NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 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 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-08-19 815-713-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ROCKFORD IL
2005-08-19 815-713-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J ROCKFORD IL
2005-08-19 815-713-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ROCKFORD IL
2005-08-12 815-272-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2005-08-09 815-997-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2005-08-09 815-997-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2005-08-01 815-280-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 JOLIET IL
2005-08-01 815-315-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 ROCKFORD IL
2005-08-01 815-321-6XXX 6000–6999Assigned ONVOY, LLC 224C WOODSTOCK IL
2005-08-01 815-321-7XXX 7000–7999Assigned ONVOY, LLC 224C WOODSTOCK IL
2005-08-01 815-321-8XXX 8000–8999Assigned ONVOY, LLC 224C WOODSTOCK IL
2005-08-01 815-531-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 JOLIET IL
2005-08-01 815-531-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 JOLIET IL
2005-08-01 815-642-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 MINOOKA IL
2005-08-01 815-839-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 KANKAKEE IL
2005-08-01 815-839-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 KANKAKEE IL
2005-08-01 815-880-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 WOODSTOCK IL
2005-08-01 815-880-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 WOODSTOCK IL
2005-08-01 815-880-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 WOODSTOCK IL
2005-07-15 815-209-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2005-07-14 815-526-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 CRYSTAL LK IL
2005-07-14 815-526-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 CRYSTAL LK IL
2005-07-08 815-212-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2005-07-01 815-997-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2005-06-30 815-531-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2005-06-30 815-531-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2005-06-23 815-280-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2005-06-23 815-280-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2005-06-22 815-321-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K WOODSTOCK IL
2005-06-22 815-526-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CRYSTAL LK IL
2005-06-22 815-531-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2005-06-22 815-608-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2005-06-22 815-768-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2005-06-22 815-768-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2005-06-22 815-768-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2005-06-22 815-768-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2005-06-22 815-997-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2005-06-22 815-997-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2005-06-22 815-999-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2005-06-16 815-323-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BELVIDERE IL
2005-06-16 815-768-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 JOLIET IL
2005-06-16 815-768-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 JOLIET IL
2005-06-16 815-768-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 JOLIET IL
2005-06-16 815-768-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 JOLIET IL
2005-06-09 815-713-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ROCKFORD IL
2005-06-07 815-207-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2005-06-01 815-534-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FRANKFORT IL
2005-06-01 815-534-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FRANKFORT IL
2005-05-31 815-230-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 PLAINFIELD IL
2005-05-18 815-893-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K CRYSTAL LK 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.