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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2014-04-01 337-290-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2014-04-01 337-290-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2014-04-01 337-445-1XXX 1000–1999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 BROUSSARD LA
2014-04-01 337-451-8XXX 8000–8999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 YOUNGSVL LA
2014-04-01 337-548-1XXX 1000–1999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 LAKEARTHUR LA
2014-04-01 337-550-8XXX 8000–8999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 EUNICE LA
2014-04-01 337-565-8XXX 8000–8999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 CARENCRO LA
2014-04-01 337-935-8XXX 8000–8999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 DUSON LA
2014-03-20 337-606-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J NEW IBERIA LA
2014-03-14 337-423-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LEESVILLE LA
2014-03-11 337-704-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2014-03-07 337-423-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2014-03-07 337-508-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA
2014-03-07 337-508-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA
2014-03-07 337-508-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA
2014-03-07 337-508-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA
2014-03-07 337-508-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LK CHARLES LA
2014-03-06 337-458-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2014-03-06 337-458-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2014-02-28 337-306-8XXX 8000–8999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 RAYNE LA
2014-02-28 337-918-1XXX 1000–1999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 ERATH LA
2014-02-20 337-400-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2014-02-20 337-400-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2014-02-20 337-400-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2014-02-18 337-221-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F DE RIDDER LA
2014-02-05 337-445-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BROUSSARD LA
2014-02-03 337-221-1XXX 1000–1999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H DE RIDDER LA
2014-02-03 337-221-2XXX 2000–2999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H DE RIDDER LA
2014-02-03 337-221-3XXX 3000–3999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H DE RIDDER LA
2014-02-03 337-358-2XXX 2000–2999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H IOWA LA
2014-02-03 337-404-1XXX 1000–1999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LEESVILLE LA
2014-02-03 337-404-2XXX 2000–2999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LEESVILLE LA
2014-02-03 337-404-4XXX 4000–4999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LEESVILLE LA
2014-02-03 337-445-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF LOUISIANA, LLC - LA 7488 BROUSSARD LA
2014-02-03 337-888-1XXX 1000–1999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H SULPHUR LA
2014-02-03 337-888-2XXX 2000–2999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H SULPHUR LA
2014-02-03 337-888-3XXX 3000–3999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H SULPHUR LA
2014-01-23 337-324-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F VINTON LA
2014-01-23 337-445-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F BROUSSARD LA
2014-01-17 337-476-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SULPHUR LA
2014-01-03 337-305-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2013-12-20 337-339-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F JEANERETTE LA
2013-12-03 337-551-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2013-11-26 337-551-8XXX 8000–8999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 NEW IBERIA LA
2013-11-25 337-806-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2013-11-25 337-806-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2013-11-25 337-806-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2013-11-19 337-602-1XXX 1000–1999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LK CHARLES LA
2013-11-19 337-602-2XXX 2000–2999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LK CHARLES LA
2013-11-19 337-602-3XXX 3000–3999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LK CHARLES 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.