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
2008-10-21 815-528-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-10-21 815-528-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-10-21 815-528-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-10-21 815-528-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-10-21 815-528-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-10-21 815-573-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANKAKEE IL
2008-10-21 815-573-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANKAKEE IL
2008-10-21 815-573-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANKAKEE IL
2008-10-14 815-661-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2008-10-14 815-661-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2008-09-26 815-573-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2008-09-16 815-290-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 MINOOKA IL
2008-09-15 815-641-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2008-09-15 815-687-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK IL
2008-09-08 815-293-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J LOCKPORT IL
2008-09-08 815-677-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DIXON IL
2008-09-08 815-901-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DE KALB IL
2008-09-08 815-990-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 FREEPORT IL
2008-08-26 815-701-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2008-08-22 815-992-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STREATOR IL
2008-08-21 815-307-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCHENRY IL
2008-08-20 815-231-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J ROCKFORD IL
2008-08-20 815-345-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK IL
2008-08-20 815-981-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2008-08-19 815-261-8XXX 8000–8999Assigned METROPCS, INC. 5562 CRYSTAL LK IL
2008-08-19 815-528-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J MCHENRY IL
2008-08-19 815-596-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J MARENGO IL
2008-08-08 815-707-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 GILMAN IL
2008-08-07 815-585-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2008-08-07 815-875-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRINCETON IL
2008-08-06 815-391-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2008-08-06 815-391-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2008-08-06 815-391-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ROCKFORD IL
2008-08-04 815-887-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J HARVARD IL
2008-07-31 815-701-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2008-07-29 815-388-8XXX 8000–8999Assigned ONVOY, LLC 224C MCHENRY IL
2008-07-15 815-977-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROCKFORD IL
2008-07-15 815-977-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROCKFORD IL
2008-07-08 815-322-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MCHENRY IL
2008-07-03 815-200-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 LA SALLE IL
2008-07-03 815-202-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OGLESBY IL
2008-07-03 815-701-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK IL
2008-06-25 815-977-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROCKFORD IL
2008-06-25 815-977-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ROCKFORD IL
2008-06-25 815-977-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ROCKFORD IL
2008-06-12 815-317-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CRESCENTCY IL
2008-06-10 815-733-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PLAINFIELD IL
2008-06-05 815-901-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DE KALB IL
2008-06-04 815-585-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2008-06-03 815-614-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KANKAKEE 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.