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
2010-05-25 337-404-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LEESVILLE LA
2010-05-25 337-451-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F YOUNGSVL LA
2010-05-25 337-466-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F EUNICE LA
2010-05-25 337-565-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CARENCRO LA
2010-05-24 337-476-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SULPHUR LA
2010-05-21 337-492-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J NEW IBERIA LA
2010-05-13 337-330-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BROUSSARD LA
2010-05-13 337-552-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BROUSSARD LA
2010-05-05 337-366-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
2010-05-03 337-205-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LAFAYETTE LA
2010-03-30 337-426-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LK CHARLES LA
2010-03-24 337-476-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SULPHUR LA
2010-03-11 337-366-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
2010-03-11 337-936-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LK CHARLES LA
2010-03-01 337-313-3XXX 3000–3999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H SULPHUR LA
2010-03-01 337-313-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SULPHUR LA
2010-03-01 337-565-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CARENCRO LA
2010-03-01 337-680-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2010-02-26 337-564-6XXX 6000–6999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LK CHARLES LA
2010-02-17 337-284-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF LOUISIANA, LLC - LA 7488 OPELOUSAS LA
2010-02-10 337-564-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2010-02-10 337-564-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2010-02-05 337-366-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
2010-01-26 337-205-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LAFAYETTE LA
2010-01-19 337-707-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2010-01-19 337-707-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2010-01-14 337-292-1XXX 1000–1999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2010-01-14 337-388-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 JENNINGS LA
2010-01-14 337-413-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 FRANKLIN LA
2010-01-14 337-422-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 ABBEVILLE LA
2010-01-14 337-548-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAKEARTHUR LA
2010-01-08 337-366-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
2009-12-29 337-471-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C FRANKLIN LA
2009-12-15 337-680-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2009-12-14 337-707-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LK CHARLES LA
2009-12-09 337-313-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SULPHUR LA
2009-12-09 337-552-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BROUSSARD LA
2009-11-02 337-585-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J PORT BARRE LA
2009-10-29 337-446-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2009-10-26 337-404-7XXX 7000–7999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LEESVILLE LA
2009-10-15 337-388-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JENNINGS LA
2009-10-08 337-287-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SULPHUR LA
2009-10-08 337-517-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2009-09-22 337-504-8XXX 8000–8999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2009-09-15 337-292-4XXX 4000–4999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2009-09-15 337-292-5XXX 5000–5999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2009-09-03 337-393-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RAYNE LA
2009-09-02 337-442-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2009-09-02 337-442-2XXX 2000–2999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2009-08-31 337-784-1XXX 1000–1999Assigned VOICESTREAM GSM I, LLC 150C CROWLEY 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.