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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2022-01-31 815-554-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 E DUBUQUE IL
2022-01-31 815-855-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MILLEDGEVL IL
2022-01-31 815-897-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 LYNDON IL
2022-01-31 815-913-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHADWICK IL
2022-01-26 815-785-6XXX 6000–6999Assigned COMMIO, LLC 939H WATSEKA IL
2022-01-18 815-755-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SENECA IL
2022-01-08 815-605-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GRANT PARK IL
2022-01-06 815-246-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E EARLVILLE IL
2022-01-06 815-613-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DIXON IL
2022-01-06 815-613-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DIXON IL
2021-12-30 815-588-9XXX 9000–9999Assigned METROPCS, INC. 5562 LOCKPORT IL
2021-12-28 815-927-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H JOLIET IL
2021-12-17 815-375-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H DE KALB IL
2021-12-17 815-375-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H DE KALB IL
2021-12-17 815-901-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H DE KALB IL
2021-12-15 815-443-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 PEARL CITY IL
2021-12-15 815-554-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 E DUBUQUE IL
2021-12-15 815-565-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SAVANNA IL
2021-12-15 815-865-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 DAVIS IL
2021-12-15 815-974-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 HEBRON IL
2021-12-14 815-864-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SHANNON IL
2021-12-13 815-208-0XXX 0000–0999Assigned METROPCS, INC. 5562 FULTON IL
2021-12-13 815-208-3XXX 3000–3999Assigned METROPCS, INC. 5562 FULTON IL
2021-12-13 815-208-4XXX 4000–4999Assigned METROPCS, INC. 5562 FULTON IL
2021-12-13 815-208-5XXX 5000–5999Assigned METROPCS, INC. 5562 FULTON IL
2021-12-03 815-305-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GARDNER IL
2021-11-29 815-515-5XXX 5000–5999Assigned PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E WATSEKA IL
2021-11-20 815-974-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E HEBRON IL
2021-11-18 815-449-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H DAKOTA IL
2021-11-18 815-492-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H APPLERIVER IL
2021-11-18 815-563-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CEDARVILLE IL
2021-11-18 815-865-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H DAVIS IL
2021-11-18 815-930-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H ELIZABETH IL
2021-11-16 815-649-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GARDNER IL
2021-11-04 815-264-5XXX 5000–5999Assigned ONVOY, LLC 224C WATERMAN IL
2021-10-21 815-858-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ELIZABETH IL
2021-10-20 815-364-7XXX 7000–7999Assigned ONVOY, LLC 224C MORRIS IL
2021-10-20 815-364-8XXX 8000–8999Assigned ONVOY, LLC 224C MORRIS IL
2021-10-20 815-364-9XXX 9000–9999Assigned ONVOY, LLC 224C MORRIS IL
2021-10-20 815-407-9XXX 9000–9999Assigned ONVOY, LLC 224C LOCKPORT IL
2021-10-20 815-524-0XXX 0000–0999Assigned ONVOY, LLC 224C LOCKPORT IL
2021-10-20 815-694-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CLIFTON IL
2021-10-20 815-694-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CLIFTON IL
2021-10-20 815-697-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CHEBANSE IL
2021-10-20 815-697-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHEBANSE IL
2021-10-20 815-771-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H ASHKUM IL
2021-10-20 815-771-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H ASHKUM IL
2021-10-20 815-799-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MANLIUS IL
2021-10-20 815-799-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H MANLIUS IL
2021-10-20 815-834-7XXX 7000–7999Assigned ONVOY, LLC 224C LOCKPORT 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.