NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2013-05-23 224-231-8XXX 8000–8999Assigned METROPCS, INC. 5562 ROSELLE IL
2013-05-23 224-247-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-23 224-247-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-23 224-247-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-23 224-247-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-23 224-247-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-23 224-326-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-23 224-326-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-23 224-326-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-23 224-326-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-23 224-326-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-21 224-247-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-15 224-203-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-203-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-203-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-316-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-316-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-316-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-324-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-15 224-324-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-15 224-324-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-15 224-324-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-06 224-203-5XXX 5000–5999Assigned ONVOY, LLC 224C NORTHBROOK IL
2013-05-06 224-404-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ELK GROVE IL
2013-05-06 224-484-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E DUNDEE IL
2013-05-03 224-408-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WILMETTE IL
2013-05-02 224-401-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2013-05-02 224-401-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2013-04-29 224-255-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WINNETKA IL
2013-04-29 224-900-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WHEELING IL
2013-04-29 224-900-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WHEELING IL
2013-04-26 224-407-8XXX 8000–8999Assigned ONVOY, LLC 224C ELGIN IL
2013-04-26 224-407-9XXX 9000–9999Assigned ONVOY, LLC 224C ELGIN IL
2013-04-26 224-900-4XXX 4000–4999Assigned ONVOY, LLC 224C WHEELING IL
2013-04-26 224-900-5XXX 5000–5999Assigned ONVOY, LLC 224C WHEELING IL
2013-04-25 224-304-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ZION IL
2013-04-25 224-304-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ZION IL
2013-04-25 224-326-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NORTHBROOK IL
2013-04-22 224-247-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-04-22 224-427-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
2013-04-22 224-427-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
2013-04-15 224-315-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J DESPLAINES IL
2013-04-12 224-864-5XXX 5000–5999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E MUNDELEIN IL
2013-04-12 224-864-6XXX 6000–6999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E MUNDELEIN IL
2013-04-12 224-901-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E PISTAKHLDS IL
2013-04-12 224-901-1XXX 1000–1999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E PISTAKHLDS IL
2013-04-11 224-310-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-04-09 224-205-1XXX 1000–1999Assigned IP HORIZON LLC 515J NORTHBROOK IL
2013-04-09 224-307-1XXX 1000–1999Assigned IP HORIZON LLC 515J EVANSTON IL
2013-04-09 224-308-5XXX 5000–5999Assigned IP HORIZON LLC 515J ROUND LAKE IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.