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
2008-05-22 815-733-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PLAINFIELD IL
2008-05-16 815-453-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ASHTON IL
2008-05-16 815-456-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FRANKLIGRV IL
2008-05-16 815-857-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J AMBOY IL
2008-05-16 815-938-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J FORRESTON IL
2008-05-09 815-641-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2008-05-01 815-676-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PLAINFIELD IL
2008-04-30 815-788-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CRYSTAL LK IL
2008-04-16 815-215-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 NEW LENOX IL
2008-04-14 815-534-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K FRANKFORT IL
2008-04-08 815-641-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2008-04-07 815-319-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2008-04-01 815-980-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD IL
2008-03-24 815-217-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 DE KALB IL
2008-03-20 815-277-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J FRANKFORT IL
2008-03-20 815-717-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J NEW LENOX IL
2008-03-18 815-981-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2008-03-11 815-319-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ROCKFORD IL
2008-03-07 815-290-7XXX 7000–7999Assigned ILLINOIS BELL TEL CO 9329 MINOOKA IL
2008-03-05 815-384-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CRESTON IL
2008-02-28 815-517-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2008-02-05 815-214-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2008-02-05 815-503-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MENDOTA IL
2008-02-04 815-268-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 ONARGA IL
2008-01-30 815-614-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2008-01-23 815-641-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 JOLIET IL
2008-01-16 815-679-7XXX 7000–7999Assigned METROPCS, INC. 5562 MCHENRY IL
2008-01-10 815-419-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PONTIAC IL
2008-01-10 815-616-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FREEPORT IL
2008-01-10 815-677-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DIXON IL
2008-01-10 815-901-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DE KALB IL
2008-01-09 815-992-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 STREATOR IL
2008-01-07 815-584-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DWIGHT IL
2008-01-04 815-508-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DE KALB IL
2007-12-28 815-402-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GALENA IL
2007-12-20 815-418-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J MANHATTAN IL
2007-12-17 815-991-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SYCAMORE IL
2007-12-13 815-219-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CRYSTAL LK IL
2007-12-07 815-579-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LA SALLE IL
2007-12-04 815-585-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2007-12-03 815-587-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 OTTAWA IL
2007-11-16 815-290-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J MINOOKA IL
2007-11-16 815-683-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CRESCENTCY IL
2007-11-16 815-708-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD IL
2007-11-13 815-321-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK IL
2007-11-08 815-314-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K MANHATTAN IL
2007-11-08 815-514-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 JOLIET IL
2007-11-08 815-802-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K KANKAKEE IL
2007-11-08 815-944-3XXX 3000–3999Assigned FIRST COMMUNICATIONS, LLC 460K MOMENCE IL
2007-10-25 815-701-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 WOODSTOCK 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.