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
2009-02-09 815-585-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2009-02-09 815-585-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2009-01-23 815-450-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOMENCE IL
2009-01-23 815-450-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOMENCE IL
2009-01-06 815-307-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-12-16 815-312-0XXX 0000–0999Assigned ONVOY, LLC 224C ROCKFORD IL
2008-12-16 815-408-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E UTICA IL
2008-12-16 815-563-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J CEDARVILLE IL
2008-12-10 815-217-3XXX 3000–3999Assigned DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - IL 972C DE KALB IL
2008-12-09 815-677-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DIXON IL
2008-11-25 815-600-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 JOLIET IL
2008-11-25 815-600-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 JOLIET IL
2008-11-25 815-669-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MCHENRY IL
2008-11-25 815-676-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PLAINFIELD IL
2008-11-20 815-862-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RICHMOND IL
2008-11-14 815-200-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LA SALLE IL
2008-11-14 815-214-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E KANKAKEE IL
2008-11-14 815-246-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E EARLVILLE IL
2008-11-14 815-277-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E FRANKFORT IL
2008-11-14 815-290-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MINOOKA IL
2008-11-14 815-293-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LOCKPORT IL
2008-11-14 815-310-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E UTICA IL
2008-11-14 815-314-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MANHATTAN IL
2008-11-14 815-317-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CRESCENTCY IL
2008-11-14 815-416-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MORRIS IL
2008-11-14 815-450-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MOMENCE IL
2008-11-14 815-496-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SHERIDAN IL
2008-11-14 815-523-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J KANKAKEE IL
2008-11-14 815-556-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PLAINFIELD IL
2008-11-14 815-570-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SANDWICH IL
2008-11-14 815-575-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E WOODSTOCK IL
2008-11-14 815-596-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MARENGO IL
2008-11-14 815-617-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E OTTAWA IL
2008-11-14 815-627-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PAW PAW IL
2008-11-14 815-669-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E MCHENRY IL
2008-11-14 815-694-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CLIFTON IL
2008-11-14 815-714-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E JOLIET IL
2008-11-14 815-714-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E JOLIET IL
2008-11-14 815-797-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SOMONAUK IL
2008-11-14 815-893-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CRYSTAL LK IL
2008-11-14 815-916-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E PLATTVILLE IL
2008-11-11 815-641-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2008-11-10 815-981-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2008-11-04 815-202-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2008-11-04 815-202-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2008-10-21 815-388-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-10-21 815-388-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-10-21 815-388-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-10-21 815-401-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANKAKEE IL
2008-10-21 815-401-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANKAKEE 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.