03-24 513-845-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C HARRISON 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.