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
2006-10-10 616-328-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2006-10-10 616-328-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2006-10-10 616-359-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DORR MI
2006-10-09 616-212-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2006-10-09 616-848-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2006-10-06 616-328-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2006-10-06 616-514-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2006-10-06 616-514-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2006-10-06 616-514-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2006-10-06 616-824-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GREENVILLE MI
2006-09-26 616-263-8XXX 8000–8999Assigned 123.NET, LLC 2550 CEDAR SPG MI
2006-09-21 616-328-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2006-09-21 616-328-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2006-09-18 616-328-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2006-09-15 616-263-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CEDAR SPG MI
2006-09-13 616-834-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2006-09-13 616-834-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2006-08-31 616-209-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HUDSONVL MI
2006-08-31 616-277-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J BYRON CTR MI
2006-08-31 616-682-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ADA MI
2006-08-31 616-691-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J GRATTAN MI
2006-08-31 616-803-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J DUTTON MI
2006-08-31 616-868-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ALTO MI
2006-08-31 616-883-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ROCKFORD MI
2006-08-31 616-987-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LOWELL MI
2006-08-28 616-808-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2006-08-18 616-719-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2006-08-18 616-719-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2006-08-18 616-719-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2006-08-18 616-719-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J GRAND RPDS MI
2006-08-10 616-384-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 COOPERSVL MI
2006-08-10 616-384-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 COOPERSVL MI
2006-08-10 616-834-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 HOLLAND MI
2006-08-01 616-808-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2006-07-24 616-788-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GREENVILLE MI
2006-07-21 616-777-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 HUDSONVL MI
2006-07-21 616-788-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GREENVILLE MI
2006-07-21 616-841-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 IONIA MI
2006-06-12 616-613-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ZEELAND MI
2006-06-12 616-797-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C HUDSONVL MI
2006-06-02 616-928-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 HOLLAND MI
2006-05-19 616-808-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2006-05-19 616-808-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2006-05-18 616-808-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2006-05-16 616-788-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENVILLE MI
2006-05-10 616-477-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J GRAND RPDS MI
2006-05-04 616-205-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SPARTA MI
2006-05-01 616-796-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C HOLLAND MI
2006-04-28 616-212-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2006-04-28 616-212-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND 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.