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
2024-04-05 337-471-9XXX 9000–9999Assigned IP HORIZON LLC 515J FRANKLIN LA
2024-04-05 337-539-5XXX 5000–5999Assigned IP HORIZON LLC 515J GUEYDAN LA
2024-04-05 337-548-8XXX 8000–8999Assigned IP HORIZON LLC 515J LAKEARTHUR LA
2024-04-05 337-566-8XXX 8000–8999Assigned IP HORIZON LLC 515J KROTZ SPG LA
2024-04-05 337-575-0XXX 0000–0999Assigned IP HORIZON LLC 515J VINTON LA
2024-04-05 337-576-0XXX 0000–0999Assigned IP HORIZON LLC 515J EUNICE LA
2024-04-05 337-586-8XXX 8000–8999Assigned IP HORIZON LLC 515J WEEKS IS LA
2024-04-05 337-613-8XXX 8000–8999Assigned IP HORIZON LLC 515J MELVILLE LA
2024-04-05 337-617-9XXX 9000–9999Assigned IP HORIZON LLC 515J MERRYVILLE LA
2024-04-05 337-634-5XXX 5000–5999Assigned IP HORIZON LLC 515J LK CHARLES LA
2024-04-05 337-637-9XXX 9000–9999Assigned IP HORIZON LLC 515J RAYNE LA
2024-04-05 337-674-7XXX 7000–7999Assigned IP HORIZON LLC 515J SULPHUR LA
2024-04-05 337-690-1XXX 1000–1999Assigned IP HORIZON LLC 515J LEONVILLE LA
2024-04-05 337-691-1XXX 1000–1999Assigned IP HORIZON LLC 515J PORT BARRE LA
2024-04-05 337-730-5XXX 5000–5999Assigned IP HORIZON LLC 515J OPELOUSAS LA
2024-04-05 337-748-9XXX 9000–9999Assigned IP HORIZON LLC 515J WASHINGTON LA
2024-04-05 337-766-8XXX 8000–8999Assigned IP HORIZON LLC 515J LAWTELL LA
2024-04-05 337-803-2XXX 2000–2999Assigned IP HORIZON LLC 515J DUSON LA
2024-04-05 337-846-1XXX 1000–1999Assigned IP HORIZON LLC 515J JEANERETTE LA
2024-04-05 337-858-3XXX 3000–3999Assigned IP HORIZON LLC 515J YOUNGSVL LA
2024-04-05 337-904-9XXX 9000–9999Assigned IP HORIZON LLC 515J LOREAUVL LA
2024-04-03 337-651-3XXX 3000–3999Assigned IP HORIZON LLC 515J CROWLEY LA
2024-04-02 337-651-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E CROWLEY LA
2024-03-29 337-757-1XXX 1000–1999Assigned IP HORIZON LLC 515J CARENCRO LA
2024-03-28 337-590-0XXX 0000–0999Assigned IP HORIZON LLC 515J ABBEVILLE LA
2024-03-28 337-742-1XXX 1000–1999Assigned IP HORIZON LLC 515J BALDWIN LA
2024-03-28 337-773-8XXX 8000–8999Assigned IP HORIZON LLC 515J BROUSSARD LA
2024-03-28 337-946-8XXX 8000–8999Assigned IP HORIZON LLC 515J CENTERVL LA
2024-03-22 337-924-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J BALDWIN LA
2024-03-22 337-937-3XXX 3000–3999Assigned TERRA NOVA TELECOM INC. 145J ERATH LA
2024-03-14 337-341-1XXX 1000–1999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H STMARTINVL LA
2024-03-13 337-276-8XXX 8000–8999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H JEANERETTE LA
2024-03-13 337-352-7XXX 7000–7999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H NEW IBERIA LA
2024-03-13 337-361-3XXX 3000–3999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H ERATH LA
2024-03-13 337-450-2XXX 2000–2999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H YOUNGSVL LA
2024-03-13 337-472-5XXX 5000–5999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H MAMOU LA
2024-03-13 337-773-1XXX 1000–1999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H BROUSSARD LA
2024-03-13 337-904-5XXX 5000–5999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H LOREAUVL LA
2024-03-06 337-397-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E LEESVILLE LA
2024-03-06 337-487-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E LEESVILLE LA
2024-03-05 337-386-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E DE QUINCY LA
2024-03-05 337-518-8XXX 8000–8999Assigned CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 260H VL PLATTE LA
2024-03-05 337-574-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E DE RIDDER LA
2024-03-05 337-574-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E DE RIDDER LA
2024-02-26 337-634-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 LK CHARLES LA
2024-02-13 337-568-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2024-02-08 337-651-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E CROWLEY LA
2024-02-08 337-915-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARENCRO LA
2024-02-06 337-471-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E FRANKLIN LA
2024-02-06 337-832-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E STMARTINVL 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.