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
2015-10-08 337-571-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2015-10-08 337-571-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2015-10-08 337-571-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2015-10-08 337-571-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2015-10-08 337-571-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2015-09-22 337-735-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2015-09-15 337-600-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2015-09-15 337-600-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2015-08-31 337-340-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F MERRYVILLE LA
2015-08-31 337-346-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F FRANKLIN LA
2015-08-31 337-428-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F JEANERETTE LA
2015-08-31 337-435-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LEONVILLE LA
2015-08-28 337-350-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CENTERVL LA
2015-08-28 337-408-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2015-08-28 337-935-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F DUSON LA
2015-08-27 337-761-7XXX 7000–7999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2015-08-27 337-769-5XXX 5000–5999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2015-08-20 337-359-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NEW IBERIA LA
2015-08-13 337-573-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 YOUNGSVL LA
2015-07-23 337-909-7XXX 7000–7999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2015-07-23 337-909-8XXX 8000–8999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2015-07-22 337-603-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C EUNICE LA
2015-07-21 337-291-0XXX 0000–0999Assigned LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 9002 LAFAYETTE LA
2015-07-15 337-324-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VINTON LA
2015-07-14 337-388-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C JENNINGS LA
2015-07-08 337-678-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2015-07-08 337-678-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2015-07-02 337-900-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E SULPHUR LA
2015-07-02 337-900-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E SULPHUR LA
2015-07-02 337-900-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E SULPHUR LA
2015-07-02 337-900-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E SULPHUR LA
2015-07-02 337-900-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E SULPHUR LA
2015-07-02 337-900-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E SULPHUR LA
2015-07-02 337-900-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E SULPHUR LA
2015-06-26 337-800-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2015-06-26 337-800-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E ABBEVILLE LA
2015-06-18 337-965-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2015-06-18 337-965-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2015-06-11 337-800-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2015-06-11 337-800-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2015-06-11 337-800-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2015-06-03 337-943-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F OPELOUSAS LA
2015-06-02 337-336-4XXX 4000–4999Assigned METROPCS, INC. 5562 VL PLATTE LA
2015-06-02 337-628-3XXX 3000–3999Assigned METROPCS, INC. 5562 WASHINGTON LA
2015-06-02 337-766-1XXX 1000–1999Assigned METROPCS, INC. 5562 LAWTELL LA
2015-06-02 337-766-2XXX 2000–2999Assigned METROPCS, INC. 5562 LAWTELL LA
2015-05-29 337-418-2XXX 2000–2999Assigned METROPCS, INC. 5562 OPELOUSAS LA
2015-05-29 337-418-3XXX 3000–3999Assigned METROPCS, INC. 5562 OPELOUSAS LA
2015-05-29 337-435-3XXX 3000–3999Assigned METROPCS, INC. 5562 LEONVILLE LA
2015-05-29 337-435-4XXX 4000–4999Assigned METROPCS, INC. 5562 LEONVILLE 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.