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
2018-12-04 337-563-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2018-12-04 337-965-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2018-11-30 337-372-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 MERRYVILLE LA
2018-10-16 337-559-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F SWEET LAKE LA
2018-10-03 337-382-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2018-10-03 337-382-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2018-09-28 337-243-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CENTERVL LA
2018-09-27 337-469-0XXX 0000–0999Assigned LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 9002 CARENCRO LA
2018-07-30 337-520-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARENCRO LA
2018-07-30 337-592-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KROTZ SPG LA
2018-07-11 337-930-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 WELSH LA
2018-06-28 337-283-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ABBEVILLE LA
2018-06-11 337-452-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HAYES LA
2018-06-11 337-965-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2018-06-08 337-243-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CENTERVL LA
2018-06-08 337-306-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F RAYNE LA
2018-06-08 337-340-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F MERRYVILLE LA
2018-06-08 337-346-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F FRANKLIN LA
2018-06-05 337-345-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2018-05-17 337-345-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2018-05-02 337-283-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ABBEVILLE LA
2018-04-17 337-243-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CENTERVL LA
2018-04-17 337-427-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F RAYNE LA
2018-04-09 337-606-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E NEW IBERIA LA
2018-04-03 337-346-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F FRANKLIN LA
2018-04-03 337-346-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F FRANKLIN LA
2018-04-03 337-372-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F MERRYVILLE LA
2018-04-03 337-372-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F MERRYVILLE LA
2018-03-22 337-202-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E DE RIDDER LA
2018-03-20 337-990-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA
2018-03-14 337-399-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D LAFAYETTE LA
2018-03-06 337-564-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E LK CHARLES LA
2018-03-02 337-317-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE QUINCY LA
2018-02-19 337-242-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E STMARTINVL LA
2018-02-02 337-267-7XXX 7000–7999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
2018-01-29 337-450-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 YOUNGSVL LA
2018-01-29 337-450-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 YOUNGSVL LA
2018-01-17 337-388-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 JENNINGS LA
2018-01-09 337-221-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E DE RIDDER LA
2018-01-09 337-282-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E GUEYDAN LA
2017-12-22 337-656-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA
2017-12-21 337-450-3XXX 3000–3999Assigned LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 9002 YOUNGSVL LA
2017-12-15 337-361-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ERATH LA
2017-12-15 337-398-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J CROWLEY LA
2017-12-13 337-252-9XXX 9000–9999Assigned LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 9002 BROUSSARD LA
2017-12-13 337-561-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DUSON LA
2017-12-13 337-561-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DUSON LA
2017-12-12 337-242-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J STMARTINVL LA
2017-12-12 337-252-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BROUSSARD LA
2017-12-12 337-285-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J KAPLAN 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.