NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 872
NEW CINGULAR WIRELESS PCS, LLC - IL 8
8X8, INC. 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
2020-04-17 872-282-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-08 872-261-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-04-08 872-261-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-04-08 872-261-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-04-01 872-278-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-01 872-278-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-03-26 872-257-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2020-03-26 872-257-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2020-03-26 872-257-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2020-03-23 872-261-6XXX 6000–6999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN10 IL
2020-03-20 872-262-9XXX 9000–9999Assigned AT&T - LOCAL 7421 CHICGOZN09 IL
2020-03-17 872-261-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-03-17 872-261-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-03-17 872-261-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-03-16 872-245-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN04 IL
2020-03-16 872-333-3XXX 3000–3999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN03 IL
2020-03-16 872-365-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN02 IL
2020-03-16 872-763-2XXX 2000–2999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN06 IL
2020-03-05 872-222-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2020-03-05 872-243-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2020-03-03 872-258-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-03-03 872-258-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-03-03 872-259-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-03-03 872-259-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-03-03 872-259-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-03-03 872-259-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-03-03 872-259-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-17 872-255-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN04 IL
2020-02-14 872-259-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-259-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-259-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-260-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-260-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-260-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-260-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-260-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-260-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-14 872-260-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-02-12 872-227-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2020-02-12 872-227-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2020-02-12 872-243-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2020-02-12 872-243-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL

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.