NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 847
ONVOY, LLC 2
BANDWIDTH.COM CLEC, LLC - IL 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
2005-04-08 847-944-0XXX 0000–0999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E ROSELLE IL
2005-04-07 847-346-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-04-06 847-453-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HAMPSHIRE IL
2005-04-06 847-453-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HAMPSHIRE IL
2005-04-06 847-629-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FOX LAKE IL
2005-04-06 847-973-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FOX LAKE IL
2005-04-05 847-281-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C LIBERTYVL IL
2005-04-05 847-387-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C BARRINGTON IL
2005-04-04 847-403-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
2005-03-15 847-856-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2005-03-08 847-379-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ZION IL
2005-03-04 847-752-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GRAYSLAKE IL
2005-03-03 847-829-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CARY IL
2005-03-02 847-346-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-03-02 847-346-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-02-23 847-246-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K ZION IL
2005-02-23 847-260-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K FRANKLINPK IL
2005-02-23 847-305-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K ARLIGTNHTS IL
2005-02-23 847-324-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K SKOKIE IL
2005-02-23 847-403-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K WHEELING IL
2005-02-23 847-495-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
2005-02-23 847-512-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WILMETTE IL
2005-02-23 847-512-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WILMETTE IL
2005-02-23 847-558-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROSELLE IL
2005-02-23 847-665-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K GRAYSLAKE IL
2005-02-23 847-665-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GRAYSLAKE IL
2005-02-23 847-784-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K WINNETKA IL
2005-02-23 847-886-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K ROUND LAKE IL
2005-02-23 847-978-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PISTAKHLDS IL
2005-02-23 847-978-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PISTAKHLDS IL
2005-02-22 847-901-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GLENVIEW IL
2005-02-18 847-305-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2005-02-18 847-305-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2005-02-18 847-305-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2005-02-17 847-346-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-02-17 847-346-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-02-17 847-388-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MUNDELEIN IL
2005-02-17 847-393-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MUNDELEIN IL
2005-02-17 847-430-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PARK RIDGE IL
2005-02-17 847-886-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROUND LAKE IL
2005-02-16 847-282-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DEERFIELD IL
2005-02-14 847-719-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LAKEZURICH IL
2005-02-14 847-886-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROUND LAKE IL
2005-02-11 847-282-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DEERFIELD IL
2005-02-11 847-305-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2005-02-08 847-250-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ITASCA IL
2005-02-08 847-260-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FRANKLINPK IL
2005-02-08 847-629-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J FOX LAKE IL
2005-02-08 847-659-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J HUNTLEY IL
2005-02-08 847-978-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PISTAKHLDS 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.