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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2018-10-22 224-294-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-22 224-294-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-22 224-294-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-22 224-294-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-22 224-294-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-22 224-294-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-22 224-294-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-22 224-295-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2018-10-22 224-295-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2018-10-22 224-818-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROUND LAKE IL
2018-10-17 224-266-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2018-10-17 224-266-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2018-10-17 224-266-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2018-10-17 224-266-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2018-10-17 224-266-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2018-10-17 224-266-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2018-10-17 224-266-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELK GROVE IL
2018-10-17 224-605-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2018-10-17 224-605-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2018-10-17 224-605-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2018-10-17 224-605-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2018-10-17 224-769-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2018-10-17 224-769-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2018-10-17 224-769-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2018-10-12 224-284-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DEERFIELD IL
2018-10-12 224-284-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DEERFIELD IL
2018-10-12 224-284-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DEERFIELD IL
2018-10-12 224-284-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DEERFIELD IL
2018-10-12 224-322-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2018-10-12 224-322-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2018-10-12 224-322-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2018-10-12 224-322-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2018-10-12 224-322-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2018-10-12 224-322-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2018-10-12 224-607-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2018-10-10 224-266-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E ELK GROVE IL
2018-10-10 224-538-7XXX 7000–7999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E WAUKEGAN IL
2018-10-09 224-275-9XXX 9000–9999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E DESPLAINES IL
2018-10-09 224-288-6XXX 6000–6999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E BARRINGTON IL
2018-10-09 224-428-1XXX 1000–1999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E ALGONQUIN IL
2018-10-09 224-551-6XXX 6000–6999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E DEERFIELD IL
2018-10-09 224-607-6XXX 6000–6999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E ARLIGTNHTS IL
2018-10-03 224-292-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUNDELEIN IL
2018-10-02 224-282-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2018-09-21 224-732-5XXX 5000–5999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E WAUCONDA IL
2018-09-14 224-275-7XXX 7000–7999Assigned METROPCS, INC. 5562 DESPLAINES IL
2018-09-14 224-275-8XXX 8000–8999Assigned METROPCS, INC. 5562 DESPLAINES IL
2018-09-14 224-290-2XXX 2000–2999Assigned METROPCS, INC. 5562 ELGIN IL
2018-09-07 224-529-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J GLENVIEW IL
2018-09-07 224-529-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J GLENVIEW 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.