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
2019-10-18 513-572-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-10-11 513-499-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2019-10-11 513-499-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2019-10-11 513-810-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2019-10-09 513-567-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2019-10-09 513-567-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2019-10-07 513-599-5XXX 5000–5999Assigned EXIANT COMMUNICATIONS LLC 114J CINCINNATI OH
2019-10-03 513-953-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2019-10-03 513-953-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2019-10-01 513-572-1XXX 1000–1999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F CINCINNATI OH
2019-09-24 513-866-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-09-24 513-866-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-09-24 513-866-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-09-24 513-866-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-09-10 513-597-1XXX 1000–1999Assigned TELNYX LLC 073H NEWTONSVL OH
2019-09-10 513-953-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2019-09-09 513-443-9XXX 9000–9999Assigned TELNYX LLC 073H BETHANY OH
2019-09-06 513-986-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2019-09-06 513-986-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2019-09-06 513-986-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2019-09-04 513-506-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C MONROE OH
2019-09-04 513-506-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MONROE OH
2019-09-03 513-514-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2019-08-05 513-993-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2019-07-11 513-525-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2019-07-09 513-599-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2019-07-09 513-599-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2019-07-08 513-572-0XXX 0000–0999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F CINCINNATI OH
2019-06-10 513-216-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 BETHEL OH
2019-05-28 513-717-3XXX 3000–3999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F SHANDON OH
2019-05-14 513-993-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-05-09 513-993-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-05-09 513-993-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-05-09 513-993-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-05-09 513-993-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-05-09 513-993-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2019-04-18 513-953-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2019-04-10 513-496-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEBANON OH
2019-03-19 513-567-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2019-03-19 513-866-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J CINCINNATI OH
2019-03-18 513-567-9XXX 9000–9999Assigned METROPCS, INC. 5562 MIDDLETOWN OH
2019-02-12 513-953-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2019-02-12 513-953-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2019-02-11 513-499-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2019-01-23 513-567-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2019-01-23 513-567-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2019-01-09 513-416-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2019-01-09 513-416-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2018-12-26 513-993-9XXX 9000–9999Assigned HD CARRIER LLC 321J CINCINNATI OH
2018-12-13 513-953-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON 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.