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
2010-11-09 513-430-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-11-09 513-430-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-11-09 513-430-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-11-09 513-430-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-11-09 513-430-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-11-03 513-575-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LTL MIAMI OH
2010-11-03 513-804-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2010-10-29 513-426-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2010-10-29 513-439-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2010-10-29 513-872-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2010-10-20 513-208-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-10-20 513-208-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-10-20 513-208-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-10-20 513-223-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-10-20 513-223-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-10-20 513-250-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-10-20 513-250-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-10-20 513-318-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MIDDLETOWN OH
2010-10-20 513-341-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2010-10-20 513-655-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-10-13 513-286-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2010-10-08 513-795-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2010-09-16 513-275-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2010-09-16 513-402-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MONROE OH
2010-09-16 513-453-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2010-09-09 513-439-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-09 513-439-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-09 513-439-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-09 513-439-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-09 513-439-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-09 513-439-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-09 513-439-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-09 513-439-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-09 513-439-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-09-02 513-855-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WAYNESVL OH
2010-08-10 513-767-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWTONSVL OH
2010-08-10 513-858-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2010-08-04 513-208-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-08-04 513-208-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-08-04 513-208-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-08-04 513-446-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2010-08-04 513-642-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2010-08-03 513-273-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F OXFORD OH
2010-08-03 513-323-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SHANDON OH
2010-08-03 513-899-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MORROW OH
2010-07-30 513-245-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2010-07-23 513-208-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2010-07-09 513-445-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2010-07-09 513-836-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEBANON OH
2010-07-08 513-201-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CLERMONT 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.