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
2019-09-16 337-243-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E CENTERVL LA
2019-09-16 337-282-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E GUEYDAN LA
2019-09-16 337-282-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E GUEYDAN LA
2019-09-16 337-283-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2019-09-16 337-283-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2019-09-16 337-358-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E IOWA LA
2019-09-16 337-358-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E IOWA LA
2019-09-16 337-375-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E DE RIDDER LA
2019-09-16 337-375-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E DE RIDDER LA
2019-09-16 337-435-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E LEONVILLE LA
2019-09-16 337-448-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E MELVILLE LA
2019-09-16 337-448-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E MELVILLE LA
2019-09-16 337-454-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E CECELIA LA
2019-09-16 337-454-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E CECELIA LA
2019-09-16 337-636-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E JEANERETTE LA
2019-09-16 337-636-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E JEANERETTE LA
2019-09-09 337-677-7XXX 7000–7999Assigned FRACTEL, LLC 965H LK CHARLES LA
2019-08-13 337-877-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F VINTON LA
2019-08-09 337-438-7XXX 7000–7999Assigned METROPCS, INC. 5562 LK CHARLES LA
2019-08-07 337-455-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E BREAUX BDG LA
2019-08-07 337-472-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E MAMOU LA
2019-08-07 337-473-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E RAGLEY LA
2019-08-07 337-481-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E STARKS LA
2019-08-06 337-358-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E IOWA LA
2019-08-06 337-454-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E CECELIA LA
2019-08-01 337-222-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E DE QUINCY LA
2019-08-01 337-227-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E CHURCH PT LA
2019-08-01 337-403-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E HAYES LA
2019-08-01 337-434-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E HENDERSON LA
2019-08-01 337-510-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E SUNSET LA
2019-08-01 337-612-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E IOTA LA
2019-08-01 337-614-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E CANKTON LA
2019-08-01 337-847-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E ARNAUDVL LA
2019-07-19 337-340-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERRYVILLE LA
2019-07-12 337-563-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2019-07-12 337-563-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2019-07-08 337-877-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F VINTON LA
2019-07-03 337-345-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2019-06-25 337-438-5XXX 5000–5999Assigned METROPCS, INC. 5562 LK CHARLES LA
2019-06-17 337-265-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 LAFAYETTE LA
2019-06-17 337-510-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 SUNSET LA
2019-06-17 337-549-0XXX 0000–0999Assigned CSC WIRELESS, LLC 425J LK CHARLES LA
2019-06-17 337-549-3XXX 3000–3999Assigned CSC WIRELESS, LLC 425J LK CHARLES LA
2019-06-14 337-420-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BALDWIN LA
2019-06-07 337-222-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE QUINCY LA
2019-06-06 337-229-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LOREAUVL LA
2019-06-06 337-447-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 OPELOUSAS LA
2019-05-30 337-561-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DUSON LA
2019-05-21 337-201-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E NEW IBERIA LA
2019-05-21 337-267-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E LAFAYETTE 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.