NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 815
VERSATEL LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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
2010-10-21 815-415-7XXX 7000–7999Assigned ONVOY, LLC 224C SENECA IL
2010-10-21 815-415-8XXX 8000–8999Assigned ONVOY, LLC 224C SENECA IL
2010-10-20 815-999-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2010-10-19 815-240-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ROCK CUT IL
2010-10-11 815-618-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREEPORT IL
2010-10-06 815-524-2XXX 2000–2999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E LOCKPORT IL
2010-10-06 815-524-6XXX 6000–6999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E LOCKPORT IL
2010-09-29 815-760-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BUREAU IL
2010-09-29 815-764-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DE KALB IL
2010-09-24 815-307-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2010-09-23 815-733-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PLAINFIELD IL
2010-09-20 815-231-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2010-09-20 815-516-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2010-09-20 815-668-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2010-09-15 815-315-8XXX 8000–8999Assigned ONVOY, LLC 224C ROCKFORD IL
2010-09-10 815-386-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2010-09-09 815-390-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BRAIDWOOD IL
2010-09-09 815-770-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HARVARD IL
2010-09-03 815-463-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E NEW LENOX IL
2010-09-03 815-770-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HARVARD IL
2010-09-01 815-255-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MINOOKA IL
2010-08-30 815-305-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GARDNER IL
2010-08-30 815-656-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 FREEPORT IL
2010-08-27 815-668-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROCKFORD IL
2010-08-26 815-679-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K MCHENRY IL
2010-08-26 815-909-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2010-08-26 815-909-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2010-08-23 815-668-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J ROCKFORD IL
2010-08-19 815-414-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EARLVILLE IL
2010-08-13 815-450-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOMENCE IL
2010-08-11 815-216-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E KANKAKEE IL
2010-08-11 815-524-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LOCKPORT IL
2010-08-11 815-556-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PLAINFIELD IL
2010-08-10 815-417-6XXX 6000–6999Assigned ONVOY, LLC 224C BRAIDWOOD IL
2010-08-10 815-417-8XXX 8000–8999Assigned ONVOY, LLC 224C BRAIDWOOD IL
2010-08-10 815-417-9XXX 9000–9999Assigned ONVOY, LLC 224C BRAIDWOOD IL
2010-08-09 815-534-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FRANKFORT IL
2010-08-09 815-673-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STREATOR IL
2010-08-06 815-900-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2010-08-04 815-668-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD IL
2010-08-03 815-681-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2010-08-03 815-909-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2010-08-02 815-668-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2010-08-02 815-668-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2010-07-30 815-914-0XXX 0000–0999Assigned METROPCS, INC. 5562 ROCKFORD IL
2010-07-28 815-271-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J MCHENRY IL
2010-07-27 815-270-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ROSCOE IL
2010-07-26 815-663-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPRING VLY IL
2010-07-22 815-313-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 OTTAWA IL
2010-07-22 815-317-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CRESCENTCY 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.