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
2021-10-18 337-294-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H LAFAYETTE LA
2021-10-18 337-387-6XXX 6000–6999Assigned METROPCS, INC. 5562 WELSH LA
2021-10-18 337-821-3XXX 3000–3999Assigned METROPCS, INC. 5562 JENNINGS LA
2021-10-12 337-677-2XXX 2000–2999Assigned METROPCS, INC. 5562 LK CHARLES LA
2021-10-12 337-677-3XXX 3000–3999Assigned METROPCS, INC. 5562 LK CHARLES LA
2021-10-12 337-677-5XXX 5000–5999Assigned METROPCS, INC. 5562 LK CHARLES LA
2021-10-12 337-677-6XXX 6000–6999Assigned METROPCS, INC. 5562 LK CHARLES LA
2021-10-06 337-901-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-10-06 337-901-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-10-06 337-901-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-10-06 337-901-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-10-06 337-901-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-09-29 337-595-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 ABBEVILLE LA
2021-09-24 337-512-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2021-09-24 337-512-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2021-09-24 337-512-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2021-09-13 337-595-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ABBEVILLE LA
2021-09-13 337-595-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ABBEVILLE LA
2021-09-08 337-473-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F RAGLEY LA
2021-08-31 337-594-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2021-08-31 337-594-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2021-08-12 337-557-1XXX 1000–1999Assigned AIRUS, INC. - LA 477H LAFAYETTE LA
2021-08-10 337-467-3XXX 3000–3999Assigned VOICESTREAM GSM I, LLC 150C OPELOUSAS LA
2021-08-10 337-467-4XXX 4000–4999Assigned VOICESTREAM GSM I, LLC 150C OPELOUSAS LA
2021-07-01 337-469-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CARENCRO LA
2021-07-01 337-915-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CARENCRO LA
2021-06-15 337-595-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ABBEVILLE LA
2021-06-14 337-385-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F ABBEVILLE LA
2021-06-10 337-504-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-2XXX 2000–2999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-3XXX 3000–3999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-4XXX 4000–4999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-5XXX 5000–5999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-6XXX 6000–6999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-7XXX 7000–7999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-8XXX 8000–8999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-554-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2021-06-10 337-918-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ERATH LA
2021-06-04 337-556-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CHURCH PT LA
2021-06-03 337-525-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F DE QUINCY LA
2021-05-18 337-391-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 IOWA LA
2021-05-10 337-290-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2021-05-10 337-295-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-05-10 337-295-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-05-10 337-295-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-05-10 337-295-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-05-10 337-295-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2021-05-10 337-407-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OPELOUSAS LA
2021-04-27 337-688-1XXX 1000–1999Assigned METROPCS, INC. 5562 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.