NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

21 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, last 30 days — NPA 337
ONVOY, LLC - LA 17
NEW CINGULAR WIRELESS PCS, LLC - GA 2
CSC WIRELESS, LLC 2
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
2005-02-22 337-201-2XXX 2000–2999Assigned METROPCS, INC. 5562 NEW IBERIA LA
2005-02-16 337-377-6XXX 6000–6999Assigned METROPCS, INC. 5562 LK CHARLES LA
2005-02-15 337-852-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-02-15 337-852-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-02-15 337-852-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-02-15 337-852-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-02-15 337-852-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-02-15 337-852-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-02-15 337-940-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BALDWIN LA
2005-02-15 337-940-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BALDWIN LA
2005-02-11 337-335-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2005-02-11 337-335-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2005-02-11 337-550-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2005-02-11 337-550-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2005-02-03 337-656-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LK CHARLES LA
2005-02-03 337-656-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LK CHARLES LA
2005-01-28 337-315-3XXX 3000–3999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2005-01-28 337-315-4XXX 4000–4999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2005-01-28 337-377-8XXX 8000–8999Assigned METROPCS, INC. 5562 LK CHARLES LA
2005-01-28 337-377-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2005-01-25 337-384-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2005-01-25 337-384-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2005-01-25 337-384-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2005-01-25 337-384-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2005-01-25 337-384-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2005-01-25 337-384-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2005-01-25 337-412-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-25 337-412-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-25 337-412-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-25 337-412-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-25 337-412-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-25 337-412-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-12 337-578-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BALDWIN LA
2005-01-12 337-578-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BALDWIN LA
2005-01-06 337-409-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 VINTON LA
2005-01-05 337-415-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 SWEET LAKE LA
2005-01-03 337-356-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-356-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-356-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-356-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-356-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-356-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-356-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-356-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-356-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2005-01-03 337-580-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2005-01-03 337-580-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2004-12-29 337-326-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
2004-12-09 337-377-3XXX 3000–3999Assigned METROPCS, INC. 5562 LK CHARLES LA
2004-12-09 337-377-7XXX 7000–7999Assigned METROPCS, INC. 5562 LK CHARLES LA

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.