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
2020-08-26 872-265-0XXX 0000–0999Assigned STRATUS NETWORKS 495J CHICGOZN10 IL
2020-08-26 872-873-9XXX 9000–9999Assigned STRATUS NETWORKS 495J CHICGOZN11 IL
2020-08-24 872-248-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2020-08-24 872-248-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2020-08-24 872-248-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2020-08-24 872-255-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2020-08-24 872-255-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2020-08-24 872-255-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2020-08-24 872-255-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN04 IL
2020-08-11 872-268-9XXX 9000–9999Assigned HD CARRIER LLC 321J CHICGOZN01 IL
2020-08-03 872-365-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN02 IL
2020-07-23 872-873-0XXX 0000–0999Assigned TELNYX LLC 073H CHICGOZN11 IL
2020-07-15 872-362-8XXX 8000–8999Assigned FRACTEL, LLC 965H CHICGOZN05 IL
2020-07-15 872-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H CHICGOZN10 IL
2020-07-15 872-766-3XXX 3000–3999Assigned FRACTEL, LLC 965H CHICGOZN01 IL
2020-07-15 872-766-6XXX 6000–6999Assigned FRACTEL, LLC 965H CHICGOZN01 IL
2020-07-14 872-257-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2020-07-14 872-257-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2020-07-09 872-255-5XXX 5000–5999Assigned FRACTEL, LLC 965H CHICGOZN04 IL
2020-06-17 872-255-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2020-06-17 872-255-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2020-06-17 872-255-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN04 IL
2020-06-11 872-265-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-06-11 872-265-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-06-11 872-265-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-06-11 872-265-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN10 IL
2020-05-29 872-873-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2020-05-29 872-873-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2020-05-29 872-873-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2020-05-29 872-873-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2020-05-29 872-873-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN11 IL
2020-05-20 872-263-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN01 IL
2020-05-19 872-264-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-05-19 872-264-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-05-19 872-264-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-05-19 872-264-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-05-19 872-264-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-05-19 872-264-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN01 IL
2020-05-14 872-263-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHICGOZN01 IL
2020-04-29 872-304-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2020-04-29 872-484-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2020-04-17 872-282-0XXX 0000–0999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-17 872-282-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-17 872-282-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-17 872-282-3XXX 3000–3999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-17 872-282-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-17 872-282-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-17 872-282-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-17 872-282-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2020-04-17 872-282-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN01 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.