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
2016-06-28 337-227-4XXX 4000–4999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 CHURCH PT LA
2016-06-28 337-242-0XXX 0000–0999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 STMARTINVL LA
2016-06-28 337-243-2XXX 2000–2999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 CENTERVL LA
2016-06-28 337-307-2XXX 2000–2999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 KROTZ SPG LA
2016-06-28 337-357-2XXX 2000–2999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 WEEKS IS LA
2016-06-28 337-358-3XXX 3000–3999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 IOWA LA
2016-06-28 337-420-2XXX 2000–2999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 BALDWIN LA
2016-06-28 337-428-6XXX 6000–6999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 JEANERETTE LA
2016-06-28 337-434-0XXX 0000–0999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 HENDERSON LA
2016-06-28 337-444-0XXX 0000–0999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 PARKS LA
2016-06-28 337-448-1XXX 1000–1999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 MELVILLE LA
2016-06-28 337-449-0XXX 0000–0999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 ARNAUDVL LA
2016-06-28 337-454-0XXX 0000–0999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 CECELIA LA
2016-06-28 337-471-0XXX 0000–0999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 FRANKLIN LA
2016-06-28 337-490-0XXX 0000–0999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 DELCAMBRE LA
2016-06-28 337-509-2XXX 2000–2999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 LEESVILLE LA
2016-06-28 337-510-1XXX 1000–1999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 SUNSET LA
2016-06-28 337-628-9XXX 9000–9999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 WASHINGTON LA
2016-06-28 337-766-3XXX 3000–3999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 LAWTELL LA
2016-06-28 337-777-2XXX 2000–2999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 PORT BARRE LA
2016-06-28 337-879-4XXX 4000–4999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 LEONVILLE LA
2016-06-28 337-944-3XXX 3000–3999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 LOREAUVL LA
2016-06-27 337-292-8XXX 8000–8999Assigned METROPCS, INC. 5562 LK CHARLES LA
2016-06-24 337-703-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2016-06-22 337-520-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C CARENCRO LA
2016-06-20 337-427-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 RAYNE LA
2016-06-07 337-242-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2016-06-07 337-242-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2016-06-07 337-242-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2016-06-07 337-520-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARENCRO LA
2016-06-07 337-520-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARENCRO LA
2016-06-03 337-324-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VINTON LA
2016-05-19 337-603-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2016-05-19 337-603-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2016-05-18 337-240-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA
2016-05-18 337-735-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2016-05-04 337-660-0XXX 0000–0999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 LK CHARLES LA
2016-05-04 337-909-1XXX 1000–1999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 BREAUX BDG LA
2016-04-29 337-606-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2016-04-29 337-606-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2016-04-25 337-413-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C FRANKLIN LA
2016-04-25 337-918-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C ERATH LA
2016-03-25 337-573-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 YOUNGSVL LA
2016-03-25 337-573-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 YOUNGSVL LA
2016-03-21 337-243-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E CENTERVL LA
2016-03-21 337-243-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E CENTERVL LA
2016-03-21 337-420-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E BALDWIN LA
2016-03-21 337-420-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E BALDWIN LA
2016-03-18 337-415-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E SWEET LAKE LA
2016-03-18 337-415-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E SWEET LAKE 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.