NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 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 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
2016-03-17 337-223-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E GUEYDAN LA
2016-03-17 337-223-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E GUEYDAN LA
2016-03-17 337-307-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E KROTZ SPG LA
2016-03-17 337-307-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E KROTZ SPG LA
2016-03-17 337-340-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E MERRYVILLE LA
2016-03-17 337-340-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E MERRYVILLE LA
2016-03-17 337-357-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E WEEKS IS LA
2016-03-17 337-357-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E WEEKS IS LA
2016-03-16 337-435-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E LEONVILLE LA
2016-03-16 337-435-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E LEONVILLE LA
2016-03-16 337-448-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E MELVILLE LA
2016-03-16 337-448-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E MELVILLE LA
2016-03-16 337-628-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E WASHINGTON LA
2016-03-16 337-628-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E WASHINGTON LA
2016-03-16 337-777-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E PORT BARRE LA
2016-03-16 337-777-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E PORT BARRE LA
2016-03-15 337-252-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E BROUSSARD LA
2016-03-15 337-252-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E BROUSSARD LA
2016-03-15 337-409-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E VINTON LA
2016-03-15 337-409-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E VINTON LA
2016-03-15 337-428-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E JEANERETTE LA
2016-03-15 337-428-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E JEANERETTE LA
2016-03-15 337-907-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E FRANKLIN LA
2016-03-15 337-907-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E FRANKLIN LA
2016-03-15 337-918-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E ERATH LA
2016-03-15 337-918-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E ERATH LA
2016-03-09 337-520-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E CARENCRO LA
2016-03-09 337-520-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E CARENCRO LA
2016-03-07 337-548-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E LAKEARTHUR LA
2016-03-07 337-548-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E LAKEARTHUR LA
2016-03-07 337-841-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E LAWTELL LA
2016-03-07 337-841-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E LAWTELL LA
2016-03-02 337-561-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E DUSON LA
2016-03-02 337-561-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E DUSON LA
2016-02-29 337-573-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E YOUNGSVL LA
2016-02-29 337-573-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E YOUNGSVL LA
2016-02-29 337-603-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E EUNICE LA
2016-02-29 337-603-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E EUNICE LA
2016-02-29 337-944-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E LOREAUVL LA
2016-02-29 337-944-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E LOREAUVL LA
2016-02-26 337-242-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E STMARTINVL LA
2016-02-26 337-242-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E STMARTINVL LA
2016-02-26 337-418-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2016-02-26 337-418-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2016-02-26 337-418-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2016-02-26 337-418-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2016-02-26 337-427-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E RAYNE LA
2016-02-26 337-427-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E RAYNE LA
2016-02-24 337-388-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E JENNINGS LA
2016-02-24 337-388-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E JENNINGS LA

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.