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
2018-05-02 513-514-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2018-05-02 513-514-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
2018-05-01 513-644-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2018-05-01 513-914-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2018-05-01 513-999-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2018-05-01 513-999-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2018-05-01 513-999-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2018-04-25 513-586-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-04-25 513-586-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-04-25 513-999-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-04-25 513-999-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-04-25 513-999-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-04-25 513-999-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2018-03-30 513-499-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K HAMILTON OH
2018-03-26 513-472-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MORROW OH
2018-03-23 513-514-1XXX 1000–1999Assigned WIDE VOICE, LLC - OH 765H CINCINNATI OH
2018-03-19 513-466-5XXX 5000–5999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2018-03-19 513-466-6XXX 6000–6999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2018-03-19 513-466-7XXX 7000–7999Assigned CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 309B MASON OH
2018-03-16 513-499-4XXX 4000–4999Assigned METROPCS, INC. 5562 HAMILTON OH
2018-03-16 513-999-3XXX 3000–3999Assigned METROPCS, INC. 5562 CINCINNATI OH
2018-03-16 513-999-4XXX 4000–4999Assigned METROPCS, INC. 5562 CINCINNATI OH
2018-03-13 513-506-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MONROE OH
2018-03-07 513-216-8XXX 8000–8999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F BETHEL OH
2018-03-06 513-493-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2018-02-23 513-506-0XXX 0000–0999Assigned PEERLESS NETWORK OF OHIO, LLC - OH 284F MONROE OH
2018-01-12 513-496-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEBANON OH
2018-01-05 513-525-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2017-11-22 513-434-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C REILY OH
2017-11-10 513-416-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MIDDLETOWN OH
2017-11-10 513-416-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MIDDLETOWN OH
2017-11-10 513-493-3XXX 3000–3999Assigned COMMIO, LLC 939H CINCINNATI OH
2017-11-03 513-493-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K CINCINNATI OH
2017-10-25 513-216-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 BETHEL OH
2017-10-02 513-999-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-09-28 513-968-0XXX 0000–0999Assigned METROPCS, INC. 5562 LEBANON OH
2017-09-28 513-968-1XXX 1000–1999Assigned METROPCS, INC. 5562 LEBANON OH
2017-09-21 513-968-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEBANON OH
2017-09-12 513-847-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K BETHANY OH
2017-08-30 513-986-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CLERMONT OH
2017-08-28 513-440-0XXX 0000–0999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2017-08-28 513-440-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C 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.