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
COMMIO, LLC 19
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
2024-02-02 256-343-7XXX 7000–7999Assigned COMMIO, LLC 939H ANNISTON AL
2024-02-02 256-405-2XXX 2000–2999Assigned COMMIO, LLC 939H ANNISTON AL
2024-02-02 256-525-3XXX 3000–3999Assigned COMMIO, LLC 939H ANNISTON AL
2022-11-17 256-328-8XXX 8000–8999Assigned COMMIO, LLC 939H GADSDEN AL
2022-11-03 256-222-8XXX 8000–8999Assigned COMMIO, LLC 939H SHEFFIELD AL
2022-11-01 256-226-8XXX 8000–8999Assigned COMMIO, LLC 939H ALBERTVL AL
2022-09-29 256-981-0XXX 0000–0999Assigned COMMIO, LLC 939H CULLMAN AL
2022-07-15 256-308-4XXX 4000–4999Assigned COMMIO, LLC 939H DECATUR AL
2022-06-28 256-465-9XXX 9000–9999Assigned COMMIO, LLC 939H FORT PAYNE AL
2022-06-28 256-879-1XXX 1000–1999Assigned COMMIO, LLC 939H SYLACAUGA AL
2022-06-28 256-940-5XXX 5000–5999Assigned COMMIO, LLC 939H JACKSONVL AL
2022-05-24 256-215-8XXX 8000–8999Assigned COMMIO, LLC 939H ALEXANDRCY AL
2021-11-11 256-956-0XXX 0000–0999Assigned COMMIO, LLC 939H FLORENCE AL
2021-11-11 256-956-1XXX 1000–1999Assigned COMMIO, LLC 939H FLORENCE AL
2021-10-27 256-377-0XXX 0000–0999Assigned COMMIO, LLC 939H ROCKFORD AL
2021-10-27 256-935-6XXX 6000–6999Assigned COMMIO, LLC 939H ROCKFORD AL
2021-08-17 256-897-0XXX 0000–0999Assigned COMMIO, LLC 939H COURTLAND AL
2021-08-17 256-897-1XXX 1000–1999Assigned COMMIO, LLC 939H COURTLAND AL
2021-08-17 256-897-8XXX 8000–8999Assigned COMMIO, LLC 939H COURTLAND 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.