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
2015-01-13 815-786-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SANDWICH IL
2014-12-17 815-652-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 GRANDDTOUR IL
2014-12-03 815-764-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-12-03 815-764-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-12-03 815-764-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-12-03 815-764-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-12-03 815-764-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-12-03 815-764-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-12-03 815-995-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-11-25 815-880-1XXX 1000–1999Assigned ONVOY, LLC 224C WOODSTOCK IL
2014-11-25 815-880-4XXX 4000–4999Assigned ONVOY, LLC 224C WOODSTOCK IL
2014-11-25 815-880-6XXX 6000–6999Assigned ONVOY, LLC 224C WOODSTOCK IL
2014-11-24 815-616-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FREEPORT IL
2014-11-24 815-618-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FREEPORT IL
2014-11-10 815-719-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRINCETON IL
2014-10-24 815-374-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DWIGHT IL
2014-10-22 815-821-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 FREEPORT IL
2014-10-20 815-517-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-10-20 815-517-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-10-20 815-517-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2014-10-16 815-618-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREEPORT IL
2014-10-08 815-710-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2014-10-08 815-710-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2014-10-03 815-329-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2014-10-02 815-242-4XXX 4000–4999Assigned ONVOY, LLC 224C MINOOKA IL
2014-10-02 815-242-5XXX 5000–5999Assigned ONVOY, LLC 224C MINOOKA IL
2014-10-02 815-329-0XXX 0000–0999Assigned METROPCS, INC. 5562 ROCKFORD IL
2014-09-30 815-880-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WOODSTOCK IL
2014-09-25 815-662-0XXX 0000–0999Assigned ONVOY, LLC 224C MOMENCE IL
2014-09-25 815-662-1XXX 1000–1999Assigned ONVOY, LLC 224C MOMENCE IL
2014-09-24 815-905-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LOCKPORT IL
2014-09-16 815-615-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 MENDOTA IL
2014-09-15 815-585-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MORRIS IL
2014-09-09 815-995-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DE KALB IL
2014-09-05 815-780-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E LA SALLE IL
2014-09-04 815-923-0XXX 0000–0999Assigned ONVOY, LLC 224C UNION IL
2014-09-04 815-923-5XXX 5000–5999Assigned ONVOY, LLC 224C UNION IL
2014-09-03 815-408-2XXX 2000–2999Assigned ONVOY, LLC 224C UTICA IL
2014-09-03 815-408-3XXX 3000–3999Assigned ONVOY, LLC 224C UTICA IL
2014-09-03 815-940-0XXX 0000–0999Assigned ONVOY, LLC 224C GARDNER IL
2014-09-03 815-940-1XXX 1000–1999Assigned ONVOY, LLC 224C GARDNER IL
2014-08-27 815-293-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K LOCKPORT IL
2014-08-27 815-372-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K LOCKPORT IL
2014-08-27 815-407-2XXX 2000–2999Assigned FIRST COMMUNICATIONS, LLC 460K LOCKPORT IL
2014-08-27 815-605-7XXX 7000–7999Assigned ONVOY, LLC 224C GRANT PARK IL
2014-08-27 815-605-8XXX 8000–8999Assigned ONVOY, LLC 224C GRANT PARK IL
2014-08-27 815-680-0XXX 0000–0999Assigned ONVOY, LLC 224C MANHATTAN IL
2014-08-27 815-680-1XXX 1000–1999Assigned ONVOY, LLC 224C MANHATTAN IL
2014-08-22 815-581-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E SPRING GRV IL
2014-08-21 815-373-6XXX 6000–6999Assigned ONVOY, LLC 224C ELWOOD 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.