NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2022-01-27 337-767-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J CROWLEY LA
2022-01-27 337-846-9XXX 9000–9999Assigned TON80 COMMUNICATIONS, LLC 516J JEANERETTE LA
2022-01-26 337-487-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 LEESVILLE LA
2022-01-14 337-346-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 FRANKLIN LA
2022-01-14 337-387-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C WELSH LA
2022-01-14 337-387-2XXX 2000–2999Assigned VOICESTREAM GSM I, LLC 150C WELSH LA
2022-01-14 337-387-3XXX 3000–3999Assigned VOICESTREAM GSM I, LLC 150C WELSH LA
2022-01-14 337-387-4XXX 4000–4999Assigned VOICESTREAM GSM I, LLC 150C WELSH LA
2022-01-14 337-486-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 STMARTINVL LA
2022-01-14 337-495-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE RIDDER LA
2022-01-10 337-677-4XXX 4000–4999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2022-01-10 337-688-4XXX 4000–4999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2022-01-10 337-688-5XXX 5000–5999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2022-01-10 337-688-6XXX 6000–6999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2022-01-10 337-688-7XXX 7000–7999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2022-01-10 337-901-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2022-01-10 337-901-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2022-01-10 337-901-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2022-01-10 337-901-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2022-01-10 337-990-7XXX 7000–7999Assigned VOICESTREAM GSM I, LLC 150C LK CHARLES LA
2021-12-23 337-300-2XXX 2000–2999Assigned VOICESTREAM GSM I, LLC 150C ELTON LA
2021-12-23 337-300-4XXX 4000–4999Assigned VOICESTREAM GSM I, LLC 150C ELTON LA
2021-12-10 337-279-8XXX 8000–8999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-12-10 337-294-7XXX 7000–7999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-12-10 337-295-6XXX 6000–6999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-12-10 337-703-8XXX 8000–8999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-12-07 337-895-8XXX 8000–8999Assigned TWILIO INTERNATIONAL, INC. 506J LAFAYETTE LA
2021-11-22 337-623-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MELVILLE LA
2021-11-18 337-398-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CROWLEY LA
2021-11-18 337-784-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CROWLEY LA
2021-11-18 337-847-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ARNAUDVL LA
2021-11-08 337-486-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F STMARTINVL LA
2021-11-08 337-518-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VL PLATTE LA
2021-11-08 337-561-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F DUSON LA
2021-11-08 337-585-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PORT BARRE LA
2021-11-08 337-879-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LEONVILLE LA
2021-11-08 337-904-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LOREAUVL LA
2021-11-08 337-999-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F BROUSSARD LA
2021-11-03 337-594-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2021-11-03 337-594-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2021-10-27 337-595-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ABBEVILLE LA
2021-10-27 337-595-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ABBEVILLE LA
2021-10-19 337-567-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2021-10-19 337-567-1XXX 1000–1999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2021-10-19 337-567-2XXX 2000–2999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2021-10-19 337-567-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2021-10-18 337-294-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H LAFAYETTE LA
2021-10-18 337-294-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H LAFAYETTE LA
2021-10-18 337-294-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H LAFAYETTE LA
2021-10-18 337-294-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H LAFAYETTE LA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.