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
2013-03-19 872-209-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2013-03-19 872-209-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2013-03-19 872-209-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2013-03-12 872-208-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN02 IL
2013-02-26 872-244-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN07 IL
2013-02-21 872-215-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN07 IL
2013-02-20 872-207-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN08 IL
2013-02-19 872-702-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2013-02-19 872-702-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2013-02-19 872-702-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2013-02-12 872-240-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN03 IL
2013-01-30 872-205-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2013-01-30 872-205-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2013-01-30 872-205-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2013-01-30 872-395-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2013-01-25 872-244-2XXX 2000–2999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN07 IL
2013-01-25 872-244-4XXX 4000–4999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN07 IL
2013-01-25 872-244-5XXX 5000–5999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN07 IL
2012-12-21 872-999-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2012-12-21 872-999-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2012-12-21 872-999-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2012-12-21 872-999-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2012-12-21 872-999-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2012-12-13 872-206-9XXX 9000–9999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2012-12-05 872-209-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2012-12-05 872-209-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2012-12-05 872-209-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2012-11-21 872-206-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN04 IL
2012-11-21 872-208-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN02 IL
2012-11-21 872-253-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2012-11-21 872-253-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2012-11-21 872-253-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2012-11-21 872-253-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2012-11-21 872-253-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN08 IL
2012-11-21 872-465-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2012-11-21 872-465-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2012-11-21 872-465-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2012-11-21 872-465-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2012-11-21 872-465-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2012-11-21 872-777-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN07 IL
2012-11-21 872-829-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2012-11-21 872-829-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2012-10-25 872-203-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2012-10-25 872-203-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2012-10-25 872-208-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2012-10-25 872-208-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN02 IL
2012-10-03 872-209-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2012-10-03 872-209-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2012-09-28 872-206-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN04 IL
2012-09-25 872-207-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 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.