NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 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 224
NEW CINGULAR WIRELESS PCS, LLC - IL 11
ONVOY, LLC 5
VERSATEL LLC 1
INTRADO COMMUNICATIONS, LLC 1
EXIANT COMMUNICATIONS LLC 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
2021-01-11 224-566-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-01-11 224-566-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-01-11 224-566-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-01-11 224-566-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-01-11 224-566-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-01-11 224-566-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-01-11 224-566-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2021-01-11 224-822-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-01-11 224-822-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-01-11 224-822-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-01-11 224-822-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-01-11 224-822-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-01-05 224-822-2XXX 2000–2999Assigned FRACTEL, LLC 965H ARLIGTNHTS IL
2020-12-14 224-368-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-14 224-368-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-11 224-426-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E FOX LAKE IL
2020-12-11 224-786-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HIGHLANDPK IL
2020-12-11 224-786-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HIGHLANDPK IL
2020-12-10 224-328-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E WINNETKA IL
2020-12-10 224-350-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E EVANSTON IL
2020-12-10 224-350-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E EVANSTON IL
2020-12-10 224-922-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E GLENCOE IL
2020-12-09 224-526-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-09 224-526-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-09 224-526-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-12-09 224-722-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2020-12-09 224-722-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2020-12-09 224-722-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2020-12-09 224-722-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2020-12-07 224-363-7XXX 7000–7999Assigned METROPCS, INC. 5562 ELGIN IL
2020-12-07 224-722-3XXX 3000–3999Assigned ONVOY, LLC 224C ELK GROVE IL
2020-12-07 224-722-4XXX 4000–4999Assigned ONVOY, LLC 224C ELK GROVE IL
2020-12-07 224-722-5XXX 5000–5999Assigned ONVOY, LLC 224C ELK GROVE IL
2020-12-07 224-722-6XXX 6000–6999Assigned ONVOY, LLC 224C ELK GROVE IL
2020-12-07 224-722-7XXX 7000–7999Assigned ONVOY, LLC 224C ELK GROVE IL
2020-11-30 224-799-9XXX 9000–9999Assigned FRACTEL, LLC 965H NORTHBROOK IL
2020-11-24 224-354-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2020-11-24 224-354-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2020-11-13 224-272-0XXX 0000–0999Assigned STRATUS NETWORKS 495J ZION IL
2020-11-13 224-333-8XXX 8000–8999Assigned STRATUS NETWORKS 495J ALGONQUIN IL
2020-11-13 224-354-0XXX 0000–0999Assigned STRATUS NETWORKS 495J DESPLAINES IL
2020-11-13 224-363-6XXX 6000–6999Assigned STRATUS NETWORKS 495J ELGIN 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.