NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2021-04-02 513-764-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-04-02 513-764-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-04-02 513-764-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-04-02 513-764-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-04-02 513-764-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-04-02 513-764-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-04-02 513-764-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-04-02 513-764-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-03-31 513-596-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2021-03-31 513-596-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
2021-03-31 513-822-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2021-03-30 513-837-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-03-30 513-837-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-03-30 513-837-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-03-30 513-837-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-03-25 513-279-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C HARRISON OH
2021-03-25 513-715-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C HARRISON OH
2021-03-23 513-790-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C HAMILTON OH
2021-03-10 513-270-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C FELICITY OH
2021-03-10 513-270-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C FELICITY OH
2021-03-10 513-547-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C TRENTON OH
2021-03-10 513-547-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C TRENTON OH
2021-03-05 513-294-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C NEWTONSVL OH
2021-03-05 513-299-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C SEVEN MILE OH
2021-03-05 513-299-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C SEVEN MILE OH
2021-03-05 513-750-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2021-03-05 513-750-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2021-02-23 513-837-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OH 4863 CINCINNATI OH
2021-02-22 513-676-8XXX 8000–8999Assigned TELNYX LLC 073H BETHANY OH
2021-02-16 513-790-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HAMILTON OH
2021-02-11 513-837-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J CINCINNATI OH
2021-02-10 513-796-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C MORNINGSUN OH
2021-02-10 513-796-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C MORNINGSUN OH
2021-02-10 513-995-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C BETHEL OH
2021-02-10 513-995-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C BETHEL OH
2021-02-08 513-447-9XXX 9000–9999Assigned TELNYX LLC 073H SHANDON OH
2021-02-01 513-676-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C BETHANY OH
2021-02-01 513-676-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C BETHANY OH
2021-02-01 513-676-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C BETHANY OH
2021-02-01 513-676-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C BETHANY OH
2021-01-28 513-809-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2021-01-28 513-809-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LEBANON OH
2021-01-28 513-822-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MIDDLETOWN OH
2021-01-28 513-822-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MIDDLETOWN OH
2021-01-27 513-778-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-01-27 513-778-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-01-27 513-778-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-01-27 513-778-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-01-27 513-778-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-01-25 513-689-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LEBANON OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.