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
2021-04-27 337-688-2XXX 2000–2999Assigned METROPCS, INC. 5562 LK CHARLES LA
2021-04-27 337-688-3XXX 3000–3999Assigned METROPCS, INC. 5562 LK CHARLES LA
2021-04-27 337-688-9XXX 9000–9999Assigned METROPCS, INC. 5562 LK CHARLES LA
2021-04-21 337-270-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2021-04-21 337-270-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2021-04-21 337-279-0XXX 0000–0999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2021-04-21 337-279-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2021-04-21 337-279-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2021-04-21 337-279-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E LAFAYETTE LA
2021-04-21 337-701-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EUNICE LA
2021-04-21 337-915-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARENCRO LA
2021-04-17 337-327-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2021-04-17 337-486-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2021-04-17 337-487-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2021-04-17 337-655-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VL PLATTE LA
2021-04-17 337-655-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VL PLATTE LA
2021-04-17 337-785-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2021-04-17 337-785-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2021-04-17 337-858-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 YOUNGSVL LA
2021-04-16 337-285-0XXX 0000–0999Assigned METROPCS, INC. 5562 KAPLAN LA
2021-04-16 337-717-5XXX 5000–5999Assigned METROPCS, INC. 5562 CROWLEY LA
2021-04-14 337-901-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H LAFAYETTE LA
2021-04-06 337-455-0XXX 0000–0999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2021-04-06 337-455-1XXX 1000–1999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2021-04-06 337-455-2XXX 2000–2999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2021-04-06 337-455-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C BREAUX BDG LA
2021-04-02 337-554-1XXX 1000–1999Assigned IP HORIZON LLC 515J LAFAYETTE LA
2021-04-01 337-545-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 CENTERVL LA
2021-03-30 337-382-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 ABBEVILLE LA
2021-03-26 337-450-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E YOUNGSVL LA
2021-03-26 337-450-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E YOUNGSVL LA
2021-03-26 337-450-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E YOUNGSVL LA
2021-03-26 337-450-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E YOUNGSVL LA
2021-03-26 337-471-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E FRANKLIN LA
2021-03-26 337-471-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E FRANKLIN LA
2021-03-26 337-579-6XXX 6000–6999Assigned ONVOY, LLC - LA 749E JEANERETTE LA
2021-03-26 337-579-9XXX 9000–9999Assigned ONVOY, LLC - LA 749E JEANERETTE LA
2021-03-26 337-623-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E MELVILLE LA
2021-03-26 337-702-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E LAKEARTHUR LA
2021-03-26 337-777-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E PORT BARRE LA
2021-03-26 337-777-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E PORT BARRE LA
2021-03-26 337-841-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E LAWTELL LA
2021-03-26 337-841-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E LAWTELL LA
2021-03-26 337-858-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C YOUNGSVL LA
2021-03-26 337-879-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E LEONVILLE LA
2021-03-26 337-879-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E LEONVILLE LA
2021-03-26 337-904-7XXX 7000–7999Assigned ONVOY, LLC - LA 749E LOREAUVL LA
2021-03-26 337-904-8XXX 8000–8999Assigned ONVOY, LLC - LA 749E LOREAUVL LA
2021-03-26 337-915-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E CARENCRO LA
2021-03-26 337-915-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E CARENCRO 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.