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
2020-10-30 641-452-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F UNIONVILLE IA
2020-10-30 641-535-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F RUSSELL IA
2020-10-30 641-614-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F SHARPSBURG IA
2020-10-30 641-622-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F SIGOURNEY IA
2020-10-30 641-646-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F ROWAN IA
2020-10-30 641-646-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F ROWAN IA
2020-10-30 641-649-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F PLANO IA
2020-10-29 641-204-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F PELLA IA
2020-10-29 641-215-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F OSKALOOSA IA
2020-10-29 641-625-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F PEORIA IA
2020-10-29 641-627-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F OTLEY IA
2020-10-29 641-955-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MONROE IA
2020-10-29 641-977-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F NEW SHARON IA
2020-10-28 641-820-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 KNOXVILLE IA
2020-10-25 641-219-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CHARITON IA
2020-10-25 641-337-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F ORIENT IA
2020-10-25 641-363-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F MINGO IA
2020-10-25 641-381-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F NORTHWOOD IA
2020-10-25 641-406-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F MESERVEY IA
2020-10-25 641-406-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F MESERVEY IA
2020-10-25 641-448-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F MELCHER IA
2020-10-25 641-448-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F MELCHER IA
2020-10-25 641-449-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F NEWVIRGINI IA
2020-10-25 641-503-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F MOUNT AYR IA
2020-10-25 641-647-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F MYSTIC IA
2020-10-25 641-656-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F MILTON IA
2020-10-25 641-661-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F MARTINSBG IA
2020-10-25 641-667-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F OLLIE IA
2020-10-22 641-207-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F KEOTA IA
2020-10-22 641-219-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F CHARITON IA
2020-10-22 641-219-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CHARITON IA
2020-10-22 641-221-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F GREENFIELD IA
2020-10-22 641-247-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F FONTANELLE IA
2020-10-22 641-276-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F AGENCY IA
2020-10-22 641-276-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F AGENCY IA
2020-10-22 641-307-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F GUTHRIECTR IA
2020-10-22 641-336-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F CLEARFIELD IA
2020-10-22 641-346-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F ARISPE IA
2020-10-22 641-347-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F AFTON IA
2020-10-22 641-348-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F KENT IA
2020-10-22 641-362-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CRESTON IA
2020-10-22 641-362-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F CRESTON IA
2020-10-22 641-369-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F BRIDGEWTR IA
2020-10-22 641-400-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F HUMESTON IA
2020-10-22 641-427-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F BAGLEY IA
2020-10-22 641-429-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F JAMAICA IA
2020-10-22 641-436-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F CENTERVL IA
2020-10-22 641-436-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F CENTERVL IA
2020-10-22 641-461-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F CHARLES CY IA
2020-10-22 641-461-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F CHARLES CY 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.