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
2015-01-26 224-518-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-26 224-518-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-26 224-518-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-26 224-518-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-20 224-510-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-20 224-510-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WHEELING IL
2015-01-16 224-830-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-16 224-830-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-14 224-505-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WINNETKA IL
2015-01-12 224-662-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K LAKEZURICH IL
2015-01-10 224-516-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAKEFOREST IL
2015-01-06 224-386-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2015-01-06 224-386-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2015-01-06 224-386-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2015-01-06 224-386-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2015-01-06 224-386-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2015-01-06 224-706-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAKEFOREST IL
2015-01-06 224-706-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAKEFOREST IL
2015-01-06 224-706-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAKEFOREST IL
2015-01-05 224-509-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ALGONQUIN IL
2014-12-30 224-352-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HALF DAY IL
2014-12-29 224-248-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J ARLIGTNHTS IL
2014-12-29 224-478-7XXX 7000–7999Assigned METROPCS, INC. 5562 DESPLAINES IL
2014-12-29 224-478-8XXX 8000–8999Assigned METROPCS, INC. 5562 DESPLAINES IL
2014-12-29 224-505-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WINNETKA IL
2014-12-23 224-458-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2014-12-19 224-507-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DEERFIELD IL
2014-12-19 224-714-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EVANSTON IL
2014-12-19 224-714-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EVANSTON IL
2014-12-19 224-714-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EVANSTON IL
2014-12-17 224-505-0XXX 0000–0999Assigned ONVOY, LLC 224C WINNETKA IL
2014-12-17 224-505-1XXX 1000–1999Assigned ONVOY, LLC 224C WINNETKA IL
2014-12-17 224-505-2XXX 2000–2999Assigned ONVOY, LLC 224C WINNETKA IL
2014-12-16 224-727-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DEERFIELD IL
2014-12-16 224-727-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DEERFIELD IL
2014-12-15 224-386-0XXX 0000–0999Assigned ONVOY, LLC 224C PALATINE IL
2014-12-15 224-386-1XXX 1000–1999Assigned ONVOY, LLC 224C PALATINE IL
2014-12-15 224-470-7XXX 7000–7999Assigned ONVOY, LLC 224C SKOKIE IL
2014-12-15 224-470-8XXX 8000–8999Assigned ONVOY, LLC 224C SKOKIE IL
2014-12-15 224-479-0XXX 0000–0999Assigned ONVOY, LLC 224C NORTHBROOK IL
2014-12-15 224-479-1XXX 1000–1999Assigned ONVOY, LLC 224C NORTHBROOK IL
2014-12-15 224-714-0XXX 0000–0999Assigned ONVOY, LLC 224C EVANSTON 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.