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 603
METROPCS, INC. 76
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
2025-11-06 603-317-8XXX 8000–8999Assigned METROPCS, INC. 5562 MILAN NH
2025-05-01 603-304-4XXX 4000–4999Assigned METROPCS, INC. 5562 ENFIELD NH
2025-04-02 603-869-8XXX 8000–8999Assigned METROPCS, INC. 5562 BETHLEHEM NH
2025-03-13 603-282-2XXX 2000–2999Assigned METROPCS, INC. 5562 CANAAN NH
2025-03-13 603-408-3XXX 3000–3999Assigned METROPCS, INC. 5562 BERLIN NH
2025-03-13 603-784-4XXX 4000–4999Assigned METROPCS, INC. 5562 PETERBROGH NH
2025-03-13 603-788-7XXX 7000–7999Assigned METROPCS, INC. 5562 LANCASTER NH
2024-07-31 603-265-4XXX 4000–4999Assigned METROPCS, INC. 5562 NEW BOSTON NH
2024-01-12 603-416-6XXX 6000–6999Assigned METROPCS, INC. 5562 RAYMOND NH
2022-05-17 603-814-8XXX 8000–8999Assigned METROPCS, INC. 5562 SEABROOK NH
2021-09-23 603-690-0XXX 0000–0999Assigned METROPCS, INC. 5562 CLAREMONT NH
2021-05-13 603-349-3XXX 3000–3999Assigned METROPCS, INC. 5562 W LEBANON NH
2021-05-12 603-519-2XXX 2000–2999Assigned METROPCS, INC. 5562 EXETER NH
2018-09-19 603-333-7XXX 7000–7999Assigned METROPCS, INC. 5562 CONCORD NH
2018-05-17 603-333-4XXX 4000–4999Assigned METROPCS, INC. 5562 CONCORD NH
2017-04-17 603-258-9XXX 9000–9999Assigned METROPCS, INC. 5562 HOLLIS NH
2017-01-30 603-824-4XXX 4000–4999Assigned METROPCS, INC. 5562 SALEM NH
2016-12-28 603-461-0XXX 0000–0999Assigned METROPCS, INC. 5562 MERRIMACK NH
2016-12-28 603-507-5XXX 5000–5999Assigned METROPCS, INC. 5562 ROCHESTER NH
2015-09-24 603-931-6XXX 6000–6999Assigned METROPCS, INC. 5562 CONCORD NH
2015-09-24 603-931-7XXX 7000–7999Assigned METROPCS, INC. 5562 CONCORD NH
2015-02-18 603-937-8XXX 8000–8999Assigned METROPCS, INC. 5562 MEREDITH NH
2014-11-24 603-461-4XXX 4000–4999Assigned METROPCS, INC. 5562 MERRIMACK NH
2014-11-21 603-509-6XXX 6000–6999Assigned METROPCS, INC. 5562 ROCHESTER NH
2014-10-13 603-261-4XXX 4000–4999Assigned METROPCS, INC. 5562 MERRIMACK NH
2014-10-13 603-820-9XXX 9000–9999Assigned METROPCS, INC. 5562 MERRIMACK NH
2013-09-25 603-948-8XXX 8000–8999Assigned METROPCS, INC. 5562 ROCHESTER NH
2011-12-27 603-820-7XXX 7000–7999Assigned METROPCS, INC. 5562 MERRIMACK NH
2011-09-29 603-508-5XXX 5000–5999Assigned METROPCS, INC. 5562 PELHAM NH
2011-03-14 603-583-6XXX 6000–6999Assigned METROPCS, INC. 5562 EXETER NH
2010-09-24 603-820-4XXX 4000–4999Assigned METROPCS, INC. 5562 MERRIMACK NH
2010-09-24 603-820-5XXX 5000–5999Assigned METROPCS, INC. 5562 MERRIMACK NH
2010-09-24 603-820-6XXX 6000–6999Assigned METROPCS, INC. 5562 MERRIMACK NH
2010-06-14 603-294-6XXX 6000–6999Assigned METROPCS, INC. 5562 PORTSMOUTH NH
2010-06-14 603-294-7XXX 7000–7999Assigned METROPCS, INC. 5562 PORTSMOUTH NH
2010-06-14 603-294-8XXX 8000–8999Assigned METROPCS, INC. 5562 PORTSMOUTH NH
2010-02-19 603-820-1XXX 1000–1999Assigned METROPCS, INC. 5562 MERRIMACK NH
2010-02-19 603-820-2XXX 2000–2999Assigned METROPCS, INC. 5562 MERRIMACK NH
2010-02-19 603-820-3XXX 3000–3999Assigned METROPCS, INC. 5562 MERRIMACK NH
2008-07-23 603-261-0XXX 0000–0999Assigned METROPCS, INC. 5562 MERRIMACK NH
2008-07-23 603-261-1XXX 1000–1999Assigned METROPCS, INC. 5562 MERRIMACK NH
2008-07-23 603-262-0XXX 0000–0999Assigned METROPCS, INC. 5562 MERRIMACK NH
2008-07-23 603-341-0XXX 0000–0999Assigned METROPCS, INC. 5562 MERRIMACK NH
2008-07-23 603-341-1XXX 1000–1999Assigned METROPCS, INC. 5562 MERRIMACK NH
2008-07-23 603-461-1XXX 1000–1999Assigned METROPCS, INC. 5562 MERRIMACK NH
2008-03-10 603-820-0XXX 0000–0999Assigned METROPCS, INC. 5562 MERRIMACK NH
2007-11-02 603-793-4XXX 4000–4999Assigned METROPCS, INC. 5562 EXETER NH
2006-08-16 603-852-3XXX 3000–3999Assigned METROPCS, INC. 5562 KEENE NH
2006-07-17 603-793-8XXX 8000–8999Assigned METROPCS, INC. 5562 EXETER NH
2006-04-19 603-998-8XXX 8000–8999Assigned METROPCS, INC. 5562 LACONIA NH

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.