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
2013-03-26 337-785-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C CROWLEY LA
2013-03-07 337-443-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2013-02-27 337-441-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 STMARTINVL LA
2013-02-26 337-443-9XXX 9000–9999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 LAFAYETTE LA
2013-02-22 337-414-2XXX 2000–2999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2013-02-22 337-414-3XXX 3000–3999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2013-02-21 337-226-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C DE RIDDER LA
2013-01-23 337-245-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SWEET LAKE LA
2013-01-23 337-372-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MERRYVILLE LA
2012-12-21 337-226-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 DE RIDDER LA
2012-12-06 337-789-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2012-12-06 337-888-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SULPHUR LA
2012-12-06 337-889-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2012-12-06 337-889-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2012-12-06 337-889-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2012-12-06 337-889-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2012-11-29 337-441-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2012-11-29 337-441-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2012-11-16 337-465-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F NEW IBERIA LA
2012-11-13 337-201-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEW IBERIA LA
2012-11-02 337-443-1XXX 1000–1999Assigned NUSO, LLC 551G LAFAYETTE LA
2012-10-26 337-935-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 DUSON LA
2012-10-12 337-453-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2012-10-12 337-453-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2012-10-12 337-889-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2012-09-26 337-200-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 BASILE LA
2012-09-26 337-201-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEW IBERIA LA
2012-09-26 337-458-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 CROWLEY LA
2012-09-19 337-551-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J NEW IBERIA LA
2012-09-11 337-357-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 WEEKS IS LA
2012-09-11 337-385-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ABBEVILLE LA
2012-09-06 337-347-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LAFAYETTE LA
2012-09-06 337-504-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
2012-09-06 337-706-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LAFAYETTE LA
2012-08-24 337-999-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F BROUSSARD LA
2012-08-22 337-400-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2012-08-16 337-385-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2012-08-16 337-522-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2012-08-03 337-419-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LK CHARLES LA
2012-07-25 337-346-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F FRANKLIN LA
2012-07-25 337-918-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ERATH LA
2012-07-06 337-201-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEW IBERIA LA
2012-07-06 337-223-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 GUEYDAN LA
2012-07-06 337-936-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LK CHARLES LA
2012-06-27 337-456-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2012-06-27 337-522-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 ABBEVILLE LA
2012-06-22 337-347-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
2012-06-12 337-888-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F SULPHUR LA
2012-06-01 337-246-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K JENNINGS LA
2012-05-30 337-446-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 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.