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
2021-04-24 872-910-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-04-24 872-910-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-04-22 872-280-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN04 IL
2021-04-17 872-345-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2021-04-17 872-345-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2021-04-08 872-664-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN01 IL
2021-03-22 872-910-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-03-01 872-678-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J CHICGOZN11 IL
2021-02-15 872-274-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2021-02-15 872-274-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2021-02-15 872-274-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2021-02-15 872-877-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2021-02-15 872-877-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2021-02-15 872-877-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2021-02-15 872-877-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2021-02-11 872-270-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-270-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-270-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-270-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-270-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-270-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-345-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-345-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-345-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-11 872-345-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-02-08 872-877-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2021-02-08 872-877-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2021-02-08 872-877-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2021-02-08 872-877-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2021-02-08 872-877-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2021-02-05 872-270-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2021-02-05 872-270-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2021-02-05 872-270-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2021-02-05 872-732-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2021-02-05 872-732-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2021-02-05 872-732-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2021-02-05 872-732-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2021-02-05 872-732-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2021-02-05 872-895-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2021-02-05 872-895-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2021-01-27 872-895-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-01-27 872-895-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-01-27 872-895-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-01-27 872-895-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-01-27 872-895-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN01 IL
2021-01-20 872-732-5XXX 5000–5999Assigned FRACTEL, LLC 965H CHICGOZN08 IL
2021-01-19 872-279-1XXX 1000–1999Assigned UCOMTEL INC. 534J CHICGOZN01 IL
2021-01-19 872-763-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2021-01-19 872-763-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2021-01-19 872-769-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN06 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.