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
2018-08-13 513-416-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2018-08-13 513-916-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 OXFORD OH
2018-08-09 513-496-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEBANON OH
2018-08-03 513-547-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F TRENTON OH
2018-08-03 513-548-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2018-08-03 513-966-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2018-08-01 513-296-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F REILY OH
2018-08-01 513-798-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MORNINGSUN OH
2018-07-31 513-416-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MIDDLETOWN OH
2018-07-31 513-443-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2018-07-31 513-715-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HARRISON OH
2018-07-25 513-447-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SHANDON OH
2018-07-18 513-953-1XXX 1000–1999Assigned WIDE VOICE, LLC - OH 765H HAMILTON OH
2018-07-09 513-466-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 MASON OH
2018-06-29 513-499-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K HAMILTON OH
2018-06-29 513-538-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2018-06-29 513-538-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2018-06-28 513-216-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHEL OH
2018-06-27 513-538-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2018-06-27 513-538-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2018-06-27 513-538-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2018-06-27 513-538-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2018-06-25 513-506-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MONROE OH
2018-06-13 513-514-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-537-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-538-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-538-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-538-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-06-13 513-882-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-05-18 513-466-4XXX 4000–4999Assigned METROPCS, INC. 5562 MASON OH
2018-05-18 513-499-5XXX 5000–5999Assigned METROPCS, INC. 5562 HAMILTON OH
2018-05-18 513-499-6XXX 6000–6999Assigned METROPCS, INC. 5562 HAMILTON OH
2018-05-18 513-499-7XXX 7000–7999Assigned METROPCS, INC. 5562 HAMILTON OH
2018-05-18 513-514-3XXX 3000–3999Assigned METROPCS, INC. 5562 CINCINNATI OH
2018-05-18 513-514-4XXX 4000–4999Assigned METROPCS, INC. 5562 CINCINNATI OH
2018-05-18 513-514-5XXX 5000–5999Assigned METROPCS, INC. 5562 CINCINNATI OH
2018-05-18 513-514-6XXX 6000–6999Assigned METROPCS, INC. 5562 CINCINNATI OH
2018-05-18 513-514-7XXX 7000–7999Assigned METROPCS, INC. 5562 CINCINNATI OH
2018-05-04 513-472-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MORROW OH
2018-05-04 513-538-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D CINCINNATI OH
2018-05-04 513-901-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WILLIAMSBG OH
2018-05-02 513-216-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHEL 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.