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
2014-03-13 815-513-7XXX 7000–7999Assigned ONVOY, LLC 224C MORRIS IL
2014-03-03 815-491-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2014-03-03 815-491-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2014-03-03 815-491-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2014-03-03 815-491-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2014-03-03 815-491-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2014-02-19 815-414-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E EARLVILLE IL
2014-02-06 815-335-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 WINNEBAGO IL
2014-02-05 815-205-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COAL CITY IL
2014-01-30 815-687-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOODSTOCK IL
2014-01-30 815-701-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2014-01-30 815-923-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J UNION IL
2014-01-29 815-287-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VERONA IL
2014-01-29 815-408-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J UTICA IL
2014-01-29 815-427-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST ANNE IL
2014-01-29 815-475-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLATTVILLE IL
2014-01-29 815-769-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SENECA IL
2014-01-29 815-887-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARVARD IL
2014-01-28 815-290-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MINOOKA IL
2014-01-28 815-373-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELWOOD IL
2014-01-28 815-374-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DWIGHT IL
2014-01-28 815-418-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MANHATTAN IL
2014-01-28 815-426-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HERSCHER IL
2014-01-28 815-466-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANT PARK IL
2014-01-28 815-649-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GARDNER IL
2014-01-28 815-662-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOMENCE IL
2014-01-28 815-736-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LISBON IL
2014-01-28 815-783-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GILMAN IL
2014-01-28 815-792-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARDING IL
2014-01-23 815-458-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRAIDWOOD IL
2014-01-14 815-719-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PRINCETON IL
2014-01-13 815-265-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E GILMAN IL
2013-12-20 815-345-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK IL
2013-12-17 815-214-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 KANKAKEE IL
2013-12-13 815-981-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DE KALB IL
2013-11-27 815-705-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2013-11-27 815-705-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2013-11-25 815-239-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 PECATONICA IL
2013-11-25 815-865-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 DAVIS IL
2013-11-19 815-990-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 FREEPORT IL
2013-11-14 815-697-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E CHEBANSE IL
2013-11-12 815-414-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EARLVILLE IL
2013-11-07 815-888-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J ROCHELLE IL
2013-11-06 815-213-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J STERLING IL
2013-11-06 815-345-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2013-10-22 815-527-0XXX 0000–0999Assigned ONVOY, LLC 224C WOODSTOCK IL
2013-10-22 815-527-3XXX 3000–3999Assigned ONVOY, LLC 224C WOODSTOCK IL
2013-10-22 815-527-4XXX 4000–4999Assigned ONVOY, LLC 224C WOODSTOCK IL
2013-10-22 815-527-8XXX 8000–8999Assigned ONVOY, LLC 224C WOODSTOCK IL
2013-10-15 815-552-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J LOCKPORT 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.