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
1999-07-08 847-603-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ANTIOCH IL
1999-07-08 847-653-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PARK RIDGE IL
1999-07-08 847-739-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LAKEFOREST IL
1999-07-08 847-790-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
1999-07-08 847-841-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELGIN IL
1999-07-01 847-376-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
1999-06-28 847-231-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 GRAYSLAKE IL
1999-06-28 847-231-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 GRAYSLAKE IL
1999-06-28 847-231-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 GRAYSLAKE IL
1999-06-28 847-245-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 LAKE VILLA IL
1999-06-28 847-245-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 LAKE VILLA IL
1999-06-28 847-515-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 HUNTLEY IL
1999-06-28 847-515-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 HUNTLEY IL
1999-06-21 847-400-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 NORTHBROOK IL
1999-06-21 847-656-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 NORTHBROOK IL
1999-06-18 847-376-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K DESPLAINES IL
1999-06-11 847-307-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J LAKEZURICH IL
1999-06-11 847-388-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MUNDELEIN IL
1999-06-11 847-406-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WAUKEGAN IL
1999-06-11 847-649-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DUNDEE IL
1999-06-10 847-777-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
1999-06-10 847-777-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
1999-06-10 847-850-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
1999-06-04 847-748-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HIGHLANDPK IL
1999-06-03 847-231-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GRAYSLAKE IL
1999-06-03 847-245-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LAKE VILLA IL
1999-06-03 847-379-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ZION IL
1999-06-03 847-388-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MUNDELEIN IL
1999-06-03 847-461-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GLENCOE IL
1999-06-03 847-954-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
1999-06-02 847-410-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 SKOKIE IL
1999-06-02 847-434-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ELK GROVE IL
1999-06-02 847-750-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BENSENVL IL
1999-05-27 847-327-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LIBERTYVL IL
1999-05-27 847-954-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
1999-05-27 847-954-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
1999-05-25 847-273-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 ROSELLE IL
1999-05-25 847-348-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALATINE IL
1999-05-25 847-425-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 EVANSTON IL
1999-05-21 847-572-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
1999-05-21 847-572-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 DEERFIELD IL
1999-05-11 847-214-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 ELGIN IL
1999-05-11 847-214-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 ELGIN IL
1999-05-11 847-214-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 ELGIN IL
1999-05-11 847-425-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 EVANSTON IL
1999-05-11 847-425-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 EVANSTON IL
1999-05-11 847-631-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELK GROVE IL
1999-05-10 847-850-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WHEELING IL
1999-05-10 847-990-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LIBERTYVL IL
1999-05-10 847-990-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LIBERTYVL 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.