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
2009-10-27 815-893-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J CRYSTAL LK IL
2009-10-27 815-944-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J MOMENCE IL
2009-10-22 815-556-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PLAINFIELD IL
2009-10-22 815-668-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ROCKFORD IL
2009-10-21 815-388-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J MCHENRY IL
2009-10-21 815-407-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J LOCKPORT IL
2009-10-21 815-617-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J OTTAWA IL
2009-10-16 815-348-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J KANKAKEE IL
2009-10-09 815-217-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DE KALB IL
2009-10-09 815-322-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2009-10-08 815-714-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J JOLIET IL
2009-09-30 815-977-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROCKFORD IL
2009-09-29 815-614-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2009-09-29 815-710-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2009-09-29 815-839-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2009-09-16 815-202-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2009-09-08 815-304-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2009-09-08 815-419-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PONTIAC IL
2009-09-08 815-677-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DIXON IL
2009-09-08 815-708-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2009-09-08 815-876-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PRINCETON IL
2009-08-21 815-714-7XXX 7000–7999Assigned ONVOY, LLC 224C JOLIET IL
2009-08-13 815-450-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOMENCE IL
2009-08-05 815-312-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROCKFORD IL
2009-07-09 815-506-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K UNION IL
2009-07-08 815-901-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DE KALB IL
2009-07-07 815-202-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2009-07-07 815-202-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2009-07-02 815-423-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ELWOOD IL
2009-06-22 815-516-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROCKFORD IL
2009-06-17 815-281-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GALENA IL
2009-06-11 815-995-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DE KALB IL
2009-06-09 815-202-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2009-06-09 815-641-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2009-06-09 815-641-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2009-06-04 815-426-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 HERSCHER IL
2009-04-20 815-641-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2009-04-20 815-641-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2009-04-20 815-641-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2009-04-17 815-581-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SPRING GRV IL
2009-04-16 815-271-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2009-04-15 815-412-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FRANKFORT IL
2009-04-09 815-407-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J LOCKPORT IL
2009-04-07 815-463-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K NEW LENOX IL
2009-04-03 815-668-0XXX 0000–0999Assigned ONVOY, LLC 224C ROCKFORD IL
2009-04-02 815-977-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2009-03-09 815-992-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 STREATOR IL
2009-03-03 815-839-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2009-02-25 815-575-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2009-02-20 815-534-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K FRANKFORT 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.