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
2021-05-13 224-349-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-05-13 224-349-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-05-13 224-822-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-05-13 224-822-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-05-13 224-822-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-05-13 224-822-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-05-10 224-993-8XXX 8000–8999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E WAUCONDA IL
2021-05-08 224-472-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J WINNETKA IL
2021-05-04 224-452-4XXX 4000–4999Assigned ONVOY, LLC 224C PALATINE IL
2021-05-04 224-472-4XXX 4000–4999Assigned ONVOY, LLC 224C WINNETKA IL
2021-05-03 224-373-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DEERFIELD IL
2021-04-28 224-369-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WAUKEGAN IL
2021-04-22 224-781-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 FRANKLINPK IL
2021-04-20 224-451-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARRINGTON IL
2021-04-20 224-451-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARRINGTON IL
2021-04-19 224-375-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-04-19 224-375-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-04-19 224-375-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-04-15 224-840-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2021-04-15 224-840-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2021-04-12 224-922-8XXX 8000–8999Assigned TELNYX LLC 073H GLENCOE IL
2021-04-02 224-382-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 GLENVIEW IL
2021-03-26 224-376-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOX LAKE IL
2021-03-26 224-654-3XXX 3000–3999Assigned TELNYX LLC 073H HUNTLEY IL
2021-03-25 224-295-6XXX 6000–6999Assigned ONVOY, LLC 224C PALATINE IL
2021-03-25 224-335-7XXX 7000–7999Assigned ONVOY, LLC 224C ANTIOCH IL
2021-03-25 224-335-9XXX 9000–9999Assigned ONVOY, LLC 224C ANTIOCH IL
2021-03-23 224-451-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARRINGTON IL
2021-03-10 224-375-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-03-10 224-375-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-03-10 224-375-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-03-05 224-348-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-03-05 224-348-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-03-03 224-348-2XXX 2000–2999Assigned ONVOY, LLC 224C ALGONQUIN IL
2021-03-03 224-348-3XXX 3000–3999Assigned ONVOY, LLC 224C ALGONQUIN IL
2021-03-03 224-357-1XXX 1000–1999Assigned ONVOY, LLC 224C CARY IL
2021-03-03 224-371-1XXX 1000–1999Assigned ONVOY, LLC 224C GRAYSLAKE IL
2021-03-03 224-371-2XXX 2000–2999Assigned ONVOY, LLC 224C GRAYSLAKE IL
2021-03-03 224-371-3XXX 3000–3999Assigned ONVOY, LLC 224C GRAYSLAKE IL
2021-03-03 224-371-4XXX 4000–4999Assigned ONVOY, LLC 224C GRAYSLAKE IL
2021-03-03 224-487-4XXX 4000–4999Assigned ONVOY, LLC 224C CARY IL
2021-03-03 224-488-1XXX 1000–1999Assigned ONVOY, LLC 224C GLENVIEW IL
2021-03-03 224-488-9XXX 9000–9999Assigned ONVOY, LLC 224C GLENVIEW IL
2021-02-23 224-371-0XXX 0000–0999Assigned TELNYX LLC 073H GRAYSLAKE IL
2021-02-11 224-373-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DEERFIELD IL
2021-02-11 224-373-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DEERFIELD IL
2021-02-11 224-544-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKEFOREST IL
2021-02-08 224-371-7XXX 7000–7999Assigned ONVOY, LLC 224C GRAYSLAKE IL
2021-02-08 224-371-8XXX 8000–8999Assigned ONVOY, LLC 224C GRAYSLAKE IL
2021-02-02 224-263-5XXX 5000–5999Assigned ONVOY, LLC 224C HUNTLEY 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.