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
2021-03-03 815-620-4XXX 4000–4999Assigned ONVOY, LLC 224C MINOOKA IL
2021-03-03 815-620-5XXX 5000–5999Assigned ONVOY, LLC 224C MINOOKA IL
2021-03-03 815-620-6XXX 6000–6999Assigned ONVOY, LLC 224C MINOOKA IL
2021-03-03 815-620-7XXX 7000–7999Assigned ONVOY, LLC 224C MINOOKA IL
2021-03-03 815-647-2XXX 2000–2999Assigned STRATUS NETWORKS 495J CULLOM IL
2021-03-03 815-665-4XXX 4000–4999Assigned ONVOY, LLC 224C OTTAWA IL
2021-03-03 815-665-5XXX 5000–5999Assigned ONVOY, LLC 224C OTTAWA IL
2021-03-03 815-665-6XXX 6000–6999Assigned ONVOY, LLC 224C OTTAWA IL
2021-03-03 815-665-7XXX 7000–7999Assigned ONVOY, LLC 224C OTTAWA IL
2021-03-03 815-686-6XXX 6000–6999Assigned STRATUS NETWORKS 495J PIPER CITY IL
2021-03-02 815-424-6XXX 6000–6999Assigned ONVOY, LLC 224C ELWOOD IL
2021-03-02 815-446-2XXX 2000–2999Assigned ONVOY, LLC 224C CEDARPOINT IL
2021-03-02 815-472-5XXX 5000–5999Assigned ONVOY, LLC 224C MOMENCE IL
2021-03-02 815-475-8XXX 8000–8999Assigned ONVOY, LLC 224C PLATTVILLE IL
2021-03-02 815-515-6XXX 6000–6999Assigned ONVOY, LLC 224C WATSEKA IL
2021-03-02 815-515-7XXX 7000–7999Assigned ONVOY, LLC 224C WATSEKA IL
2021-03-02 815-655-7XXX 7000–7999Assigned ONVOY, LLC 224C COAL CITY IL
2021-03-02 815-655-8XXX 8000–8999Assigned ONVOY, LLC 224C COAL CITY IL
2021-03-02 815-667-8XXX 8000–8999Assigned ONVOY, LLC 224C UTICA IL
2021-03-02 815-682-5XXX 5000–5999Assigned ONVOY, LLC 224C STOCKLAND IL
2021-03-02 815-771-1XXX 1000–1999Assigned ONVOY, LLC 224C ASHKUM IL
2021-03-02 815-781-1XXX 1000–1999Assigned ONVOY, LLC 224C CHEBANSE IL
2021-03-02 815-826-6XXX 6000–6999Assigned ONVOY, LLC 224C SOMONAUK IL
2021-03-02 815-826-7XXX 7000–7999Assigned ONVOY, LLC 224C SOMONAUK IL
2021-03-02 815-884-8XXX 8000–8999Assigned ONVOY, LLC 224C EARLVILLE IL
2021-03-02 815-918-7XXX 7000–7999Assigned ONVOY, LLC 224C CLIFTON IL
2021-03-02 815-944-6XXX 6000–6999Assigned ONVOY, LLC 224C MOMENCE IL
2021-03-02 815-984-9XXX 9000–9999Assigned ONVOY, LLC 224C WELLINGTON IL
2021-02-18 815-615-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MENDOTA IL
2021-01-30 815-492-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 APPLERIVER IL
2021-01-30 815-591-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HANOVER IL
2021-01-30 815-620-8XXX 8000–8999Assigned TELNYX LLC 073H MINOOKA IL
2021-01-30 815-655-1XXX 1000–1999Assigned TELNYX LLC 073H COAL CITY IL
2021-01-30 815-845-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 SCALESMOND IL
2021-01-30 815-909-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2021-01-30 815-909-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2021-01-20 815-869-5XXX 5000–5999Assigned STRATUS NETWORKS 495J MAGNOLIA IL
2020-12-18 815-424-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J ELWOOD IL
2020-12-18 815-431-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J OTTAWA IL
2020-12-18 815-588-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J LOCKPORT IL
2020-12-17 815-710-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J MORRIS IL
2020-12-15 815-597-3XXX 3000–3999Assigned STRATUS NETWORKS 495J GARDENPRRI IL
2020-12-15 815-800-9XXX 9000–9999Assigned STRATUS NETWORKS 495J POPLAR GRV IL
2020-12-07 815-372-5XXX 5000–5999Assigned METROPCS, INC. 5562 LOCKPORT IL
2020-11-24 815-362-5XXX 5000–5999Assigned ONVOY, LLC 224C GERMAN VLY IL
2020-11-24 815-362-6XXX 6000–6999Assigned ONVOY, LLC 224C GERMAN VLY IL
2020-11-23 815-554-1XXX 1000–1999Assigned STRATUS NETWORKS 495J E DUBUQUE IL
2020-11-23 815-859-1XXX 1000–1999Assigned STRATUS NETWORKS 495J ROCHELLE IL
2020-11-23 815-989-1XXX 1000–1999Assigned STRATUS NETWORKS 495J PROPHETSTN IL
2020-11-19 815-970-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SYCAMORE 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.