NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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
CORETEL NEW YORK, INC. - NY 24
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
2019-05-20 585-536-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 BATAVIA NY
2019-05-20 585-547-8XXX 8000–8999Assigned CORETEL NEW YORK, INC. - NY 1215 DARIEN NY
2019-05-20 585-664-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 BATAVIA NY
2019-05-20 585-664-7XXX 7000–7999Assigned CORETEL NEW YORK, INC. - NY 1215 BATAVIA NY
2019-05-20 585-842-4XXX 4000–4999Assigned CORETEL NEW YORK, INC. - NY 1215 LYNDONVL NY
2019-05-20 585-842-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 LYNDONVL NY
2019-05-20 585-842-7XXX 7000–7999Assigned CORETEL NEW YORK, INC. - NY 1215 LYNDONVL NY
2019-03-26 585-268-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 BELMONT NY
2019-03-26 585-322-8XXX 8000–8999Assigned CORETEL NEW YORK, INC. - NY 1215 BLISS NY
2019-03-26 585-466-9XXX 9000–9999Assigned CORETEL NEW YORK, INC. - NY 1215 ANGELICA NY
2019-03-26 585-536-3XXX 3000–3999Assigned CORETEL NEW YORK, INC. - NY 1215 BATAVIA NY
2019-03-26 585-547-4XXX 4000–4999Assigned CORETEL NEW YORK, INC. - NY 1215 DARIEN NY
2019-03-26 585-548-3XXX 3000–3999Assigned CORETEL NEW YORK, INC. - NY 1215 BYRON NY
2019-03-26 585-567-3XXX 3000–3999Assigned CORETEL NEW YORK, INC. - NY 1215 FILLMORE NY
2019-03-26 585-628-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 BELFAST NY
2019-03-26 585-652-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 EASTAURORA NY
2019-03-26 585-676-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 FRANKLINVL NY
2019-03-26 585-684-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 HOLLEY NY
2019-03-26 585-735-2XXX 2000–2999Assigned CORETEL NEW YORK, INC. - NY 1215 MIDDLEPORT NY
2019-03-26 585-774-6XXX 6000–6999Assigned CORETEL NEW YORK, INC. - NY 1215 ALBION NY
2019-03-26 585-937-8XXX 8000–8999Assigned CORETEL NEW YORK, INC. - NY 1215 ALDEN NY
2019-02-15 585-842-5XXX 5000–5999Assigned CORETEL NEW YORK, INC. - NY 1215 LYNDONVL NY
2019-02-15 585-940-0XXX 0000–0999Assigned CORETEL NEW YORK, INC. - NY 1215 LEICESTER NY
2019-02-15 585-990-0XXX 0000–0999Assigned CORETEL NEW YORK, INC. - NY 1215 NUNDA NY

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.