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
2015-07-08 224-339-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2015-07-08 224-443-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-07-08 224-443-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-07-08 224-443-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-07-08 224-470-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SKOKIE IL
2015-07-08 224-661-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 GLENVIEW IL
2015-07-01 224-352-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HALF DAY IL
2015-06-30 224-258-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-06-30 224-258-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-06-30 224-258-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-06-30 224-258-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-06-30 224-258-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-06-30 224-258-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-06-30 224-258-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-06-30 224-258-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-06-26 224-434-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WHEELING IL
2015-06-26 224-505-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WINNETKA IL
2015-06-24 224-857-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLIGTNHTS IL
2015-06-23 224-808-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2015-06-23 224-808-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2015-06-18 224-434-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHEELING IL
2015-06-18 224-434-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHEELING IL
2015-06-17 224-252-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J GRAYSLAKE IL
2015-06-17 224-908-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOX LAKE IL
2015-06-10 224-435-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K GLENVIEW IL
2015-06-09 224-458-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2015-06-09 224-458-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2015-06-09 224-908-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOX LAKE IL
2015-06-02 224-470-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SKOKIE IL
2015-06-02 224-505-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WINNETKA IL
2015-05-27 224-469-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2015-05-21 224-802-9XXX 9000–9999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 DUNDEE IL
2015-05-20 224-434-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WHEELING IL
2015-05-19 224-480-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2015-05-18 224-423-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-05-18 224-478-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-05-18 224-478-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-05-18 224-478-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-05-18 224-760-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2015-05-12 224-435-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E GLENVIEW IL
2015-05-12 224-530-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E PLATO CTR IL
2015-05-06 224-714-4XXX 4000–4999Assigned ONVOY, LLC 224C EVANSTON IL
2015-05-06 224-714-6XXX 6000–6999Assigned ONVOY, LLC 224C EVANSTON IL
2015-04-16 224-442-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 138G FRANKLINPK IL
2015-04-16 224-908-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E FOX LAKE IL
2015-04-15 224-458-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2015-04-15 224-707-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 HIGHLANDPK IL
2015-04-14 224-347-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ARLIGTNHTS IL
2015-04-14 224-412-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E NORTHBROOK IL
2015-04-14 224-458-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E NORTHBROOK 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.