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
2013-11-19 337-602-4XXX 4000–4999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LK CHARLES LA
2013-11-19 337-602-5XXX 5000–5999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LK CHARLES LA
2013-11-19 337-602-6XXX 6000–6999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LK CHARLES LA
2013-11-14 337-400-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2013-11-14 337-400-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2013-11-14 337-400-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2013-11-14 337-706-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
2013-11-06 337-564-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LK CHARLES LA
2013-10-14 337-292-2XXX 2000–2999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2013-10-14 337-419-4XXX 4000–4999Assigned METROPCS, INC. 5562 LK CHARLES LA
2013-10-14 337-419-6XXX 6000–6999Assigned METROPCS, INC. 5562 LK CHARLES LA
2013-10-14 337-419-7XXX 7000–7999Assigned METROPCS, INC. 5562 LK CHARLES LA
2013-10-14 337-419-8XXX 8000–8999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2013-10-14 337-419-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2013-10-09 337-551-5XXX 5000–5999Assigned HUNT TELECOMMUNICATIONS, LLC - LA 181D NEW IBERIA LA
2013-10-08 337-458-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 CROWLEY LA
2013-10-08 337-930-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 WELSH LA
2013-10-02 337-465-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEW IBERIA LA
2013-10-02 337-465-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEW IBERIA LA
2013-09-25 337-443-3XXX 3000–3999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2013-09-25 337-443-5XXX 5000–5999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2013-09-25 337-443-8XXX 8000–8999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2013-09-25 337-660-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LK CHARLES LA
2013-09-09 337-413-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J FRANKLIN LA
2013-09-04 337-965-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2013-09-03 337-565-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CARENCRO LA
2013-08-22 337-806-9XXX 9000–9999Assigned LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 9002 LAFAYETTE LA
2013-08-21 337-443-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
2013-08-07 337-419-1XXX 1000–1999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LK CHARLES LA
2013-07-31 337-442-5XXX 5000–5999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2013-07-31 337-442-7XXX 7000–7999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2013-07-31 337-442-8XXX 8000–8999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2013-07-31 337-442-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2013-07-01 337-784-4XXX 4000–4999Assigned VOICESTREAM GSM I, LLC 150C CROWLEY LA
2013-07-01 337-784-5XXX 5000–5999Assigned VOICESTREAM GSM I, LLC 150C CROWLEY LA
2013-07-01 337-784-6XXX 6000–6999Assigned VOICESTREAM GSM I, LLC 150C CROWLEY LA
2013-06-19 337-443-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LAFAYETTE LA
2013-06-19 337-443-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LAFAYETTE LA
2013-06-17 337-376-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NEW IBERIA LA
2013-06-17 337-423-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2013-06-04 337-221-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J DE RIDDER LA
2013-06-04 337-400-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2013-06-04 337-400-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2013-06-04 337-400-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2013-05-20 337-447-6XXX 6000–6999Assigned VOICESTREAM GSM I, LLC 150C OPELOUSAS LA
2013-05-20 337-447-7XXX 7000–7999Assigned VOICESTREAM GSM I, LLC 150C OPELOUSAS LA
2013-05-15 337-245-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F SWEET LAKE LA
2013-05-15 337-419-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LK CHARLES LA
2013-05-14 337-465-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEW IBERIA LA
2013-03-28 337-546-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE 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.