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
2021-11-19 641-366-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CONRAD IA
2021-11-19 641-372-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKWELL IA
2021-11-19 641-397-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARBLEROCK IA
2021-11-19 641-492-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MONTOUR IA
2021-11-19 641-499-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GARWIN IA
2021-11-19 641-572-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEON IA
2021-11-19 641-582-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORESTCITY IA
2021-11-19 641-643-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H MALCOM IA
2021-11-19 641-705-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELMA IA
2021-11-19 641-823-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENE IA
2021-11-19 641-932-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALBIA IA
2021-11-09 641-387-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 TOLEDO IA
2021-10-20 641-215-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F OSKALOOSA IA
2021-10-20 641-215-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F OSKALOOSA IA
2021-10-20 641-219-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F CHARITON IA
2021-10-19 641-282-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SOUTHADAMS IA
2021-10-19 641-282-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SOUTHADAMS IA
2021-10-19 641-418-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CORNING IA
2021-10-06 641-222-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H BRITT IA
2021-10-06 641-384-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H BELMOND IA
2021-10-05 641-288-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H AMUND IA
2021-10-05 641-326-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H MONA IA
2021-10-05 641-382-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H BAILEY IA
2021-10-05 641-519-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H GARNER IA
2021-10-01 641-207-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F KEOTA IA
2021-10-01 641-221-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F GREENFIELD IA
2021-10-01 641-489-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F CHELSEA IA
2021-09-10 641-321-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 MOUNT AYR IA
2021-08-13 641-643-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F MALCOM IA
2021-08-13 641-643-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F MALCOM IA
2021-08-11 641-327-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F WELLSBURG IA
2021-08-11 641-387-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F TOLEDO IA
2021-08-11 641-541-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F SIGOURNEY IA
2021-08-11 641-557-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F NEWHAMPTON IA
2021-08-11 641-557-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F NEWHAMPTON IA
2021-08-11 641-710-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F STACYVILLE IA
2021-08-11 641-736-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F ST ANSGAR IA
2021-08-10 641-492-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F MONTOUR IA
2021-08-10 641-501-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MONTEZUMA IA
2021-08-10 641-734-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DIAGONAL IA
2021-08-10 641-737-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STACYVILLE IA
2021-08-10 641-834-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LYNNVILLE IA
2021-08-06 641-315-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F MARBLEROCK IA
2021-08-06 641-356-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F GLADBROOK IA
2021-08-06 641-479-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F LE GRAND IA
2021-08-06 641-499-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F GARWIN IA
2021-08-06 641-582-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F FORESTCITY IA
2021-08-06 641-582-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F FORESTCITY IA
2021-08-06 641-636-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F KEOTA IA
2021-08-06 641-659-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F GRINNELL 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.