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 585
BANDWIDTH.COM CLEC, LLC - NY 277
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
2026-07-09 585-780-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2026-04-03 585-780-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2026-04-03 585-795-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2025-11-12 585-821-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E STANLEY NY
2023-01-03 585-215-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WYOMING NY
2022-11-29 585-575-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HONEOYE NY
2022-10-03 585-649-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2022-10-03 585-649-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2022-09-30 585-603-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2022-09-30 585-603-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2022-09-30 585-775-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2022-09-01 585-557-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2022-09-01 585-603-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2022-02-17 585-580-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ANGELICA NY
2022-01-24 585-608-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ANGELICA NY
2021-12-07 585-562-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ATTICA NY
2021-05-14 585-562-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ATTICA NY
2020-12-09 585-601-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HENRIETTA NY
2020-12-09 585-601-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HENRIETTA NY
2020-06-03 585-539-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CUBA NY
2020-04-14 585-496-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CHAFFEE NY
2020-03-19 585-508-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HOLCOMB NY
2020-03-19 585-515-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HILTON NY
2020-03-13 585-634-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E RUSHVILLE NY
2019-11-12 585-361-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E SHORTSVL NY
2019-06-13 585-450-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2019-06-13 585-450-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2019-05-01 585-504-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2019-05-01 585-504-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ROCHESTER NY
2019-04-29 585-252-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PAVILION NY
2019-03-25 585-577-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CANANDAGUA NY
2018-10-22 585-628-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BELFAST NY
2018-10-18 585-213-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WAYLAND NY
2018-09-18 585-628-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E BELFAST NY
2018-09-13 585-382-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LEICESTER NY
2018-09-04 585-440-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CHURCHVL NY
2018-08-27 585-308-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LE ROY NY
2018-08-27 585-332-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E LYNDONVL NY
2018-08-24 585-252-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E PAVILION NY
2018-08-24 585-460-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CALEDONIA NY
2018-08-20 585-558-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WARSAW NY
2018-08-20 585-667-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E WEBSTER NY
2018-07-31 585-386-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E ANGELICA NY
2018-05-10 585-446-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E W WEBSTER NY
2018-05-10 585-531-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E NAPLES NY
2018-05-10 585-805-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E EASTAURORA NY
2018-05-07 585-404-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E HENRIETTA NY
2018-05-01 585-384-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E COHOCTON NY
2018-05-01 585-443-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E GENESEO NY
2018-04-30 585-294-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NY 997E CALEDONIA NY

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.