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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2015-04-14 224-458-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E NORTHBROOK IL
2015-04-14 224-458-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E NORTHBROOK IL
2015-04-14 224-518-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ARLIGTNHTS IL
2015-04-14 224-518-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ARLIGTNHTS IL
2015-04-14 224-901-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PISTAKHLDS IL
2015-03-27 224-470-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 138G SKOKIE IL
2015-03-25 224-386-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 138G PALATINE IL
2015-03-25 224-530-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PLATO CTR IL
2015-03-18 224-458-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2015-03-10 224-662-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LAKEZURICH IL
2015-03-10 224-908-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J FOX LAKE IL
2015-03-09 224-818-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ROUND LAKE IL
2015-03-06 224-478-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-03-06 224-478-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2015-03-03 224-480-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WAUKEGAN IL
2015-02-25 224-347-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ARLIGTNHTS IL
2015-02-23 224-517-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
2015-02-23 224-517-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
2015-02-23 224-517-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARRINGTON IL
2015-02-23 224-716-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-23 224-716-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-19 224-818-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ROUND LAKE IL
2015-02-19 224-818-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ROUND LAKE IL
2015-02-17 224-269-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GLENCOE IL
2015-02-17 224-269-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GLENCOE IL
2015-02-17 224-509-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-17 224-509-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-17 224-509-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-17 224-509-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-17 224-509-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ALGONQUIN IL
2015-02-17 224-970-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BARTLETT IL
2015-02-10 224-236-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BARTLETT IL
2015-02-10 224-236-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BARTLETT IL
2015-02-10 224-339-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2015-02-10 224-339-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ELGIN IL
2015-02-05 224-442-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J FRANKLINPK IL
2015-02-05 224-442-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J FRANKLINPK IL
2015-01-26 224-479-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K NORTHBROOK IL
2015-01-26 224-518-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-26 224-518-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-26 224-518-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2015-01-26 224-518-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS 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.