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
2000-06-21 847-664-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 NORTHBROOK IL
2000-06-21 847-871-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 ELK GROVE IL
2000-06-19 847-252-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 ROSELLE IL
2000-06-19 847-264-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 ELK GROVE IL
2000-06-19 847-415-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 HALF DAY IL
2000-06-19 847-415-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 HALF DAY IL
2000-06-19 847-415-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 HALF DAY IL
2000-06-19 847-784-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 WINNETKA IL
2000-06-19 847-844-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 DUNDEE IL
2000-06-16 847-643-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 MUNDELEIN IL
2000-06-16 847-643-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 MUNDELEIN IL
2000-06-16 847-717-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 ELGIN IL
2000-06-16 847-717-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 ELGIN IL
2000-06-16 847-717-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 ELGIN IL
2000-06-16 847-717-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 ELGIN IL
2000-06-15 847-261-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 FRANKLINPK IL
2000-06-14 847-585-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROSELLE IL
2000-06-13 847-214-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J ELGIN IL
2000-06-08 847-245-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 LAKE VILLA IL
2000-05-30 847-453-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HAMPSHIRE IL
2000-05-30 847-603-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ANTIOCH IL
2000-05-30 847-717-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELGIN IL
2000-05-26 847-440-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 EVANSTON IL
2000-05-26 847-790-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
2000-05-24 847-261-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 FRANKLINPK IL
2000-05-18 847-493-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 DESPLAINES IL
2000-05-18 847-493-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 DESPLAINES IL
2000-05-11 847-349-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 FRANKLINPK IL
2000-05-11 847-349-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FRANKLINPK IL
2000-05-11 847-430-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PARK RIDGE IL
2000-05-11 847-504-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 NORTHBROOK IL
2000-05-11 847-504-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 NORTHBROOK IL
2000-05-10 847-775-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 WAUKEGAN IL
2000-05-04 847-993-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 PARK RIDGE IL
2000-04-26 847-964-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DEERFIELD IL
2000-04-07 847-385-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 ARLIGTNHTS IL
2000-04-07 847-385-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 ARLIGTNHTS IL
2000-04-07 847-385-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 ARLIGTNHTS IL
2000-04-07 847-631-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELK GROVE IL
2000-03-31 847-418-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 NORTHBROOK IL
2000-03-09 847-512-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WILMETTE IL
2000-03-05 847-353-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2000-03-05 847-353-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2000-03-05 847-353-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 WHEELING IL
2000-02-29 847-281-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LIBERTYVL IL
2000-02-29 847-457-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LAKEFOREST IL
2000-02-29 847-716-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WINNETKA IL
2000-02-28 847-348-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PALATINE IL
2000-02-28 847-801-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 FRANKLINPK IL
2000-02-25 847-327-9XXX 9000–9999Assigned ILLINOIS BELL TEL CO 9329 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.