NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

3 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
1999-02-15 847-620-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J BARRINGTON IL
1999-02-15 847-784-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J WINNETKA IL
1999-02-15 847-832-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J GLENVIEW IL
1999-02-15 847-897-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J NORTHBROOK IL
1999-02-15 847-932-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J LIBERTYVL IL
1999-02-15 847-939-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PARK RIDGE IL
1999-02-09 847-276-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HALF DAY IL
1999-02-09 847-325-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WHEELING IL
1999-02-09 847-425-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EVANSTON IL
1999-02-06 847-327-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 LIBERTYVL IL
1999-02-06 847-327-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 LIBERTYVL IL
1999-02-06 847-327-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 LIBERTYVL IL
1999-02-06 847-327-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 LIBERTYVL IL
1999-01-29 847-656-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
1999-01-19 847-324-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 SKOKIE IL
1999-01-19 847-993-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 PARK RIDGE IL
1999-01-07 847-495-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
1999-01-07 847-596-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WAUKEGAN IL
1999-01-07 847-654-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALATINE IL
1999-01-07 847-881-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WINNETKA IL
1998-12-15 847-371-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LIBERTYVL IL
1998-12-03 847-332-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EVANSTON IL
1998-11-23 847-245-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 LAKE VILLA IL
1998-11-23 847-572-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
1998-11-23 847-709-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 ELK GROVE IL
1998-11-23 847-709-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 ELK GROVE IL
1998-10-23 847-201-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROUND LAKE IL
1998-10-23 847-214-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ELGIN IL
1998-10-23 847-230-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ROSELLE IL
1998-10-23 847-285-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ROSELLE IL
1998-10-23 847-376-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J DESPLAINES IL
1998-10-23 847-377-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WAUKEGAN IL
1998-10-23 847-378-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ELK GROVE IL
1998-10-23 847-430-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PARK RIDGE IL
1998-10-23 847-454-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ARLIGTNHTS IL
1998-10-23 847-515-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 HUNTLEY IL
1998-10-23 847-563-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 EVANSTON IL
1998-10-23 847-748-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HIGHLANDPK IL
1998-10-23 847-794-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PALATINE IL
1998-10-23 847-844-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J DUNDEE IL
1998-10-23 847-897-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 NORTHBROOK IL
1998-10-23 847-932-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LIBERTYVL IL
1998-10-12 847-481-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 ARLIGTNHTS IL
1998-10-06 847-232-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PARK RIDGE IL
1998-09-30 847-448-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 EVANSTON IL
1998-09-28 847-460-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
1998-09-21 847-424-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 EVANSTON IL
1998-09-10 847-410-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
1998-09-10 847-850-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
1998-08-28 847-871-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELK GROVE IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.