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 620
CENTURYLINK COMMUNICATIONS, LLC 81
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
2014-04-15 620-203-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BURLINGTON KS
2014-03-04 620-256-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEBO KS
2014-02-25 620-784-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALTAMONT KS
2014-02-24 620-732-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DURHAM KS
2014-02-19 620-537-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUFFALO KS
2014-02-19 620-698-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BENEDICT KS
2014-02-18 620-633-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAFONTAINE KS
2014-02-18 620-839-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J THAYER KS
2014-02-13 620-206-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CEDAR VALE KS
2014-02-13 620-212-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHANUTE KS
2014-02-13 620-216-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SEDAN KS
2014-02-13 620-236-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHETOPA KS
2014-02-13 620-244-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ERIE KS
2014-02-13 620-270-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CANEY KS
2014-02-13 620-336-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHERRYVALE KS
2014-02-13 620-449-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST PAUL KS
2014-02-13 620-464-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COFFEYVL KS
2014-02-13 620-473-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUMBOLDT KS
2014-02-13 620-510-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SUBLETTE KS
2014-02-13 620-563-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLAINS KS
2014-02-13 620-605-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PARSONS KS
2014-02-13 620-608-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEODESHA KS
2014-02-13 620-625-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J YATES CTR KS
2014-02-13 620-647-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOLINE KS
2014-02-13 620-873-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MEADE KS
2014-02-13 620-885-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MINNEOLA KS
2014-02-13 620-901-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IOLA KS
2014-02-13 620-909-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SCOTT CITY KS
2014-02-13 620-956-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOWARD KS
2014-02-11 620-204-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STERLING KS
2014-02-11 620-207-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NICKERSON KS
2014-02-11 620-260-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GARDENCITY KS
2014-02-11 620-268-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STAFFORD KS
2014-02-11 620-349-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENSBURG KS
2014-02-11 620-392-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARTFORD KS
2014-02-11 620-400-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREAT BEND KS
2014-02-11 620-491-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KINGMAN KS
2014-02-11 620-501-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MEDICNLODG KS
2014-02-11 620-514-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WELLINGTON KS
2014-02-11 620-582-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COLDWATER KS
2014-02-11 620-604-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LIBERAL KS
2014-02-11 620-628-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CANTON KS
2014-02-11 620-646-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FOWLER KS
2014-02-11 620-680-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LYONS KS
2014-02-11 620-705-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WINFIELD KS
2014-02-11 620-714-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J INDEPNDNCE KS
2014-02-11 620-718-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MCPHERSON KS
2014-02-11 620-720-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PAWNEEROCK KS
2014-02-11 620-731-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J QUINCY KS
2014-02-11 620-804-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LARNED KS

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.