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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-11-04 872-297-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-11-04 872-297-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-11-03 872-283-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2021-11-03 872-295-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2021-11-03 872-295-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2021-11-03 872-295-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2021-11-03 872-295-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2021-10-28 872-295-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2021-10-28 872-295-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2021-10-28 872-295-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2021-10-28 872-295-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2021-10-28 872-295-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN03 IL
2021-10-28 872-296-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2021-10-28 872-296-6XXX 6000–6999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2021-10-28 872-296-7XXX 7000–7999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2021-10-28 872-296-8XXX 8000–8999Assigned ONVOY, LLC 224C CHICGOZN03 IL
2021-10-28 872-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H CHICGOZN01 IL
2021-10-28 872-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H CHICGOZN03 IL
2021-10-20 872-871-2XXX 2000–2999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-10-20 872-871-5XXX 5000–5999Assigned ONVOY, LLC 224C CHICGOZN01 IL
2021-10-15 872-871-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-15 872-871-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-15 872-871-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHICGOZN01 IL
2021-10-14 872-288-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-14 872-288-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-14 872-288-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-14 872-289-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-14 872-289-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-14 872-289-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-14 872-289-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2021-10-14 872-293-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN03 IL
2021-10-14 872-293-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN03 IL
2021-10-14 872-293-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN03 IL
2021-10-14 872-293-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN03 IL
2021-10-14 872-293-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CHICGOZN03 IL
2021-10-11 872-293-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2021-10-11 872-293-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2021-10-11 872-293-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2021-10-11 872-293-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2021-10-11 872-293-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2021-10-11 872-294-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-11 872-294-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-11 872-294-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-11 872-294-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-11 872-294-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-11 872-294-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-11 872-294-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-11 872-294-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-08 872-274-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2021-10-08 872-280-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 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.