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
2020-03-30 337-317-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E DE QUINCY LA
2020-03-30 337-334-1XXX 1000–1999Assigned ONVOY, LLC - LA 749E RAYNE LA
2020-03-30 337-427-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E RAYNE LA
2020-03-30 337-486-2XXX 2000–2999Assigned ONVOY, LLC - LA 749E STMARTINVL LA
2020-03-30 337-486-3XXX 3000–3999Assigned ONVOY, LLC - LA 749E STMARTINVL LA
2020-03-25 337-381-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OPELOUSAS LA
2020-03-24 337-487-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2020-03-24 337-487-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2020-03-24 337-487-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2020-03-05 337-321-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2020-03-05 337-465-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2020-03-05 337-492-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEW IBERIA LA
2020-03-05 337-785-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2020-03-05 337-785-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2020-03-05 337-785-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2020-03-05 337-991-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2020-03-05 337-991-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2020-03-05 337-991-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2020-03-05 337-991-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2020-02-18 337-321-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - LA 3232 NEW IBERIA LA
2020-02-14 337-677-0XXX 0000–0999Assigned METROPCS, INC. 5562 LK CHARLES LA
2020-02-14 337-677-1XXX 1000–1999Assigned METROPCS, INC. 5562 LK CHARLES LA
2020-02-12 337-283-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 ABBEVILLE LA
2020-02-12 337-283-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 ABBEVILLE LA
2020-02-05 337-930-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 WELSH LA
2020-01-31 337-592-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KROTZ SPG LA
2020-01-31 337-605-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 CAMERON LA
2020-01-10 337-222-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE QUINCY LA
2020-01-10 337-509-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
2020-01-10 337-678-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K OPELOUSAS LA
2019-12-20 337-252-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BROUSSARD LA
2019-12-20 337-544-4XXX 4000–4999Assigned FRACTEL, LLC 965H SUGARTOWN LA
2019-12-20 337-877-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VINTON LA
2019-12-19 337-300-0XXX 0000–0999Assigned FRACTEL, LLC 965H ELTON LA
2019-12-19 337-300-3XXX 3000–3999Assigned FRACTEL, LLC 965H ELTON LA
2019-12-19 337-399-9XXX 9000–9999Assigned FRACTEL, LLC 965H LAFAYETTE LA
2019-12-19 337-455-5XXX 5000–5999Assigned FRACTEL, LLC 965H BREAUX BDG LA
2019-12-19 337-999-4XXX 4000–4999Assigned FRACTEL, LLC 965H BROUSSARD LA
2019-12-19 337-999-5XXX 5000–5999Assigned FRACTEL, LLC 965H BROUSSARD LA
2019-12-19 337-999-7XXX 7000–7999Assigned FRACTEL, LLC 965H BROUSSARD LA
2019-12-17 337-486-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2019-12-16 337-688-8XXX 8000–8999Assigned FRACTEL, LLC 965H LK CHARLES LA
2019-12-12 337-450-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 YOUNGSVL LA
2019-12-12 337-469-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARENCRO LA
2019-12-05 337-420-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BALDWIN LA
2019-11-21 337-483-1XXX 1000–1999Assigned TELNYX LLC 073H LAFAYETTE LA
2019-11-06 337-270-1XXX 1000–1999Assigned EXIANT COMMUNICATIONS LLC 114J LAFAYETTE LA
2019-10-21 337-222-4XXX 4000–4999Assigned ONVOY, LLC - LA 749E DE QUINCY LA
2019-10-21 337-222-5XXX 5000–5999Assigned ONVOY, LLC - LA 749E DE QUINCY LA
2019-10-16 337-294-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE 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.