NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 937
BANDWIDTH.COM CLEC, LLC - OH 331
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
2024-05-28 937-772-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F URBANA OH
2022-10-02 937-345-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-10-02 937-345-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-07-21 937-345-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-07-21 937-345-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-07-21 937-345-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-07-21 937-345-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-07-21 937-345-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-07-20 937-809-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-07-20 937-809-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2022-03-23 937-819-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2022-02-25 937-945-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SOUTHSOLON OH
2022-02-24 937-538-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SIDNEY OH
2022-02-24 937-897-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SIDNEY OH
2022-02-23 937-819-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2022-02-23 937-819-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2022-02-09 937-820-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HILLSBORO OH
2022-02-02 937-819-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2022-02-02 937-819-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2022-02-02 937-897-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SIDNEY OH
2022-02-02 937-897-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SIDNEY OH
2022-01-25 937-894-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BOTKINS OH
2022-01-19 937-583-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F LEWISBURG OH
2022-01-19 937-666-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F E LIBERTY OH
2022-01-19 937-817-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CHRISTISBG OH
2022-01-19 937-883-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SOUTHSOLON OH
2022-01-19 937-905-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F WMANSFIELD OH
2022-01-19 937-909-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F FLTCHELENA OH
2022-01-19 937-970-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CEDARVILLE OH
2021-12-13 937-939-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F HILLSBORO OH
2021-10-29 937-897-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SIDNEY OH
2021-10-29 937-897-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SIDNEY OH
2021-08-11 937-893-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2021-08-11 937-893-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MARYSVILLE OH
2021-05-03 937-914-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F MSBGWCRLTN OH
2020-12-11 937-907-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CENTERVLLE OH
2020-12-11 937-907-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F CENTERVLLE OH
2020-08-12 937-918-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F VANDALIA OH
2020-07-15 937-706-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F SOCHARLETN OH
2020-07-15 937-790-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F FRANKLIN OH
2020-07-14 937-722-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F BELLEFNTAN OH
2020-03-16 937-400-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F JACKSONCTR OH
2019-12-12 937-739-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2019-12-12 937-739-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2019-12-12 937-739-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2019-12-12 937-739-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2019-12-12 937-739-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2019-12-12 937-739-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2019-12-12 937-739-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON OH
2019-12-12 937-739-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OH 001F DAYTON 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.