NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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
CENTURYLINK COMMUNICATIONS, LLC 46
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
2019-03-18 256-692-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUNTSVILLE AL
2014-07-03 256-826-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHEFFIELD AL
2014-06-11 256-278-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ATHENS AL
2014-06-11 256-284-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FLORENCE AL
2014-06-11 256-287-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HANCEVILLE AL
2014-06-11 256-324-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RUSSELLVL AL
2014-06-11 256-333-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RED BAY AL
2014-06-11 256-410-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOULTON AL
2014-06-11 256-573-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TOWN CREEK AL
2014-06-11 256-576-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEIGHTON AL
2014-06-11 256-588-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KILLEN AL
2014-06-11 256-607-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROGERSVL AL
2014-06-11 256-667-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEXINGTON AL
2014-06-11 256-669-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COURTLAND AL
2014-06-11 256-812-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GURLEY AL
2014-06-11 256-813-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAZELGREEN AL
2014-04-07 256-670-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRIDGEPORT AL
2014-03-27 256-502-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARTSELLE AL
2014-03-20 256-781-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FRUITHURST AL
2014-03-20 256-906-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RANBURNE AL
2014-02-26 256-202-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GUNTERSVL AL
2014-02-26 256-281-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BOAZ AL
2014-02-26 256-304-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FORT PAYNE AL
2014-02-26 256-315-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TALLADEGA AL
2014-02-26 256-485-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GADSDEN AL
2014-02-26 256-581-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OHATCHEE AL
2014-02-26 256-600-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JACKSONVL AL
2014-02-26 256-645-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PIEDMONT AL
2014-02-26 256-660-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALBERTVL AL
2014-02-26 256-691-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ATTALLA AL
2014-02-26 256-745-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MUNFORD AL
2014-02-26 256-926-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HEFLIN AL
2014-02-25 256-408-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASHLAND AL
2014-02-25 256-414-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALEXANDRCY AL
2014-02-25 256-598-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHILDERSBG AL
2014-02-25 256-743-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GOODWATER AL
2014-02-25 256-853-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DADEVILLE AL
2014-02-24 256-872-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SYLACAUGA AL
2014-02-19 256-472-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VETO AL
2014-02-18 256-818-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FRANCISCO AL
2013-11-25 256-615-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CULLMAN AL
2013-10-31 256-686-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DECATUR AL
2013-10-31 256-724-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MADISON AL
2013-10-22 256-676-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ANNISTON AL
2013-09-09 256-912-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SCOTTSBORO AL
2013-04-16 256-203-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUNTSVILLE AL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.