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
2019-11-01 641-667-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F OLLIE IA
2019-11-01 641-693-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F LIBERTYVL IA
2019-11-01 641-724-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MORAVIA IA
2019-11-01 641-726-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F MELROSE IA
2019-11-01 641-728-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F PERU IA
2019-11-01 641-734-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F DIAGONAL IA
2019-11-01 641-744-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F LINDEN IA
2019-11-01 641-764-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MARTENSDL IA
2019-11-01 641-766-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F LUCAS IA
2019-11-01 641-767-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F REDDING IA
2019-11-01 641-768-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MACKSBURG IA
2019-11-01 641-772-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F TINGLEY IA
2019-11-01 641-783-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F KELLERTON IA
2019-11-01 641-785-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F BENTON IA
2019-11-01 641-787-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F NEWTON IA
2019-11-01 641-819-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F FAIRFIELD IA
2019-11-01 641-820-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F KNOXVILLE IA
2019-11-01 641-862-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F WILLIAMSON IA
2019-11-01 641-874-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F PROMISE CY IA
2019-11-01 641-898-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F SEYMOUR IA
2019-11-01 641-933-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F FREMONT IA
2019-11-01 641-934-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F BLADENSBG IA
2019-11-01 641-935-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F CHILLICOTH IA
2019-11-01 641-936-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F DOUDS IA
2019-11-01 641-938-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F BLAKESBURG IA
2019-11-01 641-942-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F MILO IA
2019-11-01 641-943-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F ATTICA IA
2019-11-01 641-944-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F BUSSEY IA
2019-11-01 641-949-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F TRACY IA
2019-10-31 641-347-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F AFTON IA
2019-10-31 641-742-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F ADAIR IA
2019-10-31 641-931-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F ALBIA IA
2019-10-21 641-327-9XXX 9000–9999Assigned WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 WELLSBURG IA
2019-10-07 641-206-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSCEOLA IA
2019-10-07 641-903-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MASON CITY IA
2019-10-03 641-229-8XXX 8000–8999Assigned AUREON COMMUNICATIONS, LLC 444G NEWHAMPTON IA
2019-10-03 641-548-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MASON CITY IA
2019-09-30 641-401-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F SWALEDALE IA
2019-09-30 641-406-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F MESERVEY IA
2019-09-30 641-418-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F CORNING IA
2019-09-30 641-580-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F LATIMER IA
2019-09-30 641-609-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F ALEXANDER IA
2019-09-30 641-614-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F SHARPSBURG IA
2019-09-30 641-646-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F ROWAN IA
2019-09-30 641-671-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F LENOX IA
2019-09-30 641-681-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F GOODELL IA
2019-09-30 641-892-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F SHEFFIELD IA
2019-09-18 641-322-1XXX 1000–1999Assigned AUREON COMMUNICATIONS, LLC 444G CORNING IA
2019-09-16 641-390-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 NORTHWOOD IA
2019-09-13 641-441-1XXX 1000–1999Assigned GREENWAY COMMUNICATIONS L.L.C. - IA 860F KLEMME 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.