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 740
CENTURYLINK COMMUNICATIONS, LLC 122
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
2017-02-02 740-640-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BREMEN OH
2016-01-25 740-912-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WAVERLY OH
2015-07-31 740-489-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OLDWSHNGTN OH
2015-06-30 740-745-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST LOUISVL OH
2015-06-30 740-937-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOPEDALE OH
2015-05-27 740-763-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HANOVER OH
2015-05-27 740-787-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRATIOT OH
2015-05-27 740-920-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANVILLE OH
2015-05-26 740-510-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FAIRVIEW OH
2015-05-19 740-944-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BLOOMINGDL OH
2015-05-18 740-846-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COOLVILLE OH
2015-04-16 740-618-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWARK OH
2014-06-10 740-370-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORTSMOUTH OH
2014-06-10 740-945-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SCIO OH
2014-06-10 740-977-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PIKETON OH
2014-06-09 740-200-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KILBOURNE OH
2014-06-09 740-226-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEAVER OH
2014-06-09 740-247-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LETART FLS OH
2014-06-09 740-268-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RICHWOOD OH
2014-06-09 740-316-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BOWERSTON OH
2014-06-09 740-413-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASHLEY OH
2014-06-09 740-444-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J POMEROY OH
2014-06-09 740-465-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MORRAL OH
2014-06-09 740-494-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PROSPECT OH
2014-06-09 740-496-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARPSTER OH
2014-06-09 740-499-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LA RUE OH
2014-06-09 740-528-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREEN CAMP OH
2014-06-09 740-543-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AMSTERDAM OH
2014-06-09 740-595-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RADNOR OH
2014-06-09 740-598-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRILLIANT OH
2014-06-09 740-662-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GUYSVILLE OH
2014-06-09 740-664-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWMRSHFLD OH
2014-06-09 740-768-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BERGHOLZ OH
2014-06-09 740-843-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORTLAND OH
2014-06-09 740-938-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RATHBONE OH
2014-06-06 740-241-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BYESVILLE OH
2014-06-06 740-261-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWCONCORD OH
2014-06-06 740-267-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEWISVILLE OH
2014-06-06 740-293-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BARLOW OH
2014-06-06 740-379-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALNUT OH
2014-06-06 740-414-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IRONTON OH
2014-06-06 740-448-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AMESVILLE OH
2014-06-06 740-467-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILLERSPT OH
2014-06-06 740-468-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLEASANTVL OH
2014-06-06 740-492-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWCOMRSTN OH
2014-06-06 740-537-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TORONTO OH
2014-06-06 740-576-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STCLAIRSVL OH
2014-06-06 740-580-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHAWNEE OH
2014-06-06 740-585-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOWERSALEM OH
2014-06-06 740-608-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ATHENS OH

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.