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 240
CENTURYLINK COMMUNICATIONS, LLC 33
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
2016-10-18 240-985-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILLIAMSPT MD
2016-10-18 240-998-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HANCOCK MD
2016-09-26 240-488-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OAKLAND MD
2016-09-26 240-609-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CUMBERLAND MD
2016-09-26 240-657-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FROSTBURG MD
2016-09-26 240-775-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WESTERNPT MD
2016-09-23 240-451-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J THURMONT MD
2016-09-23 240-908-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALKERSVL MD
2016-09-23 240-915-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEW MARKET MD
2016-09-22 240-436-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUCKEYSTN MD
2016-09-22 240-732-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOUNT AIRY MD
2016-09-22 240-816-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KEEDYSVL MD
2016-09-22 240-850-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAGERSTOWN MD
2016-09-22 240-870-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MIDDLETOWN MD
2016-09-22 240-913-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DAMASCS240 MD
2016-08-04 240-971-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FREDERICK MD
2016-03-02 240-781-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WSHNGTNZN2 MD
2014-05-27 240-782-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DAMASCS236 MD
2014-05-27 240-901-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LA PLATA MD
2014-05-27 240-903-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J INDIANHEAD MD
2014-05-23 240-509-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WSNG238Z14 MD
2014-05-14 240-258-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RIDGE MD
2014-05-14 240-339-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WSNG236Z15 MD
2014-05-14 240-466-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MECHANCSVL MD
2014-05-14 240-503-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TOMPKINSVL MD
2014-05-14 240-712-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAUREL238 MD
2014-05-14 240-837-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUGHESVL MD
2014-03-05 240-495-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WSHNGTNZN4 MD
2014-03-05 240-530-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALDORF MD
2014-03-05 240-716-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WSHNGTNZN5 MD
2013-08-05 240-616-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WSNG236Z13 MD
2013-08-01 240-459-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAUREL236 MD
2013-08-01 240-630-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WSHNGTNZN2 MD

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.