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 256
CORETEL ALABAMA, INC. - AL 129
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
2021-10-07 256-987-3XXX 3000–3999Assigned CORETEL ALABAMA, INC. - AL 476F GRAYSON AL
2021-04-01 256-833-5XXX 5000–5999Assigned CORETEL ALABAMA, INC. - AL 476F BRYANT AL
2019-05-16 256-463-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F HEFLIN AL
2019-05-16 256-926-3XXX 3000–3999Assigned CORETEL ALABAMA, INC. - AL 476F HEFLIN AL
2019-05-16 256-926-4XXX 4000–4999Assigned CORETEL ALABAMA, INC. - AL 476F HEFLIN AL
2019-05-02 256-440-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F FYFFE AL
2019-05-02 256-440-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F FYFFE AL
2019-05-02 256-449-5XXX 5000–5999Assigned CORETEL ALABAMA, INC. - AL 476F WOODLAND AL
2019-05-02 256-488-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F DELTA AL
2019-05-02 256-488-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F DELTA AL
2019-05-02 256-488-8XXX 8000–8999Assigned CORETEL ALABAMA, INC. - AL 476F DELTA AL
2019-05-02 256-579-4XXX 4000–4999Assigned CORETEL ALABAMA, INC. - AL 476F FRUITHURST AL
2019-05-02 256-579-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F FRUITHURST AL
2019-05-02 256-579-9XXX 9000–9999Assigned CORETEL ALABAMA, INC. - AL 476F FRUITHURST AL
2019-05-02 256-601-5XXX 5000–5999Assigned CORETEL ALABAMA, INC. - AL 476F FYFFE AL
2019-05-02 256-618-4XXX 4000–4999Assigned CORETEL ALABAMA, INC. - AL 476F ASHLAND AL
2019-05-02 256-618-5XXX 5000–5999Assigned CORETEL ALABAMA, INC. - AL 476F ASHLAND AL
2019-05-02 256-618-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F ASHLAND AL
2019-05-02 256-618-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F ASHLAND AL
2019-05-02 256-641-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F GERALDINE AL
2019-05-02 256-641-8XXX 8000–8999Assigned CORETEL ALABAMA, INC. - AL 476F GERALDINE AL
2019-05-02 256-641-9XXX 9000–9999Assigned CORETEL ALABAMA, INC. - AL 476F GERALDINE AL
2019-04-24 256-342-3XXX 3000–3999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-455-2XXX 2000–2999Assigned CORETEL ALABAMA, INC. - AL 476F ALBERTVL AL
2019-04-24 256-455-5XXX 5000–5999Assigned CORETEL ALABAMA, INC. - AL 476F ALBERTVL AL
2019-04-24 256-455-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F ALBERTVL AL
2019-04-24 256-455-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F ALBERTVL AL
2019-04-24 256-455-8XXX 8000–8999Assigned CORETEL ALABAMA, INC. - AL 476F ALBERTVL AL
2019-04-24 256-455-9XXX 9000–9999Assigned CORETEL ALABAMA, INC. - AL 476F ALBERTVL AL
2019-04-24 256-832-5XXX 5000–5999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-832-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-846-3XXX 3000–3999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-846-4XXX 4000–4999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-846-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-846-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-847-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-848-8XXX 8000–8999Assigned CORETEL ALABAMA, INC. - AL 476F ANNISTON AL
2019-04-24 256-901-5XXX 5000–5999Assigned CORETEL ALABAMA, INC. - AL 476F LINEVILLE AL
2019-04-24 256-901-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F LINEVILLE AL
2019-04-24 256-901-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F LINEVILLE AL
2019-04-05 256-223-5XXX 5000–5999Assigned CORETEL ALABAMA, INC. - AL 476F TALLADEGA AL
2019-04-05 256-254-2XXX 2000–2999Assigned CORETEL ALABAMA, INC. - AL 476F MENTONE AL
2019-04-05 256-254-3XXX 3000–3999Assigned CORETEL ALABAMA, INC. - AL 476F MENTONE AL
2019-04-05 256-254-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F MENTONE AL
2019-04-05 256-268-3XXX 3000–3999Assigned CORETEL ALABAMA, INC. - AL 476F TALLADEGA AL
2019-04-05 256-268-4XXX 4000–4999Assigned CORETEL ALABAMA, INC. - AL 476F TALLADEGA AL
2019-04-05 256-268-6XXX 6000–6999Assigned CORETEL ALABAMA, INC. - AL 476F TALLADEGA AL
2019-04-05 256-322-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F TALLADEGA AL
2019-04-05 256-363-4XXX 4000–4999Assigned CORETEL ALABAMA, INC. - AL 476F MRNSCRSRDS AL
2019-04-05 256-364-7XXX 7000–7999Assigned CORETEL ALABAMA, INC. - AL 476F FORT PAYNE AL

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.