NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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, last 30 days — NPA 616
NEW CINGULAR WIRELESS PCS, LLC - IL 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 1
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
2019-04-17 616-253-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C MOLINE 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
2019-03-22 616-737-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SARANAC MI
2019-03-13 616-268-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRANDHAVEN MI
2019-03-13 616-410-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2019-03-04 616-273-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G MARNE MI
2019-03-01 616-385-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G KENT CITY MI
2019-02-26 616-900-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J GRAND RPDS MI
2019-02-21 616-287-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2019-02-21 616-287-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2019-02-21 616-287-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2019-02-21 616-287-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2019-02-21 616-287-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2019-02-21 616-287-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2019-02-21 616-287-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2019-02-11 616-737-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SARANAC MI
2019-02-11 616-737-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SARANAC MI
2019-02-11 616-737-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SARANAC MI
2019-02-11 616-737-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SARANAC MI
2019-02-11 616-737-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SARANAC MI
2019-02-11 616-737-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SARANAC MI
2019-02-06 616-207-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LOWELL MI
2019-01-25 616-800-0XXX 0000–0999Assigned FRACTEL, LLC 965H JAMESTOWN MI
2019-01-25 616-816-8XXX 8000–8999Assigned FRACTEL, LLC 965H GRAND RPDS MI
2019-01-16 616-326-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD MI
2019-01-07 616-287-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2019-01-07 616-287-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2018-11-29 616-483-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DUTTON MI
2018-11-28 616-210-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ZEELAND MI
2018-11-28 616-268-5XXX 5000–5999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G GRANDHAVEN MI
2018-11-28 616-420-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ALTO MI
2018-11-28 616-636-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G SAND LAKE MI
2018-11-09 616-410-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2018-10-22 616-208-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G BELDING MI
2018-10-22 616-535-8XXX 8000–8999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G SPARTA MI
2018-10-09 616-410-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E GRAND RPDS MI
2018-10-05 616-287-1XXX 1000–1999Assigned TELNET WORLDWIDE, INC. 817J GRAND RPDS MI
2018-10-01 616-266-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G TRUFANT MI
2018-09-25 616-420-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ALTO MI
2018-09-24 616-483-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DUTTON MI
2018-09-21 616-448-7XXX 7000–7999Assigned METROPCS, INC. 5562 DRENTHE 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.