NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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, all time — NPA 513
TELNYX LLC 33
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
2023-08-31 513-606-0XXX 0000–0999Assigned TELNYX LLC 073H MONROE OH
2023-06-29 513-962-0XXX 0000–0999Assigned TELNYX LLC 073H NEWTONSVL OH
2023-05-31 513-656-0XXX 0000–0999Assigned TELNYX LLC 073H CINCINNATI OH
2022-12-01 513-637-0XXX 0000–0999Assigned TELNYX LLC 073H MASON OH
2022-06-22 513-960-0XXX 0000–0999Assigned TELNYX LLC 073H HAMILTON OH
2022-04-11 513-949-0XXX 0000–0999Assigned TELNYX LLC 073H WAYNESVL OH
2021-09-09 513-902-0XXX 0000–0999Assigned TELNYX LLC 073H CLERMONT OH
2021-02-22 513-676-8XXX 8000–8999Assigned TELNYX LLC 073H BETHANY OH
2021-02-08 513-447-9XXX 9000–9999Assigned TELNYX LLC 073H SHANDON OH
2020-12-29 513-796-9XXX 9000–9999Assigned TELNYX LLC 073H MORNINGSUN OH
2020-12-29 513-839-8XXX 8000–8999Assigned TELNYX LLC 073H OXFORD OH
2020-12-16 513-548-1XXX 1000–1999Assigned TELNYX LLC 073H MASON OH
2020-12-16 513-613-1XXX 1000–1999Assigned TELNYX LLC 073H MORROW OH
2020-12-16 513-654-0XXX 0000–0999Assigned TELNYX LLC 073H SO LEBANON OH
2020-12-16 513-689-9XXX 9000–9999Assigned TELNYX LLC 073H LEBANON OH
2020-06-26 513-995-0XXX 0000–0999Assigned TELNYX LLC 073H BETHEL OH
2019-12-20 513-506-8XXX 8000–8999Assigned TELNYX LLC 073H MONROE OH
2019-12-20 513-757-8XXX 8000–8999Assigned TELNYX LLC 073H REILY OH
2019-09-10 513-597-1XXX 1000–1999Assigned TELNYX LLC 073H NEWTONSVL OH
2019-09-09 513-443-9XXX 9000–9999Assigned TELNYX LLC 073H BETHANY OH
2018-10-19 513-434-8XXX 8000–8999Assigned TELNYX LLC 073H REILY OH
2018-10-19 513-447-8XXX 8000–8999Assigned TELNYX LLC 073H SHANDON OH
2018-09-10 513-216-9XXX 9000–9999Assigned TELNYX LLC 073H BETHEL OH
2018-09-10 513-788-8XXX 8000–8999Assigned TELNYX LLC 073H HARRISON OH
2018-09-10 513-901-2XXX 2000–2999Assigned TELNYX LLC 073H WILLIAMSBG OH
2018-09-10 513-982-9XXX 9000–9999Assigned TELNYX LLC 073H SEVEN MILE OH
2017-03-29 513-449-8XXX 8000–8999Assigned TELNYX LLC 073H CLERMONT OH
2017-03-29 513-525-1XXX 1000–1999Assigned TELNYX LLC 073H HAMILTON OH
2017-03-29 513-966-1XXX 1000–1999Assigned TELNYX LLC 073H LTL MIAMI OH
2017-03-07 513-438-8XXX 8000–8999Assigned TELNYX LLC 073H MONROE OH
2017-03-07 513-468-5XXX 5000–5999Assigned TELNYX LLC 073H TRENTON OH
2017-03-03 513-997-5XXX 5000–5999Assigned TELNYX LLC 073H MIDDLETOWN OH
2016-12-30 513-914-3XXX 3000–3999Assigned TELNYX LLC 073H CINCINNATI OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.