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
2011-07-18 513-391-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-18 513-391-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-13 513-384-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-13 513-384-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-13 513-384-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-13 513-384-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-13 513-384-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-13 513-384-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-13 513-384-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-07-06 513-462-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-07-06 513-462-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-306-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-306-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-306-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-306-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-370-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-370-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-370-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-370-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-370-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-370-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-06-30 513-649-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETOWN OH
2011-06-14 513-384-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2011-06-14 513-384-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2011-06-14 513-384-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2011-06-07 513-306-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2011-06-07 513-318-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MIDDLETOWN OH
2011-06-07 513-392-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MIDDLETOWN OH
2011-06-07 513-443-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2011-06-07 513-445-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2011-06-07 513-645-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2011-06-07 513-645-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2011-06-07 513-685-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CLERMONT OH
2011-06-03 513-356-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-06-03 513-356-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-06-03 513-356-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-06-03 513-356-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-06-03 513-356-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-06-03 513-370-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2011-06-03 513-370-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2011-06-03 513-370-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2011-05-27 513-306-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 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.