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 810
CENTURYLINK COMMUNICATIONS, LLC 39
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
2014-08-29 810-445-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANDBLANC MI
2014-06-12 810-310-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CAPAC MI
2014-06-12 810-662-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORT HURON MI
2014-04-29 810-510-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COLUMBIAVL MI
2014-04-16 810-279-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARTLAND MI
2014-03-05 810-201-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PT SANILAC MI
2014-03-05 810-212-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J METAMORA MI
2014-03-05 810-258-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RANKIN MI
2014-03-05 810-270-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NORTH BRCH MI
2014-03-05 810-374-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OTISVILLE MI
2014-03-05 810-881-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PECK MI
2014-03-04 810-325-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GOODELLS MI
2014-03-04 810-326-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST CLAIR MI
2014-03-04 810-327-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JEDDO MI
2014-03-04 810-373-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FENTON MI
2014-03-04 810-462-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J YALE MI
2014-03-04 810-525-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EMMETT MI
2014-03-04 810-535-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MEMPHIS MI
2014-03-04 810-641-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SNOVER MI
2014-03-04 810-676-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARINECITY MI
2014-03-04 810-696-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEXINGTON MI
2014-03-04 810-867-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FLUSHING MI
2014-03-04 810-891-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SANDUSKY MI
2014-03-04 810-957-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LINDEN MI
2014-03-04 810-969-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAPEER MI
2014-02-24 810-209-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BYRON MI
2014-02-24 810-366-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DECKERVL MI
2014-02-24 810-368-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLIMTMORRS MI
2014-02-24 810-375-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DRYDEN MI
2014-02-24 810-475-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BROWN CITY MI
2014-02-24 810-544-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARSONVL MI
2014-02-24 810-546-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CROSWELL MI
2014-02-24 810-652-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DAVISON MI
2014-02-24 810-674-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J APPLEGATE MI
2014-02-24 810-798-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALMONT MI
2014-02-24 810-842-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IMLAY CITY MI
2014-02-20 810-222-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRIGHTON MI
2014-02-20 810-734-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ALGONAC MI
2013-01-25 810-339-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FLINT MI

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.