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
2012-12-05 513-609-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2012-12-05 513-609-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2012-11-30 513-667-1XXX 1000–1999Assigned NUSO, LLC 551G CINCINNATI OH
2012-11-23 513-773-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2012-11-02 513-280-9XXX 9000–9999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F OXFORD OH
2012-10-30 513-701-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MASON OH
2012-10-26 513-512-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2012-10-26 513-580-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2012-10-26 513-580-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2012-10-26 513-601-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2012-10-26 513-601-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2012-10-25 513-463-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2012-10-09 513-401-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-10-09 513-401-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-10-09 513-401-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-10-09 513-401-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-10-09 513-401-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-10-08 513-767-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2012-10-08 513-926-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2012-10-02 513-849-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2012-09-28 513-444-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2012-09-28 513-444-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2012-09-25 513-392-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MIDDLETOWN OH
2012-09-25 513-409-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEBANON OH
2012-09-25 513-427-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHEL OH
2012-09-25 513-900-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2012-09-19 513-402-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C MONROE OH
2012-09-19 513-428-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C TRENTON OH
2012-09-12 513-201-6XXX 6000–6999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F CLERMONT OH
2012-09-12 513-279-7XXX 7000–7999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F HARRISON OH
2012-09-12 513-296-3XXX 3000–3999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F REILY OH
2012-09-12 513-323-8XXX 8000–8999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F SHANDON OH
2012-09-12 513-392-7XXX 7000–7999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F MIDDLETOWN OH
2012-09-12 513-402-9XXX 9000–9999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F MONROE OH
2012-09-12 513-427-1XXX 1000–1999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F BETHEL OH
2012-09-12 513-428-3XXX 3000–3999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F TRENTON OH
2012-09-12 513-437-5XXX 5000–5999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F SEVEN MILE OH
2012-09-12 513-443-7XXX 7000–7999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F BETHANY OH
2012-09-12 513-456-8XXX 8000–8999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F NEWTONSVL OH
2012-09-12 513-492-0XXX 0000–0999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F MASON OH
2012-09-12 513-536-1XXX 1000–1999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F WILLIAMSBG OH
2012-09-12 513-716-3XXX 3000–3999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F LTL MIAMI OH
2012-09-12 513-858-0XXX 0000–0999Assigned CINBELL EXT TERR LLC DBA ALTAFIBER CONNECTED SVCS 600F HAMILTON OH
2012-09-07 513-773-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2012-09-06 513-713-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-09-06 513-713-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-09-06 513-713-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-09-06 513-713-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-09-06 513-713-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-09-06 513-713-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 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.