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
2021-03-11 337-495-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE RIDDER LA
2021-03-09 337-434-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E HENDERSON LA
2021-03-09 337-434-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E HENDERSON LA
2021-03-09 337-444-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E PARKS LA
2021-03-09 337-452-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E HAYES LA
2021-03-09 337-510-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E SUNSET LA
2021-03-09 337-510-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E SUNSET LA
2021-03-09 337-612-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E IOTA LA
2021-03-09 337-614-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E CANKTON LA
2021-03-09 337-847-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E ARNAUDVL LA
2021-03-09 337-847-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E ARNAUDVL LA
2021-03-09 337-917-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E ERATH LA
2021-03-09 337-917-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E ERATH LA
2021-03-03 337-943-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2021-03-03 337-943-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2021-03-03 337-983-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-03-03 337-983-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-03-03 337-983-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-03-01 337-390-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C KINDER LA
2021-03-01 337-630-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C CAMERON LA
2021-02-24 337-458-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E CROWLEY LA
2021-02-24 337-788-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E CROWLEY LA
2021-02-19 337-701-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E EUNICE LA
2021-02-12 337-703-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
2021-02-12 337-703-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
2021-02-11 337-553-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 GUEYDAN LA
2021-02-08 337-340-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E MERRYVILLE LA
2021-02-08 337-481-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E STARKS LA
2021-02-08 337-579-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E JEANERETTE LA
2021-02-08 337-879-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E LEONVILLE LA
2021-02-04 337-252-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F BROUSSARD LA
2021-02-01 337-547-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E NEW IBERIA LA
2021-02-01 337-547-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E NEW IBERIA LA
2021-02-01 337-547-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E NEW IBERIA LA
2021-02-01 337-547-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E NEW IBERIA LA
2021-01-27 337-382-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2021-01-27 337-391-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 IOWA LA
2021-01-26 337-283-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2021-01-26 337-283-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2021-01-26 337-284-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E OPELOUSAS LA
2021-01-26 337-284-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E OPELOUSAS LA
2021-01-26 337-329-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E JENNINGS LA
2021-01-26 337-333-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E RAYNE LA
2021-01-26 337-333-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E RAYNE LA
2021-01-26 337-358-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E IOWA LA
2021-01-26 337-358-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E IOWA LA
2021-01-26 337-415-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E SWEET LAKE LA
2021-01-26 337-415-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E SWEET LAKE LA
2021-01-26 337-448-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E MELVILLE LA
2021-01-26 337-448-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E MELVILLE 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.