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
2014-12-22 872-267-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2014-12-22 872-267-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2014-12-22 872-267-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2014-12-22 872-267-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2014-12-22 872-267-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2014-12-22 872-356-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2014-12-22 872-356-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2014-12-22 872-356-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2014-12-22 872-356-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN10 IL
2014-12-09 872-228-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN09 IL
2014-12-03 872-356-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN10 IL
2014-11-19 872-813-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2014-11-19 872-813-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2014-11-19 872-813-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN05 IL
2014-10-29 872-702-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN10 IL
2014-10-24 872-901-0XXX 0000–0999Assigned METROPCS, INC. 5562 CHICGOZN07 IL
2014-10-24 872-901-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHICGOZN07 IL
2014-10-23 872-818-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN07 IL
2014-10-22 872-731-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN07 IL
2014-10-21 872-817-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN04 IL
2014-10-17 872-281-4XXX 4000–4999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2014-10-17 872-281-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN06 IL
2014-10-17 872-469-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2014-10-17 872-469-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2014-10-16 872-401-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHICGOZN07 IL
2014-10-16 872-814-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2014-10-16 872-814-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2014-10-14 872-731-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2014-10-14 872-731-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2014-10-08 872-267-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN08 IL
2014-10-08 872-401-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2014-10-08 872-401-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2014-10-08 872-401-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN07 IL
2014-10-08 872-814-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2014-10-08 872-814-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN04 IL
2014-10-07 872-281-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CHICGOZN06 IL
2014-10-03 872-814-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2014-10-01 872-276-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN06 IL
2014-10-01 872-813-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CHICGOZN05 IL
2014-10-01 872-817-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2014-09-24 872-242-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2014-09-24 872-242-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN04 IL
2014-09-24 872-444-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHICGOZN06 IL
2014-09-24 872-713-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2014-09-24 872-713-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN04 IL
2014-09-19 872-813-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-09-19 872-813-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN05 IL
2014-09-16 872-241-1XXX 1000–1999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2014-09-16 872-241-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN02 IL
2014-09-16 872-243-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 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.