NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 906
CENTURYLINK COMMUNICATIONS, LLC 32
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
2018-02-20 906-422-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MACKINACIS MI
2018-02-07 906-670-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WATERSMEET MI
2018-02-07 906-813-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BERGLAND MI
2018-02-06 906-253-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SALTSTMARI MI
2018-02-06 906-295-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POWERS MI
2018-02-06 906-356-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCK MI
2018-02-06 906-569-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TROUT LAKE MI
2018-02-06 906-661-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AMASA MI
2018-02-06 906-680-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WAKEFIELD MI
2018-02-06 906-762-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWBERRY MI
2018-02-06 906-970-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NORWAY MI
2018-02-06 906-984-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST IGNACE MI
2018-02-05 906-242-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEGAUNEE MI
2018-02-05 906-275-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOUGHTON MI
2018-02-05 906-284-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IRON RIVER MI
2018-02-05 906-289-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KEWEENAW MI
2018-02-05 906-323-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MICHIGAMME MI
2018-02-05 906-352-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MENOMINEE MI
2018-02-05 906-372-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GWINN MI
2018-02-05 906-448-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IRON MT MI
2018-02-05 906-486-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ISHPEMING MI
2018-02-05 906-498-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HERMANSVL MI
2018-02-05 906-675-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IRONWOOD MI
2018-02-02 906-212-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ESCANABA MI
2018-02-02 906-287-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ENGADINE MI
2018-02-02 906-292-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BREVORT MI
2018-02-02 906-345-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BIG BAY MI
2018-02-02 906-542-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHANNING MI
2018-02-02 906-825-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GLADSTONE MI
2018-02-02 906-875-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CRYSTALFLS MI
2018-02-02 906-934-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CALUMET MI
2018-01-02 906-205-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARQUETTE MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.