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
2003-01-15 847-972-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SKOKIE IL
2003-01-02 847-230-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROSELLE IL
2003-01-02 847-241-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALATINE IL
2003-01-02 847-354-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELK GROVE IL
2003-01-02 847-929-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
2002-12-20 847-553-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
2002-12-20 847-563-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EVANSTON IL
2002-12-20 847-929-0XXX 0000–0999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 SKOKIE IL
2002-12-20 847-984-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LIBERTYVL IL
2002-11-22 847-529-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2002-11-22 847-529-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2002-11-22 847-529-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2002-11-19 847-448-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EVANSTON IL
2002-11-18 847-553-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 DESPLAINES IL
2002-11-18 847-553-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 DESPLAINES IL
2002-11-15 847-353-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2002-11-15 847-947-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2002-11-15 847-947-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2002-10-30 847-282-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DEERFIELD IL
2002-10-30 847-713-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BARRINGTON IL
2002-10-24 847-929-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
2002-10-24 847-929-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
2002-10-23 847-315-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-10-23 847-315-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-10-23 847-315-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-10-23 847-315-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-10-23 847-315-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-10-23 847-315-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-10-23 847-315-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-10-23 847-315-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-10-14 847-775-0XXX 0000–0999Assigned ONVOY, LLC 224C WAUKEGAN IL
2002-10-02 847-484-6XXX 6000–6999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 WHEELING IL
2002-09-30 847-754-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2002-09-16 847-756-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 BARRINGTON IL
2002-09-16 847-756-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 BARRINGTON IL
2002-09-12 847-415-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J HALF DAY IL
2002-09-12 847-901-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J GLENVIEW IL
2002-09-10 847-754-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 ARLIGTNHTS IL
2002-09-06 847-407-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROSELLE IL
2002-08-27 847-406-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WAUKEGAN IL
2002-08-27 847-463-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARLIGTNHTS IL
2002-08-26 847-972-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SKOKIE IL
2002-08-21 847-930-1XXX 1000–1999Assigned RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 8702 ELGIN IL
2002-08-21 847-947-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K WHEELING IL
2002-08-01 847-964-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-08-01 847-964-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-08-01 847-964-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-08-01 847-964-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
2002-07-22 847-905-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 EVANSTON IL
2002-07-22 847-905-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 EVANSTON 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.