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
2021-08-06 641-659-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F GRINNELL IA
2021-08-06 641-823-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F GREENE IA
2021-08-04 641-282-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F SOUTHADAMS IA
2021-08-04 641-382-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F BAILEY IA
2021-08-04 641-385-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F COLLINS IA
2021-08-04 641-393-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F ELMA IA
2021-07-22 641-240-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 UNIONVILLE IA
2021-07-06 641-406-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F MESERVEY IA
2021-06-18 641-222-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H BRITT IA
2021-06-18 641-322-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CORNING IA
2021-06-18 641-384-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H BELMOND IA
2021-06-18 641-519-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H GARNER IA
2021-06-18 641-609-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ALEXANDER IA
2021-06-18 641-717-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H COULTER IA
2021-06-09 641-282-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SOUTHADAMS IA
2021-06-09 641-288-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H AMUND IA
2021-06-09 641-382-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H BAILEY IA
2021-06-09 641-900-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H MONA IA
2021-06-02 641-417-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 NEWTON IA
2021-05-25 641-241-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FONTANELLE IA
2021-05-25 641-245-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRESCOTT IA
2021-05-25 641-248-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLLIE IA
2021-05-25 641-282-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHADAMS IA
2021-05-25 641-288-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AMUND IA
2021-05-25 641-382-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAILEY IA
2021-05-19 641-317-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANAWHA IA
2021-05-19 641-400-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMESTON IA
2021-05-19 641-743-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENFIELD IA
2021-05-19 641-849-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELDORA IA
2021-05-19 641-887-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SULLY IA
2021-05-19 641-900-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MONA IA
2021-05-18 641-432-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 FORESTCITY IA
2021-05-07 641-429-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JAMAICA IA
2021-04-27 641-796-1XXX 1000–1999Assigned REASNOR TELEPHONE COMPANY, LLC 739D REASNOR IA
2021-04-27 641-796-2XXX 2000–2999Assigned REASNOR TELEPHONE COMPANY, LLC 739D REASNOR IA
2021-04-27 641-796-3XXX 3000–3999Assigned REASNOR TELEPHONE COMPANY, LLC 739D REASNOR IA
2021-04-27 641-796-4XXX 4000–4999Assigned REASNOR TELEPHONE COMPANY, LLC 739D REASNOR IA
2021-04-27 641-796-5XXX 5000–5999Assigned REASNOR TELEPHONE COMPANY, LLC 739D REASNOR IA
2021-04-26 641-276-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H AGENCY IA
2021-04-26 641-277-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OTTUMWA IA
2021-04-14 641-274-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F LOVILIA IA
2021-04-14 641-768-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F MACKSBURG IA
2021-04-14 641-768-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F MACKSBURG IA
2021-04-14 641-785-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F BENTON IA
2021-04-14 641-932-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F ALBIA IA
2021-04-14 641-934-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F BLADENSBG IA
2021-04-14 641-934-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F BLADENSBG IA
2021-04-14 641-938-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F BLAKESBURG IA
2021-04-14 641-938-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F BLAKESBURG IA
2021-04-13 641-643-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MALCOM 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.