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
2000-10-17 847-861-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K HIGHLANDPK IL
2000-10-17 847-943-0XXX 0000–0999Assigned FIRST COMMUNICATIONS, LLC 460K DEERFIELD IL
2000-10-17 847-978-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K PISTAKHLDS IL
2000-10-16 847-325-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K WHEELING IL
2000-10-16 847-385-0XXX 0000–0999Assigned FIRST COMMUNICATIONS, LLC 460K ARLIGTNHTS IL
2000-10-16 847-881-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K WINNETKA IL
2000-10-13 847-281-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 LIBERTYVL IL
2000-10-01 847-994-0XXX 0000–0999Assigned FIRST COMMUNICATIONS, LLC 460K FRANKLINPK IL
2000-09-29 847-423-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
2000-09-29 847-659-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HUNTLEY IL
2000-09-29 847-801-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FRANKLINPK IL
2000-09-27 847-276-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HALF DAY IL
2000-09-25 847-654-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALATINE IL
2000-09-25 847-941-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K WHEELING IL
2000-09-15 847-621-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELK GROVE IL
2000-09-08 847-580-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DEERFIELD IL
2000-08-31 847-801-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FRANKLINPK IL
2000-08-30 847-416-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WAUCONDA IL
2000-08-29 847-406-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 WAUKEGAN IL
2000-08-29 847-406-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 WAUKEGAN IL
2000-08-17 847-453-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 HAMPSHIRE IL
2000-08-17 847-515-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 HUNTLEY IL
2000-08-17 847-603-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ANTIOCH IL
2000-08-17 847-739-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAKEFOREST IL
2000-08-17 847-829-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 CARY IL
2000-08-16 847-941-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2000-08-16 847-941-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2000-08-04 847-513-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
2000-08-04 847-984-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LIBERTYVL IL
2000-08-04 847-984-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LIBERTYVL IL
2000-08-03 847-379-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 ZION IL
2000-08-03 847-379-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 ZION IL
2000-08-03 847-379-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 ZION IL
2000-08-03 847-954-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K DESPLAINES IL
2000-08-01 847-440-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K EVANSTON IL
2000-08-01 847-453-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K HAMPSHIRE IL
2000-08-01 847-458-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K ALGONQUIN IL
2000-08-01 847-582-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K LAKEFOREST IL
2000-08-01 847-603-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K ANTIOCH IL
2000-08-01 847-760-9XXX 9000–9999Assigned FIRST COMMUNICATIONS, LLC 460K ELGIN IL
2000-08-01 847-849-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K NORTHBROOK IL
2000-07-24 847-376-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
2000-07-19 847-245-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKE VILLA IL
2000-07-05 847-810-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 LAKEFOREST IL
2000-07-05 847-810-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 LAKEFOREST IL
2000-07-05 847-810-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 LAKEFOREST IL
2000-07-05 847-810-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 LAKEFOREST IL
2000-07-05 847-984-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 LIBERTYVL IL
2000-06-21 847-400-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 NORTHBROOK IL
2000-06-21 847-418-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 NORTHBROOK 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.