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
2005-09-29 847-544-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2005-09-13 847-770-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 NORTHBROOK IL
2005-09-08 847-305-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-09-07 847-461-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GLENCOE IL
2005-09-02 847-886-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROUND LAKE IL
2005-09-01 847-321-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
2005-09-01 847-460-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DESPLAINES IL
2005-09-01 847-653-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K PARK RIDGE IL
2005-09-01 847-851-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DUNDEE IL
2005-09-01 847-851-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DUNDEE IL
2005-09-01 847-983-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SKOKIE IL
2005-08-30 847-353-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J WHEELING IL
2005-08-25 847-730-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K GLENVIEW IL
2005-08-16 847-239-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 NORTHBROOK IL
2005-08-16 847-305-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-08-16 847-346-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2005-08-15 847-464-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PLATO CTR IL
2005-08-15 847-730-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K GLENVIEW IL
2005-08-15 847-730-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GLENVIEW IL
2005-08-15 847-794-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PALATINE IL
2005-08-09 847-621-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELK GROVE IL
2005-08-01 847-232-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PARK RIDGE IL
2005-08-01 847-264-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ELK GROVE IL
2005-08-01 847-307-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAKEZURICH IL
2005-08-01 847-346-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ARLIGTNHTS IL
2005-08-01 847-346-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ARLIGTNHTS IL
2005-08-01 847-346-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ARLIGTNHTS IL
2005-08-01 847-430-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PARK RIDGE IL
2005-08-01 847-720-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PARK RIDGE IL
2005-08-01 847-720-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PARK RIDGE IL
2005-08-01 847-720-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PARK RIDGE IL
2005-08-01 847-748-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HIGHLANDPK IL
2005-08-01 847-984-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LIBERTYVL IL
2005-08-01 847-984-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LIBERTYVL IL
2005-08-01 847-996-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LIBERTYVL IL
2005-08-01 847-996-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LIBERTYVL IL
2005-07-29 847-779-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 SKOKIE IL
2005-07-29 847-779-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 SKOKIE IL
2005-07-29 847-960-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ALGONQUIN IL
2005-07-29 847-972-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 SKOKIE IL
2005-07-27 847-720-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K PARK RIDGE IL
2005-07-25 847-261-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 FRANKLINPK IL
2005-07-25 847-261-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 FRANKLINPK IL
2005-07-25 847-513-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2005-07-25 847-513-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2005-07-25 847-513-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2005-07-25 847-513-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2005-07-25 847-586-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DUNDEE IL
2005-07-25 847-586-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DUNDEE IL
2005-07-25 847-713-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BARRINGTON 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.