NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2023-10-13 872-352-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2023-10-13 872-352-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2023-10-13 872-352-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2023-10-13 872-352-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2023-10-13 872-352-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2023-10-13 872-352-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2023-10-13 872-352-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN09 IL
2023-10-05 872-341-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2023-10-04 872-372-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2023-10-04 872-372-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN05 IL
2023-09-27 872-340-1XXX 1000–1999Assigned WIDE VOICE, LLC - IL 395H CHICGOZN04 IL
2023-09-27 872-340-2XXX 2000–2999Assigned HD CARRIER LLC 321J CHICGOZN04 IL
2023-09-26 872-200-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2023-09-26 872-200-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2023-09-26 872-200-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2023-09-26 872-200-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2023-09-26 872-331-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-26 872-331-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-26 872-331-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-26 872-331-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-21 872-339-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2023-09-21 872-339-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2023-09-21 872-339-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2023-09-20 872-240-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2023-09-20 872-338-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2023-09-20 872-338-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2023-09-20 872-338-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2023-09-20 872-338-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2023-09-20 872-338-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2023-09-20 872-344-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2023-09-20 872-344-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2023-09-20 872-344-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2023-09-20 872-344-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2023-09-19 872-280-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2023-09-08 872-277-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2023-09-01 872-330-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2023-09-01 872-338-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2023-08-25 872-338-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2023-08-25 872-338-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2023-08-25 872-338-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2023-08-25 872-338-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2023-08-16 872-318-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2023-08-15 872-344-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2023-08-15 872-344-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2023-08-08 872-300-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2023-08-05 872-309-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2023-08-05 872-309-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2023-08-05 872-309-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2023-08-05 872-309-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2023-08-05 872-309-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.