NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 618
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 2
AHOI LLC 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
2008-03-11 618-250-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2008-03-11 618-250-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2008-03-11 618-250-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2008-03-11 618-250-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2008-03-11 618-250-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2008-03-11 618-250-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2008-03-11 618-250-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2008-03-11 618-250-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2008-03-03 618-509-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2008-03-03 618-509-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2008-02-28 618-731-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MT VERNON IL
2008-02-20 618-882-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K HIGHLAND IL
2008-02-20 618-887-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MARINE IL
2008-02-19 618-917-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WOOD RIVER IL
2008-02-18 618-383-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CARMI IL
2008-02-15 618-579-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2008-02-01 618-579-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MARION IL
2008-02-01 618-579-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MARION IL
2008-02-01 618-946-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JERSEYVL IL
2008-01-24 618-759-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VIENNA IL
2008-01-17 618-579-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MARION IL
2008-01-17 618-651-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 HIGHLAND IL
2008-01-14 618-240-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT CARMEL IL
2008-01-14 618-731-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT VERNON IL
2008-01-11 618-589-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 O FALLON IL
2007-12-17 618-731-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MT VERNON IL
2007-12-13 618-365-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2007-12-07 618-206-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 O FALLON IL
2007-12-07 618-212-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 BELLEVILLE IL
2007-12-07 618-364-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 MARION IL
2007-12-07 618-433-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 ALTON IL
2007-12-07 618-709-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 GRANITE CY IL
2007-12-07 618-857-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 E ST LOUIS IL
2007-12-06 618-251-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 WOOD RIVER IL
2007-12-04 618-248-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ALBERS IL
2007-11-29 618-606-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 COLLINSVL IL
2007-11-27 618-895-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAYNE CITY IL
2007-11-21 618-663-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BENTON IL
2007-11-19 618-476-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MILLSTADT IL
2007-11-19 618-538-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WESTVIEW IL
2007-11-13 618-708-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SPARTA IL
2007-11-09 618-943-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWRENCEVL IL
2007-11-08 618-740-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 SALEM IL
2007-11-05 618-917-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WOOD RIVER IL
2007-10-31 618-709-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2007-10-25 618-571-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PINCKNEYVL IL
2007-10-17 618-364-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2007-10-17 618-663-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BENTON IL
2007-10-15 618-717-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 BETHALTO IL
2007-10-04 618-861-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CHESTER 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.