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
2021-12-01 513-928-7XXX 7000–7999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2021-12-01 513-928-8XXX 8000–8999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2021-11-24 513-935-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C BETHANY OH
2021-11-24 513-935-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C BETHANY OH
2021-11-19 513-809-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C LEBANON OH
2021-11-09 513-278-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHEL OH
2021-11-09 513-935-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2021-11-09 513-935-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2021-11-01 513-879-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-879-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-879-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-879-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-879-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-879-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-879-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-879-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-879-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-928-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-928-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-11-01 513-928-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2021-10-22 513-822-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2021-10-21 513-822-2XXX 2000–2999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2021-10-21 513-822-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2021-10-21 513-822-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2021-10-21 513-822-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C MIDDLETOWN OH
2021-10-21 513-902-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2021-10-21 513-902-3XXX 3000–3999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2021-10-21 513-902-4XXX 4000–4999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2021-10-21 513-902-5XXX 5000–5999Assigned ONVOY, LLC - OH 464C CLERMONT OH
2021-10-13 513-653-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-10-13 513-743-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-10-13 513-778-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-10-13 513-778-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CINCINNATI OH
2021-09-14 513-567-7XXX 7000–7999Assigned COMMIO, LLC 939H MIDDLETOWN OH
2021-09-14 513-567-8XXX 8000–8999Assigned COMMIO, LLC 939H MIDDLETOWN OH
2021-09-14 513-783-9XXX 9000–9999Assigned COMMIO, LLC 939H MIDDLETOWN OH
2021-09-09 513-902-0XXX 0000–0999Assigned TELNYX LLC 073H CLERMONT OH
2021-09-07 513-743-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D CINCINNATI OH
2021-09-07 513-778-8XXX 8000–8999Assigned VONAGE AMERICA LLC 197D CINCINNATI OH
2021-09-07 513-778-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D CINCINNATI OH
2021-09-07 513-877-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J BUTLERVL OH
2021-09-02 513-327-4XXX 4000–4999Assigned TON80 COMMUNICATIONS, LLC 516J WILLIAMSBG OH
2021-08-10 513-848-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J MASON OH
2021-08-03 513-452-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C HARRISON OH
2021-07-27 513-270-0XXX 0000–0999Assigned ONVOY, LLC - OH 464C FELICITY OH
2021-07-27 513-270-1XXX 1000–1999Assigned ONVOY, LLC - OH 464C FELICITY OH
2021-07-27 513-848-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2021-07-27 513-848-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MASON OH
2021-07-19 513-837-9XXX 9000–9999Assigned ONVOY, LLC - OH 464C CINCINNATI OH
2021-07-01 513-547-6XXX 6000–6999Assigned ONVOY, LLC - OH 464C TRENTON 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.