NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 616
CENTURYLINK COMMUNICATIONS, LLC 58
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
2019-08-20 616-352-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-08-20 616-352-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2019-03-29 616-382-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-09-13 616-655-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2018-02-22 616-428-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND RPDS MI
2015-08-18 616-239-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ZEELAND MI
2015-08-18 616-383-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPARTA MI
2015-08-18 616-984-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TRUFANT MI
2015-08-17 616-253-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOLINE MI
2015-08-17 616-557-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SAND LAKE MI
2015-08-17 616-577-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SARANAC MI
2015-08-17 616-947-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARNE MI
2015-08-17 616-951-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCKFORD MI
2015-08-13 616-449-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FREEPORT MI
2015-08-13 616-512-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DUTTON MI
2015-08-13 616-681-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DORR MI
2015-08-13 616-899-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CONKLIN MI
2015-08-12 616-215-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANDHAVEN MI
2015-08-12 616-229-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUDSONVL MI
2015-08-12 616-275-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CALEDONIA MI
2015-08-12 616-303-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENVILLE MI
2015-08-12 616-319-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOWELL MI
2015-08-12 616-345-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BYRON CTR MI
2015-08-12 616-368-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOLLAND MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.