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
2020-11-13 815-435-1XXX 1000–1999Assigned STRATUS NETWORKS 495J BEAVERVL IL
2020-11-13 815-604-1XXX 1000–1999Assigned STRATUS NETWORKS 495J BELVIDERE IL
2020-10-14 815-947-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 STOCKTON IL
2020-09-18 815-503-6XXX 6000–6999Assigned METROPCS, INC. 5562 MENDOTA IL
2020-09-15 815-283-9XXX 9000–9999Assigned STRATUS NETWORKS 495J WATERMAN IL
2020-09-15 815-396-1XXX 1000–1999Assigned STRATUS NETWORKS 495J STEWARD IL
2020-09-15 815-453-1XXX 1000–1999Assigned STRATUS NETWORKS 495J ASHTON IL
2020-09-15 815-559-9XXX 9000–9999Assigned STRATUS NETWORKS 495J CHENOA IL
2020-09-15 815-567-4XXX 4000–4999Assigned STRATUS NETWORKS 495J CAMPUS IL
2020-09-15 815-571-1XXX 1000–1999Assigned STRATUS NETWORKS 495J SHANNON IL
2020-09-15 815-576-1XXX 1000–1999Assigned STRATUS NETWORKS 495J POLO IL
2020-09-15 815-595-1XXX 1000–1999Assigned STRATUS NETWORKS 495J OREGON IL
2020-09-15 815-629-0XXX 0000–0999Assigned STRATUS NETWORKS 495J SHIRLAND IL
2020-09-15 815-688-5XXX 5000–5999Assigned STRATUS NETWORKS 495J STRAWN IL
2020-09-15 815-702-3XXX 3000–3999Assigned STRATUS NETWORKS 495J SAUNEMIN IL
2020-09-15 815-784-0XXX 0000–0999Assigned STRATUS NETWORKS 495J GENOA IL
2020-09-15 815-849-2XXX 2000–2999Assigned STRATUS NETWORKS 495J SUBLETTE IL
2020-09-15 815-855-0XXX 0000–0999Assigned STRATUS NETWORKS 495J MILLEDGEVL IL
2020-09-15 815-857-1XXX 1000–1999Assigned STRATUS NETWORKS 495J AMBOY IL
2020-09-15 815-892-1XXX 1000–1999Assigned STRATUS NETWORKS 495J STILMANVLY IL
2020-09-15 815-913-8XXX 8000–8999Assigned STRATUS NETWORKS 495J CHADWICK IL
2020-09-15 815-934-1XXX 1000–1999Assigned STRATUS NETWORKS 495J EMINGTON IL
2020-09-15 815-949-3XXX 3000–3999Assigned STRATUS NETWORKS 495J CABERY IL
2020-09-15 815-982-8XXX 8000–8999Assigned STRATUS NETWORKS 495J TAMPICO IL
2020-09-15 815-998-6XXX 6000–6999Assigned STRATUS NETWORKS 495J ODELL IL
2020-09-14 815-916-1XXX 1000–1999Assigned STRATUS NETWORKS 495J PLATTVILLE IL
2020-09-08 815-591-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HANOVER IL
2020-09-08 815-594-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APPLERIVER IL
2020-09-04 815-918-2XXX 2000–2999Assigned STRATUS NETWORKS 495J CLIFTON IL
2020-09-03 815-930-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IL 6265 ELIZABETH IL
2020-09-03 815-957-8XXX 8000–8999Assigned STRATUS NETWORKS 495J ROCKTON IL
2020-08-31 815-357-0XXX 0000–0999Assigned STRATUS NETWORKS 495J SENECA IL
2020-08-31 815-691-9XXX 9000–9999Assigned STRATUS NETWORKS 495J UTICA IL
2020-08-30 815-306-9XXX 9000–9999Assigned STRATUS NETWORKS 495J LOCKPORT IL
2020-08-30 815-478-8XXX 8000–8999Assigned STRATUS NETWORKS 495J MANHATTAN IL
2020-08-30 815-568-9XXX 9000–9999Assigned STRATUS NETWORKS 495J MARENGO IL
2020-08-30 815-617-0XXX 0000–0999Assigned STRATUS NETWORKS 495J OTTAWA IL
2020-08-30 815-620-1XXX 1000–1999Assigned STRATUS NETWORKS 495J MINOOKA IL
2020-08-30 815-658-1XXX 1000–1999Assigned STRATUS NETWORKS 495J NEWARK IL
2020-08-30 815-662-9XXX 9000–9999Assigned STRATUS NETWORKS 495J MOMENCE IL
2020-08-29 815-237-1XXX 1000–1999Assigned STRATUS NETWORKS 495J GARDNER IL
2020-08-29 815-265-0XXX 0000–0999Assigned STRATUS NETWORKS 495J GILMAN IL
2020-08-29 815-465-9XXX 9000–9999Assigned STRATUS NETWORKS 495J GRANT PARK IL
2020-08-29 815-760-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BUREAU IL
2020-08-29 815-860-9XXX 9000–9999Assigned STRATUS NETWORKS 495J ELWOOD IL
2020-08-29 815-887-4XXX 4000–4999Assigned STRATUS NETWORKS 495J HARVARD IL
2020-08-26 815-372-8XXX 8000–8999Assigned METROPCS, INC. 5562 LOCKPORT IL
2020-08-25 815-317-9XXX 9000–9999Assigned STRATUS NETWORKS 495J CRESCENTCY IL
2020-08-25 815-473-9XXX 9000–9999Assigned STRATUS NETWORKS 495J WOODLAND IL
2020-08-25 815-655-0XXX 0000–0999Assigned STRATUS NETWORKS 495J COAL CITY 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.