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
2011-03-25 815-867-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - IL 259E PONTIAC IL
2011-03-25 815-989-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - IL 259E PROPHETSTN IL
2011-03-25 815-991-7XXX 7000–7999Assigned YMAX COMMUNICATIONS CORP. - IL 259E SYCAMORE IL
2011-03-25 815-991-8XXX 8000–8999Assigned YMAX COMMUNICATIONS CORP. - IL 259E SYCAMORE IL
2011-03-24 815-300-0XXX 0000–0999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2011-03-24 815-300-1XXX 1000–1999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2011-03-24 815-300-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2011-03-24 815-300-8XXX 8000–8999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2011-03-24 815-300-9XXX 9000–9999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2011-03-10 815-310-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 UTICA IL
2011-03-10 815-313-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OTTAWA IL
2011-03-10 815-649-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GARDNER IL
2011-03-10 815-975-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BELVIDERE IL
2011-03-03 815-402-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GALENA IL
2011-03-03 815-618-1XXX 1000–1999Assigned METROPCS, INC. 5562 FREEPORT IL
2011-03-02 815-556-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J PLAINFIELD IL
2011-03-01 815-769-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SENECA IL
2011-02-24 815-733-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PLAINFIELD IL
2011-02-24 815-981-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DE KALB IL
2011-02-11 815-649-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GARDNER IL
2011-02-10 815-250-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LA SALLE IL
2011-02-10 815-250-3XXX 3000–3999Assigned METROPCS, INC. 5562 LA SALLE IL
2011-02-10 815-662-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOMENCE IL
2011-02-02 815-297-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 FREEPORT IL
2011-01-31 815-719-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PRINCETON IL
2011-01-28 815-999-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2011-01-14 815-681-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2011-01-14 815-681-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2011-01-14 815-842-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PONTIAC IL
2011-01-13 815-714-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 JOLIET IL
2011-01-07 815-510-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STREATOR IL
2010-12-23 815-300-2XXX 2000–2999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2010-12-23 815-300-3XXX 3000–3999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2010-12-23 815-300-4XXX 4000–4999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2010-12-23 815-300-5XXX 5000–5999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2010-12-23 815-300-6XXX 6000–6999Assigned ILLINOIS BELL TEL CO 9329 NEW LENOX IL
2010-12-21 815-681-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2010-12-07 815-323-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 BELVIDERE IL
2010-12-07 815-386-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2010-12-07 815-386-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2010-12-07 815-662-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOMENCE IL
2010-12-03 815-261-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CRYSTAL LK IL
2010-12-02 815-506-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J UNION IL
2010-12-02 815-526-1XXX 1000–1999Assigned FIRST COMMUNICATIONS, LLC 460K CRYSTAL LK IL
2010-11-05 815-419-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PONTIAC IL
2010-11-01 815-206-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WOODSTOCK IL
2010-11-01 815-217-5XXX 5000–5999Assigned METROPCS, INC. 5562 DE KALB IL
2010-11-01 815-526-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CRYSTAL LK IL
2010-10-25 815-200-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LA SALLE IL
2010-10-21 815-213-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 STERLING 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.