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 978
CENTURYLINK COMMUNICATIONS, LLC 40
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
2014-12-16 978-999-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCKPORT MA
2014-05-16 978-402-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CONCORD MA
2014-05-16 978-439-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BILLERICA MA
2014-05-16 978-467-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WESTFORD MA
2014-05-16 978-471-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IPSWICH MA
2014-05-16 978-572-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWBURYPT MA
2014-05-16 978-730-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GARDNER MA
2014-05-16 978-865-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GLOUCESTER MA
2014-05-16 978-891-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAVERHILL MA
2014-05-16 978-910-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SALEM MA
2014-05-16 978-993-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEVERLY MA
2014-04-21 978-813-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHIRLEY MA
2014-03-27 978-321-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WINCHENDON MA
2014-03-27 978-558-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BOLTON MA
2014-03-27 978-668-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WESTMINSTR MA
2014-03-27 978-765-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLINTON MA
2014-03-27 978-928-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUBBARDSTN MA
2014-03-27 978-939-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TEMPLETON MA
2014-03-26 978-504-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AMESBURY MA
2014-03-26 978-639-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SUDBURY MA
2014-03-26 978-925-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PEPPERELL MA
2014-03-25 978-315-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILMINGTON MA
2014-03-25 978-346-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MERRIMAC MA
2014-03-25 978-506-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LITTLETON MA
2014-03-25 978-526-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MANCHESTER MA
2014-03-25 978-541-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ATHOL MA
2014-03-25 978-653-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HAMILTON MA
2014-03-25 978-708-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GROTON MA
2014-03-25 978-757-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AYER MA
2014-03-25 978-845-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NO READING MA
2014-03-25 978-883-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASHBURNHAM MA
2014-03-25 978-903-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROWLEY MA
2014-03-03 978-662-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ANDOVER MA
2013-11-20 978-566-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAWRENCE MA
2013-11-20 978-935-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOWELL MA
2013-08-28 978-456-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARVARD MA
2013-08-28 978-605-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DANVERS MA
2013-08-28 978-818-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PEABODY MA
2013-08-28 978-829-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FITCHBURG MA
2013-08-28 978-938-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MAYNARD MA

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.