NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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 641
ONVOY, LLC - IA 2
T-MOBILE USA, INC. 1
NEW CINGULAR WIRELESS PCS, LLC - IL 1
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
2019-11-05 641-276-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F AGENCY IA
2019-11-05 641-400-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F HUMESTON IA
2019-11-05 641-448-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MELCHER IA
2019-11-05 641-946-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F LOVILIA IA
2019-11-04 641-216-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CENTERVL IA
2019-11-04 641-217-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 CHARITON IA
2019-11-04 641-931-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ALBIA IA
2019-11-01 641-206-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F OSCEOLA IA
2019-11-01 641-212-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F GREENFIELD IA
2019-11-01 641-216-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F CENTERVL IA
2019-11-01 641-217-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F CHARITON IA
2019-11-01 641-225-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F EDDYVILLE IA
2019-11-01 641-232-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F LEIGHTON IA
2019-11-01 641-247-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F FONTANELLE IA
2019-11-01 641-259-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MONROE IA
2019-11-01 641-321-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F MOUNT AYR IA
2019-11-01 641-332-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F GUTHRIECTR IA
2019-11-01 641-335-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F PRESCOTT IA
2019-11-01 641-336-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CLEARFIELD IA
2019-11-01 641-337-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F ORIENT IA
2019-11-01 641-339-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F SHANNON CY IA
2019-11-01 641-346-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F ARISPE IA
2019-11-01 641-348-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F KENT IA
2019-11-01 641-362-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F CRESTON IA
2019-11-01 641-363-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F MINGO IA
2019-11-01 641-369-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F BRIDGEWTR IA
2019-11-01 641-416-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F PELLA IA
2019-11-01 641-427-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F BAGLEY IA
2019-11-01 641-429-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F JAMAICA IA
2019-11-01 641-433-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F WHAT CHEER IA
2019-11-01 641-449-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F NEWVIRGINI IA
2019-11-01 641-452-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F UNIONVILLE IA
2019-11-01 641-466-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F LIBERTYCTR IA
2019-11-01 641-534-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F LACONA IA
2019-11-01 641-535-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F RUSSELL IA
2019-11-01 641-541-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F SIGOURNEY IA
2019-11-01 641-624-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F DELTA IA
2019-11-01 641-625-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F PEORIA IA
2019-11-01 641-627-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F OTLEY IA
2019-11-01 641-635-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F HARPER IA
2019-11-01 641-636-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F KEOTA IA
2019-11-01 641-637-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F NEW SHARON IA
2019-11-01 641-647-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MYSTIC IA
2019-11-01 641-649-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F PLANO IA
2019-11-01 641-652-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F ELDON IA
2019-11-01 641-653-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F HEDRICK IA
2019-11-01 641-655-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F FARSON IA
2019-11-01 641-656-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F MILTON IA
2019-11-01 641-658-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CINCINNATI IA
2019-11-01 641-661-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F MARTINSBG IA

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.