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
2009-10-12 513-208-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-10-12 513-223-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-10-12 513-223-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-10-12 513-223-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-10-12 513-250-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-10-12 513-250-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-10-12 513-250-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-10-07 513-835-0XXX 0000–0999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F CINCINNATI OH
2009-09-25 513-649-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETOWN OH
2009-09-25 513-785-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2009-09-25 513-785-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2009-09-24 513-291-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2009-09-24 513-299-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2009-09-24 513-331-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2009-09-24 513-331-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2009-09-24 513-331-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2009-09-24 513-331-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2009-09-24 513-331-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2009-09-24 513-655-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-24 513-655-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-24 513-655-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-22 513-549-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-09-22 513-549-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-09-22 513-828-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-09-22 513-828-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-09-22 513-828-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2009-09-14 513-828-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-14 513-828-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-14 513-828-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-14 513-828-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-14 513-828-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-08 513-442-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-08 513-641-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-08 513-641-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-08 513-878-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-09-04 513-804-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2009-09-03 513-692-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2009-09-03 513-692-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2009-09-03 513-748-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2009-09-03 513-823-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2009-09-03 513-823-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2009-08-18 513-340-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2009-08-18 513-340-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2009-08-18 513-668-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2009-08-18 513-668-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2009-08-18 513-668-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2009-08-10 513-372-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-08-10 513-372-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-08-10 513-372-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2009-08-10 513-372-4XXX 4000–4999Assigned 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.